Black Box TV Converter Box A S 4 User Manual

AUGUST 1989  
PC001  
PC006  
Protocol Converter  
Model A/S-4  
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)  
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746  
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
CUSTOMER  
SUPPORT  
INFORMATION  
 
PROTOCOL CONVERTER MODEL A/S-4  
INSTRUCCIONES DE SEGURIDAD (Normas Oficiales Mexicanas Electrical Safety Statement)  
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado.  
2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.  
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas.  
4. Todas las instrucciones de operación y uso deben ser seguidas.  
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de la tina de baño, lavabo, sótano  
mojado o cerca de una alberca, etc..  
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante.  
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante.  
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de  
operación. Todo otro servicio deberá ser referido a personal de servicio calificado.  
9. El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso. La colocación del aparato  
eléctrico sobre una cama, sofá, alfombra o superficie similar puede bloquea la ventilación, no se debe colocar en  
libreros o gabinetes que impidan el flujo de aire por los orificios de ventilación.  
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas  
u otros aparatos (incluyendo amplificadores) que producen calor.  
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de  
operación, o como se indique en el aparato.  
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.  
13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos  
colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.  
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante.  
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.  
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo.  
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de  
ventilación.  
18. Servicio por personal calificado deberá ser provisto cuando:  
A: El cable de poder o el contacto ha sido dañado; u  
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o  
C: El aparato ha sido expuesto a la lluvia; o  
D: El aparato parece no operar normalmente o muestra un cambio en su desempeño; o  
E: El aparato ha sido tirado o su cubierta ha sido dañada.  
2
 
TRADEMARKS  
TRADEMARKS USED IN THIS MANUAL  
Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.  
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PROTOCOL CONVERTER MODEL A/S-4  
Contents  
Chapter  
Page  
1. General Information ................................................................................................................................6  
2. A/S-4 Specifications ..................................................................................................................................8  
3. Installation ................................................................................................................................................9  
3.1 General Installation..........................................................................................................................9  
3.2 Modem Interface..............................................................................................................................9  
3.3 Terminal Automatic Speed Detection ............................................................................................9  
3.4 Power Transformer ........................................................................................................................10  
3.5 Synchronizer. ..................................................................................................................................10  
4. Switches ..................................................................................................................................................11  
4.1 Terminal Switches...........................................................................................................................11  
4.2 How to Set Terminal Switches for Different Devices ..................................................................14  
4.3 Modem Switches.............................................................................................................................15  
4.4 How to Set Modem Switches for Different Devices......................................................................17  
4.5 Option Switches..............................................................................................................................18  
5. LED Indicators ........................................................................................................................................19  
6. Power Up and Configuration Operations ............................................................................................20  
6.1 Power Up ........................................................................................................................................20  
6.2 Power Up Message..........................................................................................................................21  
6.3 A/S-4 Main Menu ..........................................................................................................................22  
6.4 Switching from A/S-4’s Main Menu to Running the Application ..............................................23  
6.5 Changing the VDU Type. ..............................................................................................................25  
6.6 Changing VDU Commands for VDU Type Selected....................................................................27  
6.7 Changing Video Attributes and Commands for VDU ................................................................28  
6.8 Changing Keyboard Layout Type..................................................................................................35  
6.9 Changing Key Arrangements on a Particular Keyboard Layout Type ....................................36  
6.9.1 PF Keys.................................................................................................................................37  
6.9.2 PA Keys.................................................................................................................................38  
6.9.3 Command Keys. ..................................................................................................................38  
6.9.4 IBM Keys ..............................................................................................................................39  
6.9.5 A/S-4 Keys. ..........................................................................................................................39  
6.10 Changing Application................................................................................................................41  
6.11 Changing Application Options ................................................................................................41  
6.11.1 For Interactive. ..................................................................................................................42  
6.11.2 For Batch. ..........................................................................................................................44  
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CONTENTS  
Chapter  
Page  
6.12 Printer Options ..........................................................................................................................45  
6.13 Verify Switch Settings ................................................................................................................49  
6.14 Reload Default Options ............................................................................................................50  
7. Interactive Operation..............................................................................................................................51  
8. Batch Operation. ....................................................................................................................................52  
8.1 Receiving Batch Data From the SNA Host. ..............................................................................53  
8.2 Transmitting Batch Data to the SNA Host ................................................................................55  
8.3 Batch Printer Operation ............................................................................................................56  
8.4 Batch Default Options. ..............................................................................................................58  
9. Battery RAM ............................................................................................................................................63  
10. Maintenance..........................................................................................................................................64  
11. Software Upgrade and Eprom Replacement ......................................................................................65  
12. System/Line GEN for Batch ................................................................................................................66  
13. Troubleshooting Problems and Odd Installation Problems...............................................................74  
Appendix A: 3274 SNA Communications Operations...............................................................................76  
Appendix B: General 3770 SNA Communication Operations..................................................................78  
Appendix C: Conversion Charts..................................................................................................................80  
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PROTOCOL CONVERTER MODEL A/S-4  
1. General Information  
THE A/S-4 is an SNA protocol converter. It is capable of a wide variety of conversions and adaptation  
tasks. Listed below are just a few of the tasks the A/S-4 was designed to perform:  
• Bit-oriented protocol, SDLC  
• Byte-oriented protocol, ASCII  
• Serial Data Transfer and Conversion  
• Screen Emulation of various CRTs  
• Storage of prompting commands  
• Protocol conversions  
• Character conversions  
• Communication conversions  
The A/S-4 is also designed to be easily installed and operated. The A/S-4 hardware consists of the  
following components:  
• 16K of available Static Random Access Memory (RAM) and 32K Non-volatile Erasable  
Programmable Read Only Memory (EPROM).  
• Two (2) Input-Output (I/O) Serial interface ports capable of the following operations:  
- async, byte sync, or bit sync  
- half or full duplex  
- up to 19.2 bit per second data transfer  
- automatic CRC generation and checking (CRC-16 or CCITT-16)  
- 8 bit address recognition  
- automatic zero bit insertion and deletion  
- Data Terminal Equipment (DTE) or Data Communication  
- Equipment (DCE) operations  
- NRZI, TDI or RS232C  
• Power, Data Send/Receive, and signal visual LED Indicators  
• 6809 Microprocessor control  
• 6 switch banks for changing RS232, NRZI, and TDI pin assignments of the serial ports  
• 2 switch banks for option selections.  
6
 
CHAPTER 1:General Information  
The A/S-4 is a 3274 work-alike controller emulating a PU2 with one LU2 terminal and one LU1 or LU3  
printer. This allows an ASCII terminal or micro computer to emulate a 3278 CRT with a 3278 printer.  
The A/S-4 will also emulate SNA/SDLC 3776 or 3777 work station with one LU1 console, printer, card  
reader, card punch, or disk. It should be noted here that for purposes of simplicity this manual refers to  
CRTs and PCs with the generic acronym VDU: Visual Display Unit.  
Either port may be configured as data terminal equipment (DTE) or data communications equipment  
(DCE). This gives the system designer great flexibility in determining what type devices he will use and  
where the A/S-4 can be installed.  
The A/S-4 is designed to ease installation by the end user. Most of A/S-4’s operating parameters  
(address, baud rate, ID, word structure, video display type) are “SOFT. They may be changed from the  
keyboard using “Friendly” menus to step you through the set up procedure. Once programmed, the  
A/S-4 retains its settings in non-volatile memory until changed by the user.  
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PROTOCOL CONVERTER MODEL A/S-4  
2. Specifications  
Standard and Nonstandard Baud Rates: 50, 75, 110, 134, 150, 300, 600, 1200, 1800, 2000, 2400, 3600,  
4800, 7200, 9600, 19.2 kbps  
Connectors: All ports: DB25 (25-pin female)  
Indicators:  
Power  
Terminal Transmit Data  
Terminal Receive Data  
Terminal Carrier Detect  
Terminal Clear-to-Send  
Modem Transmit Data  
Modem Receive Data  
Modem Carrier DetectModem Clear-To-Send  
Error  
Environmental: Operating Temperature: 32 to 122°F (0 to 50°C); Storage Temperature: -13 to +158°F  
(-25 to +70°C)  
Humidity: Up to 95% relative humidity without condensation  
Power: 99–130 VAC or 200–230 VAC with a special order transformer 50 or 60 Hz. with 5% tolerance  
Less than 10 watts of power consumption  
Size: 1.5"H x 6.5"W x 8.25"D (3.8 x 15.2 x 21 cm)  
Weight: 3 lb. (1.36 kg), includes frame and cover  
8
 
CHAPTER 3: Installation  
3. Installation  
3.1General Installation  
The A/S-4’s options are set by the operator through the use of menus and switches. The A/S-4 provides  
a very flexible package of options so as to work with any terminal or terminal emulating device (such as a  
personal computer). Due to the great numbers of options provided, it may take a little time to set up  
the A/S-4 unit, however once complete, the options need not be set up again. All options are battery  
protected for when the unit is turned off.  
The A/S-4 uses external switches and easy to use menu driven Set up features.  
The A/S-4 is shipped from the factory ready to run with no changes if a DTE device (VDU, Personal  
Computer, etc.) is attached to the A/S-4’s terminal port and the A/S-4’s modem port is connected to a  
synchronous modem for dial up SDLC. If this is not your application, only a few switches need be  
changed. Refer to Section 4.0 for switch settings of other devices.  
To install the A/S-4:  
1. Connect cables to devices.  
2. Plug in the A/S-4.  
3. Type “S” on VDU for automatic speed detection of 300, 1200, 1800, 2400, 4800, or 9600 baud  
to obtain A/S-4 menus.  
4. Follow A/S-4’s menus.  
If you have an odd baud rate not listed, refer to Section 4.0 for setting switches for terminal baud rate. If  
the menus do not appear, refer to Section 13.0 for trouble shooting problems and odd installations.  
3.2 Modem Interface  
The modem port can be configured for several types of hardware communications. The A/S-4 is  
shipped with the options set for the RS232C EIA standard. The modem port can be configured for  
NRZI for some IBM installations by setting the switch on the rear of the A/S-4 unit to the NRZI position.  
3.3 Terminal Automatic Speed Detection  
The A/S-4 has the necessary hardware and software for speed detection on the terminal port. This  
option makes it possible to install a A/S-4 without changing a switch. Baud rates of 300, 1200, 1800,  
2400, 4800, or 9600 can be detected on power up of the unit. After applying power, the operator types  
“S” or SNA on the terminal and the baud rate of the VDU is detected and a power up message is sent to  
the terminal. The “S” may be in lower or upper case, even, odd, or no parity. Switch 5 of switch bank S9  
must be OFF to enable this feature to work properly. The A/S-4 is shipped with this feature ready to  
work.  
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PROTOCOL CONVERTER MODEL A/S-4  
3.4 Power Transformer  
The A/S-4 is shipped with a transformer for the standard USA 110-VAC outlet plug. A substitute  
transformer may be ordered for the for 220 VAC or other voltages. A conversion plug for different  
power outlets is the responsibility of the purchaser.  
3.5 Synchronizer  
The A/S-4 has a unique feature on the modem port to allow the A/S-4 to run SDLC over asynchronous  
modems, therefore providing a low cost dial up system. This is possible by the use of a hardware  
synchronizer circuit that derives clocks from the data. To use this feature, set the modem port switches  
as listed in Section 4.0 for an Asynchronous Modem.  
10  
 
CHAPTER 4: Switches  
4. Switches  
The A/S-4 is equipped with 8 banks of DIP switches, all of which are accessed from the bottom of the  
unit. The general functions of these switches are as follows:  
Terminal Interface Configuration  
Terminal Speed  
SW2, SW3, SW6  
SW6  
Modem Interface Configuration  
Terminal Data Formats & Options  
Special Printer Interface  
SW4, SW5, SW7  
SW9  
SW8  
NOTE  
When any switches are changed, the A/S-4 must be powered off and on for the new  
switch settings to take effect.  
4.1 Terminal Switches  
Terminal port switches for Female DB25 Terminal Connector  
Switch Bank S2, Switch:  
1-On connects pin 4 of connector to A/S-4’s input of  
CLEAR-TO-SEND  
2-On connects pin 5 of connector to A/S-4’s input of  
CLEAR-TO-SEND, for attaching DCE device  
3-On connects pin 11 of connector A/S-4’s input of  
CLEAR-TO-SEND, for printers with busy on pin 11  
4-On connects pin 19 of connector to A/S-4’s input of  
CLEAR-TO-SEND, for printers with busy on pin 19  
5-On connects pin 20 of connector to A/S-4’s input of  
CLEAR-TO-SEND, for devices with busy on pin 20  
6-On connects pin 6 of connector to A/S-4’s input of  
CARRIER DETECT  
7-On connects pin 8 of connector to A/S-4’s input of  
CARRIER DETECT  
8-On connects pin 15 of connector to A/S-4’s input of  
TRANSMIT CLOCK for Synchronous operation  
11  
 
PROTOCOL CONVERTER MODEL A/S-4  
Switch Bank S3, Switch:  
1-On connects pin 2 of connector to A/S-4’s output of  
Transmit Data, for attaching DCE devices  
2-On connects pin 3 of connector to A/S-4’s output of  
Transmit Data, for attaching DTE devices  
3-On connects pin 2 of connector to A/S-4’s input of  
Receive Data, for attaching DTE devices  
4-On connects pin 3 of connector to A/S-4’s input of  
Receive Data, for attaching DCE devices  
5-On connects pin 4 of connector to A/S-4’s output of  
REQUEST-TO-SEND, for attaching DCE devices  
6-On connects pin 5 of connector to A/S-4’s output of  
REQUEST-TO-SEND  
7-On connects A/S-4’s REQUEST-TO-SEND to A/S-4’s  
CLEAR-TO-SEND so that no external signals are needed.  
Used for Burroughs TDI and non-hardware throttle devices  
8-On connects pins 4 and 5 of connector so external devices  
throttle itself  
Switch Bank S6, Switch:  
1-On supplies internal clocking for A/S-4’s input of  
Transmit Clock  
2-On connects pin 17 of connector to A/S-4’s input of  
Receive Clock, for synchronous operation  
3-On supplies internal clocking for A/S-4’s input of  
Receive Clock  
4-On connects pin 20 of connector to A/S-4’s output of  
DATA-TERMINAL-READY, for attaching DCE devices  
5-On connects pin 20 of connector to A/S-4’s input of  
CARRIER DETECT  
6-For modem port, see Modem Switches  
7, 8, 9 and 10 - Set up terminal baud rate, if speed detection is turned off.  
12  
 
CHAPTER 4: Switches  
7
8
9
10  
BAUD RATE  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
50  
ON  
OFF  
ON  
75  
OFF  
OFF  
110  
134.5  
OFF  
ON  
ON  
ON  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
150  
300  
600  
1200  
ON  
OFF  
ON  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
ON  
ON  
ON  
ON  
1800  
2000  
2400  
3600  
ON  
OFF  
ON  
OFF  
OFF  
OFF  
OF  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
4800  
7200  
9600  
19.2K  
OFF  
OFF  
OFF  
ON  
OFF  
ON  
OFF  
OFF  
OFF  
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PROTOCOL CONVERTER MODEL A/S-4  
4.2 How to Set Terminal Port Switches for Different Devices  
DEVICES  
VDU or  
DTE  
Async Modem  
or DCE device  
Centronics  
Printer  
(Busy on 20)  
Tally printer  
Data Products  
(Busy on 19)  
“Y” VDU,  
Printer  
Cable  
Switch 2  
Switch 2  
Switch 2  
Switch 2  
Switch 2  
1 OFF  
2 OFF  
3 OFF  
4 OFF  
5 ON  
6 ON  
7 ON  
8 OFF  
1 OFF  
2 ON  
3 OFF  
4 OFF  
5 OFF  
6 ON  
1 OFF  
2 OFF  
3 OFF  
4 OFF  
5 ON  
6 ON  
7 ON  
8 OFF  
1 OFF  
2 OFF  
3 OFF  
4 ON  
5 OFF  
6 ON  
1 OFF  
2 OFF  
3 ON  
4 OFF  
5 OFF  
6 OFF  
7 OFF  
8 OFF  
7 ON  
8 OFF  
7 ON  
8 OFF  
Switch 3  
Switch 3  
Switch 3  
Switch 3  
1 OFF  
2 ON  
3 ON  
4 OFF  
5 OFF  
6 ON  
7 OFF  
8 OFF  
1 ON  
2 OFF  
3 OFF  
4 ON  
1 OFF  
2 ON  
3 ON  
4 OFF  
5 ON  
6 OFF  
7 OFF  
8 OFF  
1 OFF  
2 ON  
3 ON  
4 OFF  
5 OFF  
6 ON  
7 OFF  
8 OFF  
5 ON  
6 OFF  
7 OFF  
8 OFF  
Switch 6  
Switch 6  
Switch 6  
Switch 6  
1 ON  
2 OFF  
3 ON  
1 ON  
2 OFF  
3 ON  
1 ON  
2 OFF  
3 ON  
1 ON  
2 OFF  
3 ON  
4 OFF  
5 ON  
4 ON  
5 OFF  
4 OFF  
5 ON  
4 OFF  
5 ON  
OKIDATA  
Products  
(Busy on 11)  
Switch 2  
Switch 8  
1 OFF  
2 OFF  
3 ON  
9 ON  
10 ON  
4 OFF  
5 OFF  
6 ON  
7 ON  
8 OFF  
Switch 9  
4 OFF  
14  
 
CHAPTER 4: Switches  
SW6/ 7  
ON  
8
9
10  
BAUD RATE  
ON  
ON  
ON  
ON  
ON  
ON  
OFF  
OFF  
ON  
50  
75  
110  
134.5  
ON  
ON  
ON  
OFF  
ON  
OFF  
ON  
ON  
ON  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
150  
300  
600  
1200  
ON  
OFF  
ON  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
ON  
ON  
ON  
ON  
1800  
2000  
2400  
3600  
NOTE: Baud Rate  
selection has no  
effect if Terminal  
Speed Detect is  
selected.  
ON  
OFF  
ON  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
4800  
7200  
9600  
19.2K  
ON  
OFF  
ON  
OFF  
OFF  
OFF  
4.3 Modem Switches  
Modem port switches for Female DB25 Modem Connector  
Switch Bank S4, Switch:  
1-On connects pin 4 of connector to A/S-4’s input of  
CLEAR-TO-SEND  
2-On connects pin 5 of connector to A/S-4’s input of  
CLEAR-TO-SEND, for attaching DCE devices  
3-On connects pins 25 on both terminal and modem connectors  
to +5 volts DC.  
4-On connects pin 19 of connector to A/S-4’s input of  
CLEAR-TO-SEND, for printers with busy on pin 19  
5-On connects pin 20 of the connector to A/S-4’s input  
of CLEAR-TO-SEND, for devices with busy on pin 20  
6-On connects pin 6 of connector to A/S-4’s input of  
CARRIER DETECT  
7-On connects pin 8 of connector to A/S-4’s input of  
CARRIER DETECT  
8-On connects pin 15 of connector to A/S-4’s input of  
Transmit Clock for synchronous operation  
15  
 
PROTOCOL CONVERTER MODEL A/S-4  
Switch Bank S5, Switch:  
1-On connects pin 2 of connector to A/S-4’s output of  
Transmit Data, for attaching DCE devices  
2-On connects pin 3 of connector to A/S-4’s output of  
Transmit Data, for attaching DTE devices  
3-On connects pin 2 of connector to A/S-4’s input of  
Receive Data, for attaching DTE devices  
4-On connects pin 3 of connector to A/S-4’s input of  
Receive Data, for attaching DCE devices  
5-On connects pin 4 of connector to A/S-4’s output of  
REQUEST-TO-SEND, for attaching DCE devices  
6-On connects pin 5 of connector to A/S-4’s output of  
REQUEST-TO-SEND  
7-On connects A/S-4’s REQUEST-TO-SEND to A/S-4’s  
CLEAR-TO-SEND so that no external signals are needed.  
Used for Burroughs TDI and non-hardware throttle devices  
8-On connects pins 4 and 5 of connector so external devices  
throttle itself  
Switch Bank S7, Switch:  
1-On supplies internal clocking for A/S-4’s input of  
Transmit Clock  
2-On connects pin 17 of connector to A/S-4’s input of  
Receive Clock, for synchronous operation  
3-On supplies internal clocking for A/S-4’s input of Receive Clock  
4-On connects pin 20 of connector to A/S-4’s output of  
DATA-TERMINAL-READY, for attaching DCE devices  
5-On connects pin 20 of connector to A/S-4’s input of  
CARRIER DETECT  
6-On supplies 1X clock for internal modem port use  
7, 8, 9 and 10 reserved  
Switch Bank S6, Switch:  
6-On supplies 16X clock for internal modem port use, for synchronization of synchronous data over  
async modems  
16  
 
CHAPTER 4: Switches  
4.4 How to Set Modem Port Switches for Different Devices  
DEVICES  
ASYNC MODEM  
SYNC MODEM  
FRONT END PROCESSOR  
Switch 4  
1 OFF  
2 ON  
3 OFF  
4 OFF  
5 OFF  
6 ON  
Switch 4  
1 OFF  
2 ON  
3 OFF  
4 OFF  
5 OFF  
6 ON  
Switch 4  
1 OFF  
2 OFF  
3 OFF  
4 OFF  
5 ON  
6 ON  
7 OFF  
8 OFF  
7 OFF  
8 ON  
7 ON  
8 ON  
Switch 5  
1 ON  
Switch 5  
1 ON  
Switch 5  
1 OFF  
2 ON  
2 OFF  
3 OFF  
4 ON  
2 OFF  
3 OFF  
4 ON  
3 ON  
4 OFF  
5 OFF  
6 OFF  
7 OFF  
8 ON  
5 ON  
5 ON  
6 OFF  
7 OFF  
8 OFF  
6 OFF  
7 OFF  
8 OFF  
Switch 6  
6 ON  
Switch 6  
6 OFF  
Switch 6  
6 ON  
Switch 7  
1 ON  
2 OFF  
3 ON  
4 ON  
5 OFF  
6 OFF  
Switch 7  
1 OFF  
2 ON  
3 OFF  
4 ON  
5 OFF  
6 OFF  
Switch 7  
1 ON  
2 ON  
3 ON  
4 OFF  
5 ON  
6 OFF  
Switch 9  
9 OFF  
10 OFF  
Switch 9  
9 OFF  
10 OFF  
Switch 9  
9 OFF  
10 OFF  
NOTE  
Modem port baud rate is selected byH- application options menu.  
17  
 
PROTOCOL CONVERTER MODEL A/S-4  
4.5 Option Switches  
Switch Bank S8, Switch:  
1-RESERVED  
2-RESERVED  
3-RESERVED  
4-RESERVED  
5-RESERVED  
6-RESERVED  
7-RESERVED  
8-RESERVED  
9-On connects pins 9 on both terminal and modem connectors to +10 Volts DC.  
10-On connects pins 10 on both terminal and modem connectors to -10 Volts DC.  
Switch Bank S9, Switch:  
Switch  
Number  
Switch  
ON  
Setting  
OFF  
Function  
1
2
Terminal Port Data Bits  
Reset Default Options on Reset  
* 7  
NO  
8
YES  
3
4
5
6
7
8
9
Single or Multi LU  
Multi  
Single  
VDU/Printer “Y” Interface  
Terminal Speed Detection  
Option Change on Power Up  
Terminal Parity Type  
Terminal Parity  
* Disable  
DISABLE  
* YES  
Enable  
ENABLE *  
NO  
Even *  
ENABLE *  
DISABLE  
Odd  
DISABLE  
ENABLE  
TDI Transmit  
10  
TDI Receive  
ENABLE  
DISABLE *  
* = Factory Setting  
18  
 
CHAPTER 5: LED Indicator  
5. LED Indicator  
The front of A/S-4 enclosure provides 10 light emitting diodes (LED) indicators. The indicators are  
arranged and labeled in the following order, from left to right.  
TTX  
Terminal Transmit Data  
Terminal Receive Data  
Terminal Carrier Detect  
Terminal Clear To Send  
Error Condition  
TRX  
TCD  
TCTS  
ERROR  
POWER  
MCTS  
MCD  
Power On  
Modem Clear to Send  
Modem Carrier Detect  
Modem Receive Data  
Modem Transmit Data  
MRX  
MTX  
TTX  
TRX  
TCD  
Flashes as data is transmitted by the A/S-4 out the terminal port.  
Flashes as data is received by the A/S-4 from the terminal port.  
Lights when the A/S-4’s input of Carrier Detect is high on the terminal port. This light  
must be on while TRX is flashing for A/S-4 to process received data.  
TCTS  
Lights when the A/S-4’s input of Clear to Send is high on the terminal port. This light  
must be on for the A/S-4 to transmit data on the terminal port.  
ERROR  
POWER  
MCTS  
Error Condition Exists - Memory error, bad received block check, or buffer overflow.  
Lights when the A/S-4 is plugged in and the +5 Volt power supply is ok.  
Lights when the A/S-4’s input of Clear to Send is high on the modem port. This light  
must be on for the A/S-4 to transmit data on the modem port.  
MCD  
Lights when the A/S-4’s input of Carrier Detect is high on the modem port. This light  
must be on while the MRX is flashing for the A/S-4 to process received data  
MRX  
MTX  
Flashes as data is received by the A/S-4 from the modem port.  
Flashes as data is transmitted by the A/S-4 out the modem port.  
19  
 
PROTOCOL CONVERTER MODEL A/S-4  
6. Power Up and Configuration  
Menu Operations  
The A/S-4 unit options are mainly set by the operator through the  
use of menus. The A/S-4 provides a very flexible package of options so to allow any VDU to operate like  
an IBM 3278 terminal and an IBM 3287 printer or a 3770 work station. Because of the great numbers of  
options provided, it may take a little time to set up to A/S-4 unit, but once complete, the options need  
not be set up again. All options are battery protected for when the unit is turned off.  
6.1 Power Up  
To start installing your A/S-4 unit only the VDU need be connected. Connect to VDU, making sure all  
the following steps have been followed.  
1. Plug in, turn on, boot, or perform any other needed operation to ready the VDU.  
2. Set switches SW2, SW3, SW6 on A/S-4 for type of VDU connecting to, see Section 4.2 How to set  
Terminal Switches for different devices. The factory default switch settings are for a VDU DTE device.  
3. Set SW9 for communication options needed, refer to Section 4.5 Option Switches. The factory  
default switch settings are for 7 data bits, speed detection ON, menu operation ON, even parity. Be  
sure that SW9/6 is in the ON position: Option change on power up enabled.  
4. Plug the power transformer into any standard 110 volt AC power outlet. Plug the connector on the  
other end of the power cord into the mating connector on the back of the unit. Insert the connector  
so the small beveled lip faces up for ease of insertion. The beveled lip can be inserted up or down  
and the unit will work fine with no harm to the A/S-4. A substitute transformer may be ordered for  
the A/S-4 unit for 220 volts AC or other voltages.  
5. Plug an RS232-C cable from the VDU into the terminal connector on the back of the A/S-4. Pins 2-8  
and 20 are required.  
6. Plug an RS232-C cable from the modem or IBM host into the modem connector. Pins 2-8, 15, 17 and  
20 are required.  
After the above procedure has been completed, the A/S-4 should have three lights on, the power, TCTS,  
and TCD. If these lights are not all on the A/S-4 unit will not communicate with the VDU host properly.  
Refer to Section 11.0 Trouble Shooting Problems and Odd Installation Problems if all three lights will  
not come on.  
With all three lights on, the A/S-4 is waiting for the letter “S” from the VDU for auto speed detection if  
the option is enabled. The operator types lower or upper case “S” and the A/S-4 will calculate the baud  
rate and send out a power up message. The A/S-4 is capable of detecting baud rates of 300, 1200, 1800,  
2400, 4800 and 9600. If the speed detect option is off, the A/S-4 will send out the power up message two  
or three seconds after the three lights come on at the baud rate set by switches SW6 (refer to Section 4.1  
Terminal Switches). If the power up message does not look like Figure 1, check the option switch SW9  
or refer to Section 13.0 Trouble Shooting Problems and Odd Installation Problems. If the message  
“MEMORY ERROR U13 or U14” is displayed, refer to section 13 to determine if the A/S-4 is defective.  
20  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.2 Power Up Message  
The A/S-4 sends out the message in Figure 1 on power up or the raising of DTR (DATA TERMINAL  
READY) on the terminal device. This message informs the operator that the A/S-4 is ready to try to  
match the operator’s terminal or terminal emulation package with the VDU (VISUAL DISPLAY UNIT)  
list in the memory. The operator may now type the “HOME” key on his/her terminal so that the A/S-4  
may match the VDU device with the internal VDU list so that the clear screen, home cursor, position  
cursor commands, etc. to the VDU will be correct. If no match occurs, the A/S-4 defaults to the IBM  
3101 VDU command set. This is not a problem if your VDU is not an IBM 3101, as you may change the  
VDU by the use of menus. If your terminal does not have a home key, you may hit the space bar and set  
up the VDU by the menus. Hitting the space bar leaves the internal VDU the same as the last VDU used  
with the A/S-4. After typing “space” or “HOME” the A/S-4 will output the A/S-4’s main menu. If a VDU  
match did occur, the screen will clear before the main menu is displayed, otherwise the VDU device will  
scroll.  
A/S-4  
Type Home for VDU Match or Space  
(version 01-030986)  
Figure 1  
The version number in Figure 1 reveals the current firmware level executing in the A/S-4. In this  
example the firmware is level 1 of program on date 3/03/86.  
21  
 
PROTOCOL CONVERTER MODEL A/S-4  
6.3 A/S-4 Main Menu  
A set of menus are used to configure the A/S-4’s options so that it will operate properly with the  
particular VDU and host to which it is connected. In order to access these menus, SW9/6 must be in the  
ON position (see Section 4.5). All options are stored in battery-protected RAM so that they need not be  
reconfigured in the event of interruption of AC power to the unit.  
At the beginning of every A/S-4 menu are the current main three options, the application, VDU and  
keyboard. The application option informs you of which keyboard layout the A/S-4 will use when  
running SDLC/SNA.  
The A/S-4 Main Menu is shown in Figure 2. This menu coordinates the changing of the many A/S-4  
options into main categories, VDU Selection, VDU commands, VDU video commands, keyboard  
selection, keys on keyboard arrangement, application, application options, printer options and  
verification of switch settings.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = Standard  
PROTOCOL CONVERTER MAIN MENU  
A-RUN (NO CHANGES)  
ELSE CHANGE :  
B-VDU  
C-VDU Commands  
D-VDU Video Commands  
E-Keyboard  
F-Keys arrangement  
G-Application  
H-Application Options  
I-Printer Options  
J-Verify Switch Settings  
K-Reload Default Options  
Enter Letter:  
Figure 2  
22  
 
CHAPTER 6: Power Up and Configuration Menu Options  
The input allowed at this menu is one letter A thru J so to run or change an option. Listed below is a  
brief description of what each letter gives you access to, refer to the section listed for more details.  
Letter  
Section  
6.4  
Description  
A
B
Run A/S-4 as options are currently set.  
6.5  
Change internal A/S-4 VDU type to  
match terminal device. Changes table  
of VDU video commands used by A/S-4.  
C
D
E
F
6.6  
6.7  
6.8  
6.9  
6.10  
Change commands sent to VDU to  
perform functions like Home, Clear, etc.  
Turn on or off video. Also change video  
commands.  
Change to different type keyboard  
arrangements.  
Arrange keys in desired order  
on keyboard.  
G
Change between applications,  
Interactive or Batch mode of  
data transfer.  
I
6.12  
6.13  
6.14  
Printer Options  
J
K
Verify switch settings  
Set all A/S-4 options to default values.  
6.4 Switching from A/S-4’s Main Menu to Running the Application  
Once all operating parameters have been configured properly, the A/S-4 is ready to run. To connect the  
asynchronous devices to the application, enter the letter “A” for the RUN option of the A/S-4’s Main  
Menu. The A/S-4 will then proceed to connect up to the application in one of the following manners  
depending on which of the three states the host communication line is in:  
1. Modem not ready; if the modem is turned off or on a dial up line the modem has not been  
dialed or on a lease line the line is down, the A/S-4 will display on the VDU “DIAL UP SDLC  
LINE”. Once the phone line connection with the host has been establish the A/S-4 will  
proceed to one of the following two states. Refer to Section 13.0 on Trouble Shooting if the  
Dial Up message will not go away for more information.  
23  
 
PROTOCOL CONVERTER MODEL A/S-4  
2. Modem connected to host but LU inactive; if the LU is inactive the A/S-4 will display  
“WAITING FOR LU TO COME ACTIVE”. The LU should come active after a few seconds  
of this message appearing on the VDU. If the LU does not come active, then one of the  
following problems may exist:  
A. Host is not polling PU (Physical Unit) Solution: Have a network operator activate  
the PU and maybe the line also.  
B. PU address (or station address) is incorrect Solution: Return to A/S-4 menus and  
change PU address.  
C. LU address is incorrect Solution: Return to A/S-4 menus and change LU address.  
After the LU comes Active, the A/S-4 will proceed to the following state. Refer to Section 13.0 on  
Trouble Shooting if the LU will not activate for more information.  
NOTE  
In states 1 and 2 typing any key will return A/S-4 to it’s Main Menu  
3. Application running:  
Interactive - The A/S-4 will refresh the VDU’s screen with the last screen received from the  
host (which could be blank). Operation will then function as a 3278 CRT.  
Batch - The A/S-4 will display the status of the LU on the status line but no previous data from  
the system will be displayed on the VDU. Operation will then function as a 3770 work station.  
24  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.5 Changing the VDU Type  
If the current VDU type displayed at the top of the A/S-4 Main Menu does not match the VDU or VDU  
emulation package you have connected to the A/S-4, you may change the VDU type by entering the  
letter “B” in response to the Main Menu. The change VDU Menu will then be displayed on your screen  
as in Figure 3. If your screen is scrolling A/S-4 menus instead of clearing the screen before each menu,  
then you should change the VDU type. The change VDU menu allows you to match your VDU with one  
of the A/S-4’s fixed VDU types or to create a new A/S-4 VDU type. The A/S-4 feature for creating a new  
VDU type allows A/S-4 to work with any asynchronous device with screen capabilities.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = Standard  
Change: VDU  
1 or A-Exit  
2-Change Current Name  
3-Add Name  
4-Delete  
PROGRAMMABLE:  
FIXED:  
A-  
B-  
C-  
D-  
E-  
F-IBM 3101; DEC VT52  
G-ANSI STD: DEC VT100; Teletype 5410,5420; Televideo 970,960  
H-Televideo 910 thru 950; Zentec Zephyr  
I-Lear Siegler ADM3A  
J-IBM PC 3270  
Enter Number:  
Figure 3  
The change VDU menu allows 4 operations as described below:  
1. Exit - By entering the number 1 or the letter A the A/S-4 will return to the Main Menu with  
the VDU type currently at the top of the screen.  
2. Change current VDU type at top of screen - By entering the number 2, the operator may  
change the VDU type. The A/S-4 will then display “ENTER LETTER:” so that the operator  
may select the letter preceding the desired VDU type from the list of programmable and  
fixed VDU types. Fixed VDU types have the VDU commands characters hard coded into  
the A/S-4’s firmware and require that your VDU or VDU emulator match those commands  
character for character. Programmable VDU types have VDU command characters stored in  
battery protected memory so that command characters in the A/S-4 can be changed to match  
the operator VDU or VDU emulator that is not exactly like any of the Fixed VDU types.  
After the operator enters the desired letter (A thru J), the menu will redisplay with the new  
VDU type at the top of the screen using the new command character set of the selected VDU.  
25  
 
PROTOCOL CONVERTER MODEL A/S-4  
NOTE  
Selection of a blank programmable VDU type may cause erroneous command  
characters to be sent to the operators VDU. The programmable VDU type should be  
added by option 3 before it is selected.  
3. Add or Change Name - by entering a 3 the operator is able to add a name to or change a  
name from the “PROGRAMMABLE” column see figure 4. This is done when the operator’s  
VDU does not match one of the “FIXED” VDU’s and it allows him to define to the A/S-4 the  
various commands his VDU needs to operate properly (e.g., the command from the A/S-4  
which will cause his VDU to clear the screen). In the example shown in figure 4, the operator  
has given the name “NEW VDU” to VDU A. Operator input is underlined. The 10 characters  
are filled out with spaces or just type carriage return. By typing the letter “H”, he has copied  
the characteristics of VDU H into those of “NEW VDU”. The “CURRENT” header will now  
show the VDU as “NEW VDU”. Using the VDU commands menu (selection C on the Main  
Menu) he can now change the clear screen command (or any other command) from the  
command copied from VDU H to whatever “NEW VDU” needs (these commands may be  
found in the NEW VDU manual).  
4. Delete Name - By entering a 4 the operator can delete a name from the “PROGRAMMABLE”  
VDU list.  
Enter Number: 3 Enter Letter A  
Enter A 10 Character Name: NEW VDU  
Make New NEW VDU Name Look like established Name: (Enter Letter) H  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = NEW VDU  
Keyboard = Standard  
Change: VDU  
1 or A-Exit  
2-Change Current Name  
3-Add or Change Name  
4-Delete  
PROGRAMMABLE:  
A-NEW VDU  
FIXED  
F-IBM 3101; DEC VT52  
B-  
C-  
D-  
E-  
G-ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
H-Televideo 910 thru 950; Zwntec Zepher  
I-Lear Siegler AND 3A  
J-IBM PC 3270  
Figure 4  
26  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.6 Changing VDU Commands for the VDU Type Selected  
By selecting item C from the main menu (Section 6.3), the operator obtains the menu shown in figure 5.  
Items from this menu can only be changed for programmable VDUs. This menu allows you to define  
the video commands our VDU expects. You should consult your VDU users manual to determine what  
the command characters are for the various VDU functions.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = NEW VDU  
Keyboard = STANDARD  
Change CMD VDU Responds to for:  
A-Exit  
B-ESC  
C-ESC `  
D-ESC a  
E-ESC `  
F-ESC a  
G-ESC `  
H-ESC a  
I-ESC *  
J-CTL ^  
K-ESC =  
L-  
VDU CMD to Follow (Set up 1st!!!)  
Data to Printer:  
Data to Printer:  
Data to Card:  
Data to Card:  
Data to Disk:  
Data to Disk:  
Clear Screen  
Home  
ON  
OFF  
ON  
OFF  
ON  
OFF  
Cursor Position: Start Char  
Row Offset Value  
M-CTL @  
N-  
O-CTL @  
P-NO  
Row/Col Separator  
Column Offset Value  
Final Char  
Decimal Row/Col Values  
Enter Letter:  
Figure 5  
Figure 6 gives an example of how the operator would enter a new Home Cursor command to match his  
VDU. Operator input is underlined.  
Enter Letter: J Enter CMD: CTL Y  
Figure 6  
To disable the two character Printer, Card or Disk on/off command, enter a space for the command,  
also use a space to terminate the command.  
27  
 
PROTOCOL CONVERTER MODEL A/S-4  
6.7 Changing Video Attributes and Commands for VDU  
The menu obtained by selecting item D of the main menu is shown in Figure 7. This menu allows the  
operator to define the parameters which will give the proper video highlighting to the fields on the VDU  
screen.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = NEW VDU  
Keyboard = STANDARD  
Cmd chars for different VDU video displays for different type fields  
A-Exit  
B-Start of video cmd: CTL [  
C-End of video cmd:  
D-Video cmd takes up a space on VDU?N  
Middle of cmd:  
For Data Type of:  
E-(=UNPROTECTED, ALPHANUMERIC, LOW INTENSITY  
F-(=UNPROTECTED, ALPHANUMERIC, HIGH INTENSITY  
G-(=UNPROTECTED, NUMERIC, LOW INTENSITY  
H-(=UNPROTECTED, NUMERIC, HIGH INTENSITY  
I-)=PROTECTED, ALPHANUMERIC, LOW INTENSITY  
J-)=PROTECTED, ALPHANUMERIC, HIGH INTENSITY  
K-)=PROTECTED, NUMERIC, LOW INTENSITY  
L-)=PROTECTED, NUMERIC, HIGH INTENSITY  
M-(=NONDISPLAY & NONPRINT  
Enter Letter:  
Figure 7  
The host CPU can send commands to its terminals to define how the video display will be printed. An  
example is a display using highlighted areas for data entry. The A/S-4 can perform this type of display  
presentation for almost any terminal. In operation the A/S-4 intercepts the host video commands and  
translates them into the commands that the attached VDU needs to perform the function.  
If you are using special displays then you must use selections B, C and D to set up your display attributes.  
Consult your VDU users manual to determine which characters are used to create the type display you  
need and enter those characters in the fields as needed.  
28  
 
CHAPTER 6: Power Up and Configuration Menu Options  
The general format of a video command to a VDU is as follows:  
ESC  
X
Y
Z
Start of video cmd.  
Middle of video cmd.  
nd of video cmd.  
X, Y and Z represent ASCII characters. The end of video command may not be necessary and therefore  
displayed as a blank. Items B, C and E through M can be defined using the format shown above.  
Item D differentiates between two techniques of video highlighting: 1) The video command occupies a  
space on the screen and defines the start of a video highlight field (e.g., Televideo 925). 2) The video  
command does not occupy a space and does determine the type of video highlight for all subsequent  
received characters, regardless of their positions on the screen (e.g., DEC VT100).  
Video types referred to in figure 7 correspond to the video highlighting codes which are sent to the A/S-  
4 from the IBM host. It is up to the operator to enter the proper value for the middle  
of command to match (or mismatch, if desired) each video type.  
If no video highlighting is desired, the operator may turn off (prevent the A/S-4 from sending video  
commands) this feature by entering a space for Item B, start of video command. The A/S-4 assumes if  
there is no start command, than there is no video commands for the VDU.  
29  
 
PROTOCOL CONVERTER MODEL A/S-4  
ESC  
DEL  
LINE  
! 1  
@ 2  
# 3  
$ 4  
% 5  
^ 6  
& 7  
* 8  
( 9  
)0  
_ -  
+ =  
TAB  
Q
W
E
R
T
Y
U
I
O
P
{ [  
} ]  
RETURN  
PFI  
PF2  
PF3  
PF4  
PF5  
PF6  
PF7  
UP  
PF8  
PF9  
PF10  
CUR  
SEL  
DISC  
VDC  
FIELD DUP  
MARK  
HOME  
ARROW  
J
CTRL  
LOCK  
A
S
PF12  
D
F
G
PF15  
H
PF16  
K
PF18  
L
: ;  
PF20  
" '  
| \  
PF11  
PF13  
LOCAL PRINT  
PRINT  
PF14  
PF17  
NEW  
LINE  
PF19  
DUAL  
MONO  
SHIFT  
Z
X
C
V
B
PA1  
N
M
,
.
? /  
SHIFT  
PF21  
PF22  
DISC  
PF23  
DISC  
PF24  
RE  
PA2  
PA3  
IDENT CENT  
RESTR  
SNAP  
DOWN ENTER  
ARROW  
SDLC VDU  
DSPLY  
SPACE BAR  
BOLD PRINT = CONTROL CMDS  
NORMAL PRINT = ESCAPE CMDS  
A/S-4 Standard Keyboard Layout  
30  
 
CHAPTER 6: Power Up and Configuration Menu Options  
~ `  
! 1  
PF1  
@ 2  
PF2  
# 3  
PF3  
$ 4  
PF4  
% 5  
PF5  
-- 6  
PF6  
& 7  
PF7  
* 8  
PF8  
( 9  
PF9  
) 0  
PF10  
_ -  
PF11  
+ =  
PF12  
Q
W
E
R
T
Y
U
I
O
P
!
|
IBM PC Keyboard Layout  
31  
 
PROTOCOL CONVERTER MODEL A/S-4  
ADM 1178 Keyboard Layout  
32  
 
CHAPTER 6: Power Up and Configuration Menu Options  
IBM 3101 Keyboard Layout  
33  
 
PROTOCOL CONVERTER MODEL A/S-4  
PNS Keyboard Layout  
34  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.8 Changing Keyboard Layout Type  
By selecting E from the main menu, the menu shown in Figure 8 is obtained. This is used to select the  
specific keyboard mapping the operator desires. Selection of F, G and H provide fixed keyboards shown  
on the previous pages. Programmable keyboards may be added as any of the selections A through E. By  
using a programmable selection, the operator can design the keyboard to his or her liking.  
To change the keyboard used enter 2 then select the keyboard layout you desire from those listed.  
If you prefer an unlisted keyboard type you should select one of the letters under programmable and  
enter the name (10 characters max). If the name is less than ten characters long, type carriage return or  
spaces to complete the ten character name. If your keyboard looks like one of the fixed keyboards then  
you should enter its letter as a response to “make new keyboard look like established name”.  
NOTE  
Selection of a blank entry from the programmable list may cause the A/S-4 to  
malfunction.  
Names of programmable keyboards may be added, changed, or deleted by using selection 3 and 4.  
If a programmable keyboard has been selected, the operator should now set up the keys arrangement as  
he or she wishes using selection F from the A/S-4’s main menu.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = Standard  
Change: Keyboard  
1 or A-Exit  
2-Change Current Name  
3-Add Name  
4-Delete  
PROGRAMMABLE:  
FIXED:  
A-  
B-  
C-  
D-  
E-  
F-STANDARD  
G-IBM PC 3270  
H-ADM 1178  
I-IBM 3101  
J-PNS  
Enter Number:  
Figure 8  
35  
 
PROTOCOL CONVERTER MODEL A/S-4  
6.9 Changing Keys Arrangements on a Particular Keyboard Layout Type  
Selection of item F from the main menu will cause the menu shown in Figure 9 to be displayed.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = STANDARD  
A-Exit  
B-PF Keys  
C-PA Keys  
D-Command Keys  
E-IBM Keys  
F-PROTOCOL CONVERTER Keys  
Enter Letter:  
Figure 9  
This menu allows for great flexibility in keyboard layouts. If you desire you may alter Key assignments or  
design your own keyboard layout. The selections available from this menu is as follows:  
Exit  
Go back to main menu  
PF Keys  
Programmable function keys  
PA Keys  
Programmable attention keys  
Command Keys  
IBM Keys  
Keys used for editing & cursor movement (e.g., Clear)  
Keys used to perform IBM terminal operations (e.g., Field Mark)  
Protocol  
Converter Keys  
Keys used to control the A/S-4’s operation  
(e.g., Restart A/S-4, which will take operator back to main menu)  
The keys arrangement can only be changed if the current keyboard is a programmable keyboard (see  
Section 6.8)  
36  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.9.1 PF KEYS  
Selection of item B from the menu shown in Figure 9 will cause the menu shown in Figure 10 to be  
displayed.  
If the operator wants to use a different key for PF2, he would first enter the letter “C” and then enter the  
new value(s) in response to prompt(S) for the new value(s). The key sequences entered for the PF keys  
must be either control or escape sequences to work properly, and any specific key sequence must be  
entered for only one key. After a new value has been entered, the menu will be redisplayed and will  
show the new value(s).  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televdeo 970, 960  
Keyboard = STANDARD  
Change: PF Keys (Keys Typed on VDU to Perform Function)  
A-Exit  
B-ESC Q or ESC q=PF1  
D-ESC E or ESC e=PF3  
F-ESC T or ESC t=PF5  
H-ESC U or ESC u=PF7  
J-ESC O or ESC o=PF9  
L-ESC A or ESC a=PF11  
N-ESC D or ESC d=PF13  
P-ESC G or ESC g=PF15  
R-ESC J or ESC j=PF17  
T-ESC L or ESC l=PF19  
V-ESC Z or ESC z=PF21  
X-ESC C or ESC c=PF23  
C-ESC W or ESC w=PF2  
E-ESC R or ESC r=PF4  
G-ESC Y or ESC y=PF6  
I-ESC I or ESC i=PF8  
K-ESC P or ESC P=OF10  
M-ESC S or ESC S=PF12  
O-ESC F or ESC f=PF14  
Q-ESC H or ESC h=PF16  
S-ESC K or ESC k=PF18  
U-ESC ; or  
W-ESC X or ESC x=Pf22  
Y-ESC V or ESC v=PF24  
=PF20  
Enter Letter:  
Figure 10  
37  
 
PROTOCOL CONVERTER MODEL A/S-4  
6.9.2 PA KEYS  
Selection of item C from the menu shown in figures 9 will cause the menu shown in figure 11 to be  
displayed. Keys changes are performed in the same manner as the PF key changes.  
CURRENT:  
Application = SDLC/SNA 3274/76 interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = STANDARD  
Change: PA Keys (Keys Typed on VDU to Perform Function)  
A-Exit  
B-ESC B or ESC b=PA1  
D-ESC M or ESC m=PA3  
C-ESC N or ESC n=PA2  
Enter Letter:  
Figure 11  
6.9.3 COMMAND KEYS  
Selection of item D from the menu shown if figure 9 will cause the menu shown in figure 12 to be  
displayed. Key changed are performed in the same manner as the PF key changes.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = STANDARD  
Change: Command keys (Keys Typed on VDU to Perform Function)  
A-Exit  
B-CTL I or  
=Tab  
C-CTL Y or  
E-CTL H or  
G-ESC - or  
I-CTL G or  
K-CTL L or  
M-CTL N or  
=Back Tab  
D-CTL J or CTL J  
F-CTL O or  
H-CTL H or  
=New Line  
=Home  
=Back Space  
=Clear  
=Left 2 Arrow  
=Right 2 Arrow  
=Down Arrow  
=Left Arrow  
J-CTL K or  
L-CTL U or  
N-CTL M or  
=Right Arrow  
=Up Arrow  
=Enter (Send)  
O-ESC 9 or =Attention  
Enter Letter:  
Figure 12  
38  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.9.4 IBM KEYS  
Selection of item E from the menu shown in figure 9 will cause the menu shown in figure 13 to be  
displayed. Key changes are performed in the same manner as the PF key changes.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
Keyboard = STANDARD  
Change: IBM Keys (Keys on VDU to Perform Function)  
A-Exit  
B-CTL T or  
D-ESC 7 or  
F-ESC 5 or  
H-CTL P or  
J-ESC 8 or  
=Duplicate  
C-CTL R or  
E-ESC 6 or  
G-ESC . or  
I-ESC M or  
K-ESC 0 or  
=Field Mark  
=Erase Input  
=Ident  
=Device Cancel  
=Reset  
=Erase EOF  
=Insert Mode  
=Cursor Select  
=System Request  
Enter Letter:  
Figure 13  
6.9.5 A/S-4 KEYS  
Selection of item F from the menu shown in figure 9 will cause the menu shown in figure 14 to be  
displayed. Key changes are performed in the same manner as the PF key changes.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970, 960  
keyboard = STANDARD  
Change: Protocol Converter Keys (Keys on VDU to Perform Function)  
A-Exit  
B-CTL Z OR  
D-CTL X or  
F-ESC / or  
H-CTL D or  
J-ESC 2 or  
L-ESC 4 or  
=Restart Protocol Converter  
=Disc. SDLC  
C-CTL C or  
E-CTL A or  
G-CTL V or  
I-CTL F or  
K-ESC l or  
M-ESC 3 or  
=Disc. VDU  
=Dual or Mono Case  
=Redisplay Screen  
=Stop/Start Print  
=Line Delete  
=Cent Key  
=Local Print  
=Line Insert  
=Char Insert  
=Char Delete  
Enter Letter:  
Figure 14  
39  
 
PROTOCOL CONVERTER MODEL A/S-4  
The functions of the A/S-4 Keys are as follows:  
Restart Protocol  
Converter  
Jump to A/S-4’s main menu for  
option changes.  
Disconnect VDU  
Causes A/S-4 to drop DTR to device connected to terminal port.  
Used to disconnect a modem attached to the terminal port in a  
dial-up configuration  
Disconnect SDLC  
Causes A/S-4 to drop DTR to device connected to modem port.  
Used to disconnect a modem attached to the modem port in a dial-  
up configuration.  
* Dual or Mono Case  
* Cent Key  
Used to shift between Dual (Upper & Lower Case) and Mono  
(Upper Case only).  
Allows cent ( ) key to be sent to IBM host since most VDU’s do not  
have a cent key.  
* Redisplay Screen  
Used to redisplay current screen. Used when VDU is attached to  
terminal port through dial-up modem and garbage has been  
displayed on screen.  
* Local Print  
Print VDU screen on printer  
* Stop/Start Print  
* Line Insert  
Allows stopping of printer to align forms and then starting again.  
Causes a blank line to be inserted at cursor location.  
Causes a line of data to be deleted at cursor location.  
Causes a Null Character to be inserted at cursor location.  
Causes a data character to be deleted at cursor location.  
* Line Delete  
* Character Insert  
*Character Delete  
*Keys used only during interactive application, not used in batch.  
40  
 
CHAPTER 6: Power Up and Configuration Menu Options  
6.10 Changing Application  
The A/S-4 is shipped from the factory to power up in the SDLC/SNA 3274/76 Interactive mode of  
operation. The current mode of operation can be determined by looking at the top of the main menu,  
as in Figure 14 (it is Interactive). To change to Batch operation, the operator types the letter G in  
response to the main menu. The main menu will then be redisplayed with “SDLC/SNA 3776/7 Batch”  
at the current application location on the main menu. To go back to interactive, type G again. The  
current mode of operation is protected in non-volatile RAM, so that on power up it will return to the last  
operating state.  
6.11 Changing Application Options  
Selection of item H from the main menu will cause the menu shown in Figure 15 or 16 to be displayed.  
The A/S-4 is shipped from the factory to power up in the SDLC/SNA 3274/76 Interactive mode of  
operation. Selection of item H from the menu shown in Figure 2 will cause the menu shown in Figure  
15 to be displayed.  
Figure 16 shows the application options for the A/S-4 when selected to run in the SDLC/SNA 3776/77  
Batch mode.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970,960  
Keyboard - STANDARD  
Change: Application Options  
A-Exit  
B-XID=018085B8  
C-PU Addr=F7  
E-XON/OFF=Both  
G-PRT LU Addr=03  
D-SDLC Baud Rate=1200  
F-VDU LU Addr-02  
H-PRT LU Type=03  
Enter Letter:  
Figure 15  
41  
 
PROTOCOL CONVERTER MODEL A/S-4  
6.11.1 CHANGING INTERACTIVE APPLICATION OPTIONS  
The change Application menu allows 8 operations as described below:  
A. Exit - By entering the letter A the A/S-4 will return to the Main Menu.  
B. XID - By entering a B the operator is able to change the A/S-4 SDLC control unit identifier. Only  
hexadecimal numbers are allowed to be entered for this selection, the first two digits are fixed at 01.  
The next character indicates what type of device the A/S-4 (7=3274, 8=3276, 0=3774, 1=3774P,  
2=3771 and 3=3776/77).  
C. PU Addr - To change the units physical unit address enter C. Only hexadecimal numbers are allowed  
to be entered for this selection; addresses x’00’-SSCP address and x’FF’-Global SDLC address can not  
be used.  
D. SDLC Baud Rate - By entering a D the operator can select the baud rate at which the host will  
transmit and receive data from the A/S-4. This selection is only used when running SDLC over  
asynchronous modems or when the A/S-4 is supplying clocks to a front end processor. After entering  
the letter D the current baud rate will be displayed. To change it, enter the letter Y which will scroll  
pass each selectable baud rate, when the correct rate is displayed entering any key other than the Y  
will save the new baud rate.  
NOTE  
SDLC baud rate has no effect when running with synchronous modems.  
E. XON/OFF - Entering an E allows the selecting of the DC1 (XON), DC3 (XOFF) protocol on the  
A/S-4’s terminal port. This protocol can be used; TO the unit or FROM the unit or in BOTH  
directions. To disable the XON/OFF protocol, select the option for OFF by the use of the letter Y,  
entering any key will save the selection. This protocol is used so the A/S-4 or the attached async  
device will not overflow each others buffers with data. If the A/S-4 has room to store only 20  
characters from the VDU, the unit will drop it’s RTS signal (can be connected to pin 4, 5, 11, 19 or 20  
of EIA connector) and send an XOFF character if option is set for FROM or BOTH. When the A/S-4  
is sending data to the VDU, the VDU can stop the flow by dropping it’s signal connected to the A/S-  
4’s CTS or by sending a XOFF character, if the A/S-4’s XON/XOFF option is set for TO or BOTH.  
F. VDU LU Addr - The VDU LU address can be changed by entering the letter F. For this selection only  
hexadecimal numbers are allowed to be entered, from the range of X’01’ to X’FF’ but for most  
installations the address range of the specific type of control unit is as follows:  
IBM* 3274 = X’02’-X’21’  
IBM* 3276 = X’02’-X’09’  
IBM* 3776 Model 3 and 4 = X’01’-’06’  
NOTE  
Do not set the VDU and PRT LU addresses to the same values.  
42  
 
CHAPTER 6: Power Up and Configuration Menu Options  
G. PRT LU Addr - By entering a G the operator can select which LU’s data will go to the printer  
attached to the A/S-4’s terminal port. Selection of this address is done the same as for the VDU LU  
addr above.  
H. PRT LU Type - The printer LU type is changed by entering the letter H which causes the LU type to  
toggle between type 1 and 3. Type 3 print data is preceded with a Write command followed by a  
WCC with the start printer bit set. Type 1 data doesn’t have this Write command or WCC in its data.  
CURRENT:  
Application = SDLC/SNA 3776/77 Batch  
VDU = ANSI STD; DEC VT100; Teletype 5410, 5420; Televideo 970,960  
Keyboard = STANDARD  
Change: Application Options  
A-Exit  
B-XID=01300FF  
D-SDLC Baud Rate=1200  
F-VDU LU Addr=01  
H-Start of File=CTL B  
J-Send FMH-2 to VDU=NO  
L-Echo Input=YES  
C-PU Addr=F7  
E-XON/XOFF=OFF  
G-PRT LU Addr=02  
I-End of File=CTL C  
K-Precede TRN Ctl Chars  
with DLE=YES  
M-Card Input Data Only=YES  
N-VDU Auto Logon Msg=LOGON  
APPLID (SYSA) LOGMODE  
(BUF512) DATA (RMT13,,,  
CTL \ L163AC00CTL \)  
O-PRT Auto Logon Field=L163AC01  
P-VDU/PRT Auto Signon Msg=/*SIGNON  
Enter Letter:  
Figure 16  
43  
 
PROTOCOL CONVERTER MODEL A/S-4  
6.11.2 CHANGING BATCH APPLICATION OPTIONS  
The change Application menu allows 16 operations as described below:  
A thru G - are the same as for changing Interactive options, refer to section 6.11.1 for details.  
H. Start of File - By entering an H the operator can select the first character that must be received from  
the VDU before any data is stored and then transmitted to the host. This character is also the first  
character sent to the VDU when data is received from the host. This is a single character command  
that can be a control character displayed as CTL or a printable character. The Start of File character  
can be disabled by setting it to a null X’00’ or space character.  
I. End of File - This single character command that causes the VDU to terminate the transmission of  
data to the host and is received by the VDU when an end of message, is received from the host can be  
changed by entering an I. This command is selected and disabled the same as the Start of File  
character described above.  
J. Send FMH-2 to VDU - Option can be toggled on or off by entering the letter J. When this option is  
enabled “YES” a Function Management Header-2 received from the host is sent to the VDU, for  
complete details refer to Section 8.1 on Batch operation.  
K. Precede TRN Ctl Chars with DLE - By entering a K, this option can be toggled on or off. This causes  
transparent control characters (X`3F’ or less) received from the host to be made a printable ASCII  
character by setting its two most significant bits. This character then would be preceded with a DLE  
character (X`10’) before being sent to the VDU if option is set for “YES”. This option also  
determines if data received from the VDU will be preceded by a DLE if the character is less than a  
X`20’ space character.  
L. Echo Input - By entering a L the operator can toggle this option on or off if he would like all  
characters transmitted by the VDU to the A/S-4 sent back to the VDU.  
M. Card Input Data Only - Option can be toggled on (“YES”) by entering an M, which would cause all  
data received from the VDU to be transmitted to the host in card format by the inbound (VDU) LU.  
With this option on, no device indicator should be sent to the VDU. When this option is off (“NO”),  
data received from the VDU must be preceded by a device indicator which determines what device  
(console, card, printer or disk) is sending the data to the host. Refer to section 8 for more  
information on the device indicator. With option on, only the inbound (VDU) LU can send data to  
the host so both LU’s must be set for Auto Logon to become active with the application (e.g. JES2).  
44  
 
CHAPTER 6: Power Up and Configuration Menu Options  
N. VDU Auto Logon Msg - This 80 character message can be changed by entering the letter N followed  
by the Logon message, containing any printable ASCII character (X`20’-X`7F’). The field separator  
(X`1C’) character, which is used to delimit the different logon strings for the VDU LU and the PRT  
LU. The carriage return (X`0D’) character is used to indicate the end of the logon message. The  
auto logon is enabled whenever any data is present in the logon message. To disable auto logon,  
enter a carriage return as the first character of the message. This logon message will be sent to the  
host by the VDU (inbound) LU when this LU becomes active. All data except the CTL\’s (field  
separators) will be sent.  
O. PRT Auto Logon Field - This 10 character field can be changed by entering the letter O followed by  
the logon field, containing any printable ASCII character (X`20’-X`7F’). The carriage return  
(X`0D’) character terminates the end of the field. This field if selected, will cause an auto logon  
message to be sent by the PRT (outbound) LU when the PRT LU becomes active. The logon  
message will be the same one as for the VDU LU except the data enclosed by CTL\’s will be replaced  
with the PRT auto logon field. The PRT logon field is disabled by entering a carriage return as the  
first character of the PRT logon field.  
P. VDU/PRT Auto Signon Msg - This 80 character message can be changed by entering the letter P  
followed by the signon message, containing any printable ASCII character (X`20’-X`7F’). This  
carriage return (X`0D’) character terminates the signon message. This message if selected, will be  
sent by the VDU LU and PRT LU to the host after a LU-to-LU session is established for the respected  
LUs. Entering a carriage return as the first character of the message will disable the auto signon.  
NOTE  
The auto logon and signon messages cannot contain any character used only in  
EBCDIC (e.g. cent character X`4A’).  
6.12 Printer Options  
Selection of item I from the main menu will cause the menu in Figure 17 to be displayed. This menu is  
used to select default printer settings for the printer attached to the A/S-4. Selection of B, C and D are  
considered programmable in that the host computer can send:  
1. Set Horizontal Format (SHF) command to change the B-  
Column Width.  
2. Set Vertical Format Density (SVF) command to change C-Lines Per Page  
3. Set Line Density (SLD) command to select a different D-Lines Per Inch.  
45  
 
PROTOCOL CONVERTER MODEL A/S-4  
These new values, if received from the host would then be sent to the printer if the G-Start Char-FORMS  
or K-Start Char-DENSITY are selected.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410,5420; Televideo 970,960  
Keyboard = STANDARD  
Change: Printer Options  
A-Exit  
B-Column Width (xxx)=132  
C-Lines Per Page (xxx)=066  
D-Lines Per Inch (xxx)=006  
E-Single/Double Space=Single  
F-MONO/Dual Case = Dual  
Forms Set-Up Command Sequence:  
G-Start Char-FORMS=  
H-Multiple - (‘xxx’ X Inches)-xxx=  
I-Separator Char=CTL @  
J-Final Char=CTL @  
K-Start Char-DENSITY=  
L-Separator Char-DENSITY=CTL @  
M-Final Char-DENSITY=CTL @  
Enter Letter:  
Figure 17  
The Printer Options menu allows 13 operations as described below:  
A. Exit - By selection the letter A the A/S-4 will return to the main menu.  
B. Column Width (xxx) - This value is used to define the length of a print line and can be changed by  
entering the letter B, followed by any decimal number value from 001 to 255. An entry larger than  
255 will set the column width to a value less than 255. The host set Horizontal Format (SHF)  
command can temporarily change the column width used by the printer with the MPP (maximum  
print position) value enclosed in the SHF command. This new MPP value will not be displayed in the  
Column Width option. Refer to Section 8, Batch operation for more details.  
C. Lines Per Page (xxx) - Indicates the number of print lines per page (page depth) and is changed by  
entering the letter C, followed by any decimal number value from 001 to 255. Any entry larger than  
255 will set the lines per page to a value less than 255. The host Set Vertical Format (SVF) command  
can temporarily change the lines per page used by the printer with the MPL (maximum presentation  
line) value enclosed in the SVF command. This new MPL value will not be displayed in Lines Per  
Page option. Refer to Section 8, Batch operation for more information.  
46  
 
CHAPTER 6: Power Up and Configuration Menu Options  
D. Lines Per Inch (xxx) - By entering the letter D, followed by any decimal number from 001 to 063, the  
operator can change the lines per inch (LPI) the printer will print. If a decimal value larger than  
063 is entered, the LPI option will be set to a value less than 063. The host Set Line Density (SLD)  
command can temporarily change the lines per inch used by the printer. This new LPI value will not  
be displayed in the Lines Per Inch option. See Section 8, Batch operation for more information.  
E. Single/Double Space - Option can be toggled from Single (NL x`15’ received from host send CR LF  
to printer) to Double (NL x `15’ received from host send CR LF LF to the printer) line spacing.  
F. MONO/Dual Case - By entering an F the operator can toggle from Dual (upper and lower case  
characters sent to the printer) to MONO (only upper case characters are sent to the printer, if a lower  
case character is received from the host it is converted to upper case).  
The following commands are sent to the attached printer to change or set the printer for the selected  
parameters:  
G. Start Char-FORMS - This two character command can be changed by entering the letter G followed  
by any ASCII control character (X`00’-X`20’) for the first character and any ASCII character for the  
second one. Entering a space character as the first character of the command will disable this  
option. The Start character is used in conjunction with the multiple, separator and final forms  
characters to change or set the attached printer’s programmable settings, refer to section 6.12.1 for  
details.  
H. Multiple -xxx- Three character command can be changed by entering the letter H followed by a  
space or any decimal digit 0 - 9. Entering a space as the first character will turn off this option. This  
option in conjunction with the Start Char-FORMS, Separator and final forms character can change  
or set the printer’s programmable settings. The Multiple value is also used with the Start Char-  
DENSITY, Separator and final density characters to change or set the printer’s lines per inch setting.  
Refer to Section 6.12.1 for details.  
I. Separator Char - By entering the letter I followed by a single ASCII character will change the character  
sent after the Start FORMS character to set the printer’s programmable settings. The separator  
character will not be sent if set for a null (CTL @), this can be done by using the terminal’s Break key.  
Refer to Section 6.12.1 for details.  
J. Final Char - This single character value is sent after the Forms Separator character to set the printer’s  
programmable settings. The final character may be changed by entering the letter J followed by any  
ASCII character. This final character is disabled by setting it to a null (CTL @). Refer to section  
6.12.1 for more information on setting printers forms.  
K. Start Char-DENSITY - This two character command can be changed by entering the letter K followed  
by any ASCII control character (X`00’-X`20’) for the first character and any ASCII character for the  
second one. Entering a space for the first character of the command will disable this option. The  
Start character is used in conjunction with the multiple, separator and final density characters to  
change or set the attached printer’s lines per inch setting, refer to Section 6.12.1 for details.  
L. Separator Char - By entering the letter L followed by a single ASCII character will change the  
character sent after the Start density character to set the printer’s lines per inch setting. The  
separator will not be sent if set for a null (CTL @). Refer to section 6.12.1 for description of  
command usage.  
M. Final Char - This single character value, sent after the density separator character to set the printer’s  
lines per inch setting, may be changed by entering the letter M followed by any character. This final  
character is disabled by setting it to a null (CTL @). See Section 6.12.1 for details on operation.  
47  
 
PROTOCOL CONVERTER MODEL A/S-4  
PROGRAMMABLE PRINTER OPTIONS  
Print data received from the host or printed by a local print function will be formatted by the values set  
in the Printer Options menu (e.g. Column Width, Lines Per Page, Single spacing). The A/S-4 is capable  
of having numerous printer options changed while communicating with a host program. When the  
printer is an LU type 3, the only change possible from the program is the number of characters printed  
per line. This is defined in the write control character (WCC) of the printer message. For an LU type 1,  
many changes are possible by the use of SNA Character String (SCS) control codes described below:  
a. Set Horizontal Format (SHF) command defines the maximum presentation position (MPP),  
the left margin (LM), right margin (RM) and up to six horizontal tab stops for a page of  
print. At the present time, the only value passed on to the printer by the A/S-4 is the MPP  
(column width) and is done so by the use of the FORMS commands set up in the Printer  
Options menu. When the SHF is received, the new values override any default values set by  
the printer option menu and the new forms value is then sent to the printer. If the Start  
Char-FORMS is disabled, the new values are not sent to the printer.  
The following is an example of setting the printer for a 80 column page:  
ESC, F, 8, 0 - OKI Microline 83A command to set 80 column page  
Printer Options Menu settings:  
G-Start Char-FORMS=ESC F  
H-Multiple - (`xxx’ X inches)-xxx=001  
I-Separator Char=CTL @  
J-Final Char=CTL @  
b. Set Vertical Format (SVF) command defines the maximum presentation line (MPL), top  
margin (TM), bottom margin (BM) and up to six vertical tab stops for a page of print. At the  
present time the only value passed on to the printer by the A/S-4 is the MPL (lines per page)  
and is done so by the use of the Forms commands set up in the Printer Options menu. When  
the SVF is received the new values overrides any default values set by the printer option menu  
and the new forms value is sent to the printer. If the Start Char-FORMS is disabled, the new  
values are not sent to the printer.  
The following is an example of setting the printers page length of 11 inches.  
ESC,[,7920r - GENICOM 3000 command to set 11 inch page  
Printer Options Menu settings:  
G-Start Char-FORMS=ESC [  
H-Multiple - (`xxx’ X inches)-xxx=720  
I-Separator Char=CTL @  
J-Final Char=r  
c. Set Line Density (SLD) specifies the (LPI) distance to be moved for a single line (vertical  
spacing), as in NL or LF. When the SLD is received the new value overrides any default lines  
per inch (LPI) value set by the printer options menu and the new LPI value is then sent to the  
printer. If the Start Char-DENSITY is disabled, the new values are not sent to the printer.  
48  
 
CHAPTER 6: Power Up and Configuration Menu Options  
The following is an example of setting the printer for 8 lines per inch.  
ESC, 8 - OKI Microline 83A command to set 8 LPI  
Printer Options Menu settings:  
H-Multiple-(`xxx’ X inches)-xxx=001  
K-Start Char-DENSITY=ESC  
L-Separator Char-DENSITY=CTL @  
M-Final Char-DENSITY=CTL @  
ESC,[,90, ,G - GENICOM 3000 command to set 8 LPI  
Printer Options Menu Settings:  
H-Multiple-(`xxx’ X inches)-xxx=720  
K-Start Char-DENSITY=ESC [  
L-Separator Char-DENSITY=space  
M-Final Char-DENSITY=G  
6.13 Verify Switch Settings  
To check the settings of the switches used for the terminal’s baud rate, data bits, parity and other  
selections, enter the letter J in response to the Main Menu. The Verify Switch Settings menu will then be  
displayed on your screen as in Figure 18.  
CURRENT:  
Application = SDLC/SNA 3274/76 Interactive  
VDU = ANSI STD; DEC VT100; Teletype 5410,5420; Televideo 970,960  
Keyboard = STANDARD  
Verify Switch Settings  
A-Exit  
B-Restart With New Switch Options  
SWITCH SETTINGS  
SW6 (NOs. 07-10)=E  
SW7 (NOs. 07-10)=F  
SW8 (NOs. 01-08)=FF  
SW9 (NOs. 01-08)=0B  
Figure 18  
49  
 
PROTOCOL CONVERTER MODEL A/S-4  
The Verify Switch Settings menu allows 2 operations as described below:  
A. Exit - By entering the letter A the A/S-4 will return to the Main Menu.  
B. Restart With New Switch Options - When a B is typed and he A/S-4 will start over, just like the  
power has been turned off and then on. When the A/S-4 goes through power up, all switches  
displayed in the menu will be read and serviced.  
The Verify Switch Settings menu will display any change in the switches in the menu. The change in the  
switch should be followed by the Restart command B to insure that the change has been acted upon.  
NOTE  
The Verify Switch Settings menu will be displayed when running with the A/S-4 PC  
card, but the switches have no effect on the program running in the PC card because  
there are no switches on the PC card, so the values displayed for the switches is actual  
data read from the PC memory.  
6.14 Reload Default Options  
By selecting item K from the main menu (Section 6.3), the operator obtains the screen shown in Figure  
19 which in turn can change all the options in the A/S-4 to their defaults. Entering any character other  
than a “Y” will return to the main menu without changing any options, if a “Y” is entered the A/S-4 will  
go through its power up routine as if the power to the unit was turned off and then on.  
Reload Default Options  
If sure type Y (ALL PAST WORK WILL BE LOST!)  
Figure 19  
Refer to section 8.4 of Batch operation for the A/S-4’s default options settings.  
50  
 
CHAPTER 7: Interactive Operation  
7. Interactive Operation  
The A/S-4 operating in the Interactive mode, emulates an IBM 3274/76 cluster controller with a single  
LU Type 2 terminal IBM 3278 and an IBM 3287 LU Type 1 or 3 printer. The VDU LU assigned by the H-  
Application Option menu is the terminal’s (IBM 3278) logical unit and the PRT LU is the printer’s (IBM  
3287) logical unit. With the combination of these two LUs the CRT operator can have a job being  
printed out on the printer while doing other interactive work with the terminal simultaneously.  
As described in Section 6.4 on the actual running of the A/S-4 after all menu items are selected the  
“WAITING FOR ACTIVE LU” message will be displayed on the terminal. After the LUs become active  
the operation of the unit is dependent on the SNA host it’s communicating with, so no further  
description of operation is needed.  
NOTE  
For the Interactive screen to be displayed correctly, the CRT must be selected to  
disable cursor auto wrap. If a character is in column 80, the cursor will not advance to  
the next line.  
51  
 
PROTOCOL CONVERTER MODEL A/S-4  
8. Batch Operation  
The A/S-4 operating in the Batch mode, emulates an IBM 3776/77 Model 3 and 4 multiple logical unit  
(MLU) work station with a console, printer, card reader/punch and exchange diskette attached. The  
A/S-4 supports two of the six possible logical units available for a MLU work station. The VDU LU is  
designated as the inbound (to host) logical unit and the PRT LU is the outbound (from host) LU. The  
VDU LU will reject data from the host for the printer, card reader or exchange diskette by sending a  
negative response to the function management header, which indicates the data is for any of the above  
devices. The host will then send the data to the PRT LU. This insures that at least one LU will be free to  
send jobs or console commands while receiving data from the host. Console data is the only data the  
VDU LU will accept while the PRT LU will receive host data from all devices.  
The following is the step by step procedure used by the A/S-4 after the “WAITING FOR ACTIVE LU”  
message is sent out for Batch operation. Refer to Section 6.4 for steps before ACTIVE LU message.  
1. With the “WAITING FOR ACTIVE LU” message displayed, entering any character other than  
an SO (X`0E’) or SI (X`0F’) will cause the main menu to appear again if SW9/6 is in the ON  
position (change options on power up). Entering of the SI (X`0F’) command will cause the  
status of the PU and LUs to be displayed as described in section 8.1. Receipt of an SO (X`0E’)  
followed by X number of characters will change the A/S-4’s options and cause it to start over  
from power up. Once one of the LU’s become active a new line status will be displayed.  
2. When one or both LUs become active the A/S-4 will send a clear screen command, display the  
current line status and try to do an Auto Logon if selected for the active LU. The Auto Logon  
message will be displayed if the Echo Input option is enabled. If no Auto Logon is selected  
and the host system does not auto-BIND the LUs, the console operator must logon both LUs  
before the application (e.g. JES2) can communicate with the work station. The device  
selection character (Section 8.2) must be selected for the inbound LU on one logon message  
and then set for the outbound LU on the next so both LUs are logged on to the application.  
3. When one or both LUs are bound up to an application (e.g. JES2) and receives a set data  
traffic command, the A/S-4 will display the current line status and send the Auto Signon if  
selected for the LU in LU-to-LU session. The Auto Signon message will be displayed if the  
Echo Input option = YES. Once the Auto Signon is sent, jobs and console commands can be  
sent and received from the host. For the description of inbound data see Section 8.1 and for  
outbound data refer to Section 8.2.  
52  
 
CHAPTER 8: Batch Operation  
8.1 Receiving Batch Data from the SNA host  
When SNA data is received from the host by the A/S-4, the data is sent to the VDU as follows:  
Start  
Special  
Control  
End of  
File  
VDU  
1
CMD  
Device  
2
On  
Off  
of File  
VDU  
1
3 STX  
4
5 Data  
6 ETX  
CMD  
Device  
7
1. VDU CMD or CRT lead in character is selected by C-VDU commands menu. This single or  
dual character command is not sent to the VDU if the Device ON command is selected for a  
control character (X`1F’ or less) or disabled by being set to a space.  
2. Device (Printer, Card, Disk) On is selected by C-VDU commands menu. This single or dual  
character command directs the received SNA data to the correct device; printer, card or disk.  
This command can also be disabled (turned off) by setting it to a space so that no Device On  
is sent. If the command is set to a printable character (X`21’ or greater) the VDU CMD will  
precede the Device On command.  
NOTE  
Console data is not preceded by a VDU CMD or a Device On character.  
3. Start of File (SOF) character is selected by H- Application Options menu. This single  
character command can be disabled (turned off) so that no Start of File character is sent.  
4. Special Control (SC) characters precede some types of data mentioned below:  
a. SOH ($01) character indicates that a Function Management Header-2 follows. The FMH-2  
data is sent to the VDU without converting the SNA EBCDIC data to ASCII (transparent  
mode) inserting DLE’s before ASCII control characters if needed. The VDU CMD and  
device selection are sent along with this message if selected.  
53  
 
PROTOCOL CONVERTER MODEL A/S-4  
b. SI ($0F) character precedes the SNA line status report of each logical unit. This line status  
is handled as console data so the VDU CMD and device selection are not sent along with  
this message. The line status is reported as follows:  
SOF  
STX  
SC  
0F  
1
3
2
3
3
4
EOF  
ETX  
CR  
LF  
LU,  
LU  
CR  
LF  
Character Number:  
1.  
2.  
3.  
4.  
0
1
3
7
($30)  
($31)  
($33)  
($37)  
Physical Unit (PU) not active  
PU active but inbound logical unit (LU) not active  
Inbound LU active but no LU-LU session active  
Inbound LU active and in session with another LU  
0
1
3
7
($30)  
($31)  
($33 )  
($37)  
PU not active  
PU active but outbound LU not active  
Outbound LU active but no LU-LU session active  
Outbound LU active and in session with another LU  
DW  
PU  
LU  
LL  
=
=
=
=
PU not active  
PU active  
Inbound LU active-can send logon or receive SSCP data  
Inbound LU in LU-LU session-can send or receive jobs  
DW  
PU  
LU  
LL  
=
=
=
=
PU not active  
PU active  
Outbound LU active-can send logon or receive SSCP data  
Outbound LU in LU-LU session-can send or receive jobs  
5. Normal EBCDIC data received from the SNA host will be converted into ASCII before being  
transmitted to the VDU. Transparent Data received from the SNA host will be passed to the  
VDU with no conversions, except when the character is less than a hexadecimal value of $20.  
The character would then be preceded by DLE ($10) and the character itself would be made  
ASCII printable by setting it’s two most significant bits. This addition of the DLE and making  
the character printable is only done if this option is selected in the Application Options.  
Example: Recvd - $1E = $10$DE - Xmitted  
6. End of File (EOF) character is selected by H-Application Options menu. This single character  
command can be disabled (turned off) so that no EOF character is sent.  
7. Device OFF is selected by C-VDU commands menu. This single or dual character command  
terminates the transmission of this device’s data. This command can also be disabled (turned  
off) by setting it to a space so that no Device Off command is sent. If the command is set to a  
printable character (X`21’ or greater) the VDU CMD will precede the Device OFF command  
or if the Device OFF is set to a control character no VDU CMD will precede it.  
NOTE  
Console data is not terminated by a VDU CMD or a Device OFF character.  
54  
 
CHAPTER 8: Batch Operation  
8.2 Transmitting Batch Data to the SNA Host  
To send data to the SNA computer, the data from the VDU should look like this:  
Device  
Selection  
Start  
of  
File  
or  
End  
of  
File  
Special  
Control  
1 STX  
2
3 Data  
4 ETX  
1. Start of File (SOF) character is selected by H Application Options menu. This single  
character command can be disabled (turned off) so that no SOF character needs to be  
received before handling the incoming data from the VDU.  
2. a Device selection character indicates which device (card, disk, printer or console) the data  
is from, if the data is in transparent form and which Logical Unit (LU) should transmit  
the data to the SNA host. This character is not sent to the SNA host. The following is  
the Device Selection character with its assigned bits:  
Bit  
7
6
5
1
4
1
3
2
Y
1
X
0
X
1 = Outbound LU data  
0 = Inbound LU data  
1 = Transparent data  
0 = Normal data  
XX = 00 - Console Data  
01 - Disk Data  
10 - Card Data  
11 - Printer Data  
Parity bit can be 0 or 1  
Y = Do Not Care  
Example: Device selection character of “2”(X`32’) would cause the data to transmit to the SNA host as  
normal card data by the inbound (VDU) LU.  
2.b Special Control (SC) character precedes some types of data mentioned below:  
1) SO(X`0E’) character readies the A/S-4 to receive new options following the SO  
character. For this to work, the A/S-4 and the VDU must be set for a character length  
of 8-data bits with no parity. The contents of this string of options is described later.  
The SO (X`0E’) character does not need to be preceded by the Start of File character  
or followed by an End of File character.  
55  
 
PROTOCOL CONVERTER MODEL A/S-4  
2) SI (X`0F’) character asks the A/S-4 for the SNA line status of each Logical Unit. The  
response to the SI is described in the transmission of the SI character as a special control  
character. Any data following the SI character will be thrown away until a Start of File is  
received. The SI (X`0F’) character does not need to be preceded by the Start of File  
character or followed by an End of File character.  
3. Normal ASCII data received from the VDU will be converted into EBCDIC before being  
transmitted to the SNA host computer. This received data will be checked for end of record  
characters (CR, LF, CRLF and RS) and trailing spaces. Trailing spaces in a record will be  
truncated. If no end of record character is found after receiving eighty characters, the A/S-4  
will insert an end of record character and truncate any trailing blanks before transmitting the  
record to the SNA host. Transparent data received from the VDU will be passed to the SNA  
host with no changes, except when the Precede TRN Ctl Chars with DLE option is selected  
and a DLE followed by another character is received. When this occurs the DLE character is  
thrown away and the following character’s two most significant bits will be changed to zero’s.  
For transparent data to work correctly without the DLE option enabled, both the VDU and  
the A/S-4 must be set for 8-data bits with no parity and XON/XOFF throttle turned off.  
4. End of File (EOF) character is selected by H-Application Options menu. This single character  
command terminates the transmission of the VDU data. This command can also be disabled  
(turned off) so that no EOF character is sent, but if disabled all data received may not be sent  
to the host.  
8.3 Batch Printer Operation  
Data received from the SNA host directed to the printer device by the use of the function management  
header - 1 (LU Type 1) or by the write control character (WCC) (LU type 3) is handled differently than  
card, console or disk data. This printer data is inspected for SNA Character String (SCS) control codes,  
space characters and transparent data indication. Most of the SCS codes are single character commands  
(e.g. NL, BS, LF) which are converted into their ASCII equivalent (see appendix C), but a few SCS  
commands are two or more characters long which are handled as described below:  
1. Set Horizontal Format (SHF) command defines the maximum presentation position (MPP),  
the left margin (LM), right margin (RM) and up to six horizontal tab stops for a page of print.  
This command is used internally by the A/S-4. The printer may receive new operating  
conditions depending on printer options selected. Refer to Section 6.12.1, Programmable  
Printer Options for details.  
2. Set Vertical Format (SVF) command defines the maximum presentation line (MPL), top  
margin (TM), bottom margin (BM) and up to six vertical tab stops for a page of print. This  
command is used internally by the A/S-4.The printer may receive new operating settings  
depending on printer options selected. Refer to Section 6.12.1 for details.  
3. Set Line Density (SLD) defines the distance to be moved for a single line (vertical spacing), as  
in NL or LF. This command is used internally by the A/S-4, the printer may receive a new  
lines per inch (LPI) setting depending on printer selections. See Section 6.12.1 for details.  
4. Vertical Channel Select (VCS) selects one of 12 vertical channels to control vertical formatting  
of the page. This two character command causes a line feed (LF) to be sent to the printer.  
56  
 
CHAPTER 8: Batch Operation  
When sending data to the printer each character is inspected and then sent if needed. A column count  
is kept to determine the position of the printer’s print head which is compared to the selected column  
width of the paper. If a space character is found, it is not sent right away to the printer. The following  
characters are checked and if no other character other than a space is present in the line, a CR LF or CR  
LF LF (Double spacing) is sent to the printer disregarding the received spaces.  
The SNA host can send transparent data to the printer. Most of the time this EBCDIC data is converted  
into ASCII because transparence is generated by the application (e.g. JES, POWER) which looks for a  
character less than an EBCDIC space (x’40’) in value, if this character is found, the print line is sent in  
transparent form. Usually the character causing this is a null (X’00’) inserted in a JOB name or ROOM  
number because no value was assigned. If the actual SNA data received from the host needs to be  
printed, the first two data characters must be a transparent indicator (TRN X ‘35’) followed by the  
number of transparent characters in hexadecimal. Example message received from SNA host:  
TRN # TRN # data —> 1st TRN # generated by JES 2nd TRN # generated by program  
The printer can be connected to the A/S-4 in many ways as mentioned below:  
1. Printer directly connected to the terminal port with a single cable. In this configuration no  
VDU is present. The host must do an Auto-BIND to connect the A/S-4 to he application (e.g.  
JES2, CICS) or use the Auto Logon function of the unit. With a single device, only one LU is  
needed but both may be used. Normally the VDU LU is the LU used when running with a  
single LU. The host must start the print job since no VDU is present. Hardware throttle  
(must have CTS before sending data) or software throttle (XON/OFF protocol) may be used  
to control the rate of data going to the printer.  
2. Printer attached to a VDU’s auxiliary/printer port where the VDU is directly connected to the  
terminal port of the A/S-4. This mode of operation allows the VDU to run at a faster baud  
rate than it’s attached printer. Having two LUs active, one for inbound (to host) data and an  
outbound (from host) LU will increase the speed of the printer and also allow the VDU to  
start or stop jobs, interrupt the printer or allow a card device to send a job in to the host while  
a job is being printed. Software or hardware throttle is supported.  
3. Printer attached with the special “Y” VDU/Printer cable. The VDU and printer must run at  
the same baud rate in this setup and hardware throttle is the only way to control the flow of  
data to the printer (XON/OFF not supported). When using the “Y” cable, the VDU will be  
able to receive data while the printer is off-line, replacing paper or throttling. This  
configuration is very similar to item 2 with two LUs active which allows the VDU to control the  
printer. In this mode the VDU (PC or computer) can go off-line and run applications while  
the printer is receiving data from the SNA host, as long as the VDU supplies Data Terminal  
Ready (DTR) pin 20 to the A/S-4.  
57  
 
PROTOCOL CONVERTER MODEL A/S-4  
8.4 Batch Default Options  
The A/S-4 has the capability of loading all it’s Batch options from the VDU (computer) without going  
through any menus. This is done by receiving the shift out (X’0E;) character followed by the options  
selected in hexadecimal form. The VDU and A/S-4 must be set to receive and transmit an 8-data bit  
word with no parity, so all 8 bits of the hexadecimal characters are received. Once all the new Batch  
default options are loaded, the A/S-4 is then automatically set to run in the Batch 3776/77 mode. Below  
is the Batch options with its bit location.  
BYTE  
1
DEFAULT  
17  
*** SDLC (MODEM) PORT OPTIONS ***  
BIT 7 -  
6 -  
5 & 4 - 00=ASYNC, 01=SYNC  
3 THRU 0 = BAUD RATE  
0101 = 300 1100 = 4800  
0110 = 600 1110 = 9600  
0111 = 1200 1111 = 19.2K  
1010 = 2400  
2
3
0C  
00  
BIT 5 & 4 - STOP BITS: 00=SYNC, 01=1, 10=1.5, 11=2  
3 & 2 - WORD LENGTH: 10=7, 11=8  
1 & 0 - PARITY: X0=NONE, 01=ODD, 11=EVEN  
BIT 6 & 5 - XON/OFF: 00=OFF, 01=FROM VDU, 10=TO VDU,  
11=BOTH  
1 & 0 - CHAR CODE: 00=EBCDIC, 01=ASCII  
4
F7  
80  
02  
01  
30  
0F  
FF  
SDLC PU ADDRESS  
5
CUSTOMER OPTIONS A  
CUSTOMER OPTIONS B  
PROTOCOL, 00=3274/76, 01=3776/66  
SDLC 3770 XID  
6
7
8
9
10  
*** ASYNC (TERMINAL) PORT OPTIONS ***  
*** INBOUND (VDU) LU ***  
11  
12  
07  
ASYNC BAUD RATE (1200 BAUD) SEE BYTE 1  
0C  
WORD LENGTH: 8 - DATA BITS, NO PARITY SEE  
BYTE 2  
13  
01  
CHAR OPTION: XON/OFF=OFF, ASCII CHARACTERS  
58  
 
CHAPTER 8: Batch Operation  
BYTE  
14  
DEFAULT (continued)  
01  
LU ADDRESS  
CUSTOMER OPTION A  
15  
81  
BIT 7 - TERMINATE MESSAGE TO VDU ON: 1-END OF CHAIN  
0-END OF BRACKET  
6 - SEND FMH-2 TO VDU  
5 -  
4 -  
3 -  
2 -  
1 - 1-1ST CHAR FROM VDU DEVICE INDICATOR  
0-CARD ONLY INPUT FROM VDU  
0 - ECHO INPUT TO VDU  
CUSTOMER OPTIONS B  
16  
17  
21  
08  
BIT 7 -  
6 -  
5 - USE DLE (X’10’) CHAR TO PRECEDE TRANSPARENT  
CONTROL CHARS  
4 -  
3 -  
2 -  
1 & 0 - LU TYPE (1, 2, OR 3)  
PROTOCOL, 08=ASYNC ASCII  
*** OUTBOUND (PRT) LU ***  
ASYNC BAUD RATE (1200 BAUD)  
18  
19  
20  
21  
07  
0C  
01  
02  
WORD LENGTH: 8-DATA BITS. NO PARITY  
CHAR OPTION: XON/OFF=OFF, ASCII CHARACTERS  
LU ADDRESS  
CUSTOMER OPTION A  
22  
80  
BIT 7 - TERMINATE MESSAGE TO PRT ON: 1-END OF CHAIN  
0-END OF BRACKET  
6 -  
5 -  
4 -  
3 -  
2 -  
1 -  
0 -  
CUSTOMER OPTION B  
BIT 7 -  
6 -  
5 -  
4 -  
23  
0
59  
 
PROTOCOL CONVERTER MODEL A/S-4  
BYTE  
DEFAULT (continued)  
3 -  
2 -  
1 & 0 - LU TYPE (1, 2, OR 3)  
24  
08  
PROTOCOL, 08=ASYNC ASCII  
*** INBOUND LU XFR ***  
CHAR OPTION (NOT USED)  
25  
26  
00  
03  
LU ADDRESS (NOT USED)  
CUSTOMER OPTION C  
27  
00  
BIT 7 -  
6 -  
5 -  
4 -  
3 -  
2 -  
1 -  
0 -  
CUSTOMER OPTION D  
28  
01  
BIT 7 -  
6 -  
5 -  
4 -  
3 -  
2 -  
1 & 0 - LU TYPE (NOT USED)  
***OUTBOUND LU XFR ***  
CHAR OPTION (NOT USED)  
29  
30  
00  
04  
LU ADDRESS (NOT USED)  
CUSTOMER OPTION C  
31  
00  
BIT 7 -  
6 -  
5 -  
4 -  
3 -  
2 -  
1 -  
0 -  
CUSTOMER OPTION D  
BIT 7 -  
6 -  
5 -  
4 -  
32  
01  
60  
 
CHAPTER 8: Batch Operation  
BYTE  
DEFAULT (continued)  
3 -  
2 -  
1 & 0 - LU TYPE (NOT USED)  
*** APPLICATION OPTIONS ***  
33  
35  
C553  
C26B  
DEFAULT CRT = ASCII STANDARD, VT100  
C513 = IBM 3101  
C5D3 = LEAR SIEGLER ADM 3A  
C593 = TELEVIDEO 910 THRU 950  
C613 = IBM PC 3270  
DEFAULT KYBD = STANDARD  
C2F3 = IBM PC 3270  
C403 = IBM 3101  
C37B = ADM 1178  
C48B = PNS  
37  
38  
39  
02  
03  
START OF FILE CHARACTER  
END OF FILE CHARACTER  
VDU/PRT Auto Logon Msg (82 CHARACTERS)  
4C,4F,47,...31,33,2C,2C,2C,1C,4C,31,36,33,41,43,30,30,1C,20,29,20,..A0  
L O G 1 3 , , , CTL\L 1 6 3 A C 0 0 CTL\ ) END  
121  
PRT Auto Logon Field (10 CHARACTERS)  
LAST CHAR NEGATIVE  
4C,31,36,33,41,43,30,B1,00,00  
L 1 6 3 A C 0 1  
131  
VDU/PRT Auto Signon Msg (80 CHARACTERS)  
2F,2A,53,49,47,4E,4F,4E,20,20,20...A0 LAST CHAR NEGATIVE  
/ * S I G N O N  
END  
BYTE  
DEFAULT (continued)  
*** PRINTER OPTIONS ***  
211  
212  
213  
84  
42  
06  
Column Width =132  
Lines Per Page = 066  
BIT 7 - 1=Mono Case chars 0=Dual Case chars  
6 - 1=Double Spacing 0=Single Spacing  
5 THRU 0 - Lines Per Inch=006  
214  
215  
216  
20  
20  
20  
1st Start Char-FORMS  
2nd Start Char-FORMS  
1st Start Char-DENSITY  
61  
 
PROTOCOL CONVERTER MODEL A/S-4  
BYTE  
217  
218  
220  
221  
222  
223  
DEFAULT (continued)  
20  
2nd Start Char-DENSITY  
20,20  
00  
Multiple character  
Separator Char (FORMS)  
Separator Char-DENSITY  
Final Char (FORMS)  
00  
00  
00  
Final Char-DENSITY  
*** END OF OPTIONS ***  
62  
 
CHAPTER 9: Battery RAM  
9. Battery RAM  
All operating parameters selected from the configuration menus are saved in battery backed-up RAM  
(Random Access Memory). Therefore, if AC power to the A/S-4 is interrupted, it is unnecessary to  
reenter the parameters previously selected. If the unit is powered off for seven days or more, the  
parameters will probably be lost.  
63  
 
PROTOCOL CONVERTER MODEL A/S-4  
10. Maintenance  
The A/S-4 is designed to perform all of its tasks with maintenance free operation. You may prolong the  
life of the unit by cleaning any dust build-up in the unit. Dust may be removed  
by blowing and/or brushing with a long bristle paint brush.  
1. Check to see if the power indicator light is ON: Make sure the unit is plugged in.  
2. Check for loose cables and reconnect with retaining screws.  
3. Check equipment connected to A/S-4; Modems, CPU, Terminals, and etc. for proper  
operation.  
4. Restart unit after the above has been checked by unplugging A/S-4 and plugging it back in  
again. Now check for proper operation.  
64  
 
CHAPTER 11: Software Upgrade and EPROM Replacement  
11. Software Upgrade and  
EPROM Replacement  
Each EPROM has a label affixed to the top containing an address and the current data of the software in  
the IC. To replace the old EPROM with the new EPROM, follow the procedure below:  
1. Unplug the A/S-4 and remove the cover by removing the 4 cover screws on the side and lifting  
the cover upwards.  
2. Find the old EPROM on the electronic board. It is the only chip with a label affixed to it.  
3. Note the little notch at the end of the EPROM is toward the front of the box. The new  
EPROMs, when inserted, must also have the notch toward the front of the box.  
4. Remove the EPROM by taking a flat head screwdriver a pocket knife, or another flat edged  
instrument and inserting the flat edge between the ERPOM and the socket holding the  
EPROM at the two ends where there are no metal legs. Pry one end up just a little and then  
pry the other end up just a little. Continue prying both ends up just a little in a rocking back  
and forth motion until the EPROM becomes free of the socket.  
5. Insert the new EPROM by aligning one row of metal legs first with one side of the socket.  
Make sure this row is firmly in the socket but not pushed down in the socket. Now align the  
other row of legs in the socket pushing the legs firmly in place but not down in the socket.  
Now if all legs are aligned, push the EPROM into the socket slowly watching to see if any legs  
bend. If any leg starts to bend or does bend, remove the EPROM as in Step 4 above and  
straighten the leg as much as possible by hand or with pliers, if available. Try inserting the  
EPROM again. If a leg continues to bend or breaks off, do not throw the EPROM away,  
return it to the factory.  
6. With cover still off, turn the box on and check for the power up attribute message on the  
terminal device. If the power up message is displayed continue to step 8.  
7. If not, check for any bent legs or any leg that did not go into the socket. Also make sure the  
EPROM notch is toward the front of the box. Correct any EPROM problems found. If the  
EPROMs cannot be made to work (display the attribute message), return the A/S-4 and  
EPROMs to the address on the title page for repair. Please call for a Return Authorization  
Number.  
8. Replace the cover of the A/S-4 and insert and tighten the 4 cover screws.  
65  
 
PROTOCOL CONVERTER MODEL A/S-4  
12. System/Line Gen for Batch  
The following is a VTAM/NCP/JES2 line gen for a 3776 model 3 or 4. For more information on specific  
parameters, refer to the appropriate IBM manuals.  
IBM 3770 SNA Installation Guide - GC30-3064  
Component Description for the IBM 3776 and 3777 Communication  
Terminals - GA27-3145  
VTAM Generation Manuals - MANY  
NCP Generation Manuals - MANY  
NCP & VTAM Parameters: Most values are defaults  
——————- HOST MACRO ——————-  
UNITSZ = 384  
VTAM’S data buffer size  
————— (LINE (GROUP) MACRO ————-  
DIAL = NO  
No for leased line or yes for dial-up A/S-4 operation  
LNCTL = SDLC  
For SDLC line  
TYPE = NCP  
For NCP  
(3) CLOCKING = EXT or INT  
(2) DISCNT = NO or YES  
DUPLEX = FULL or HALF  
INTRPI = 2  
Modem or A/S-4 supplies clocks  
If switched SDLC line should drop if no active LU sessions  
Full or half duplex line  
(*) NEWSYNC = NO  
(3) NRZI = YES or NO  
PAUSE = 2  
No new sync on modem  
NRZI coding can be used  
Time between xmitting operation (poll) 200 ms  
Polled Line  
POLLED = YES  
REPLYTO = 1  
Time between retries of operation (polls) if not answered 1  
second, maybe 2 or 3  
RETRIES = (1,2,5)  
SERVLIM = 4  
Retry 1, wait 2 seconds, do it 5 times  
Number of regular Scans of NCP order table before a special  
scan (PU not responding to SNRM)  
SPEED = 4800  
Line Speed (300 to 19.2K baud)  
66  
 
CHAPTER 12: System/Line Gen for Batch  
TRANSFER = 7  
MODETAB = INSTINCLM  
SSCPFM = USSSCS  
VPACING = 2  
Name of table used by VTAM for line bind parameters  
3770 RJE log-on is a character-coded log-on  
—————- PU MACRO —————-  
ADDR = C1  
Line hardware hex address value  
IRETRY = YES  
Retry poll operation on idle PU, maybe no  
Maximum amount of (PIU) data NCP will xmit to the  
MAXDATA = 265 or 521  
terminal  
MAXOUT = 7 if MAXDATA = 265  
4 if MAXDATA = 521  
Maximum number of data blocks (PIUs)  
that NCP can xmit to PU before requesting an SDLC data link  
acknowledgement  
MODETAB = RJEMODE  
Name of table used by VTAM for PU bind parameters  
PASSLIM = 7 if MAXDATA = 265  
4 if MAXDATA = 521  
Maximum number of PIUs that NCP can  
xmit at one time  
PUTYPE = 2  
Physical Unit type 2  
RETRIES = (1,3,5)  
SSCPFM = USSSCS  
Retry 1, wait 3 seconds, do it 5 times  
3770 RJE logon is a character-coded logon  
DLOGMOD = BUF256 if MAXDATA = 265 Logmode entry used  
BUF512 if MAXDATA = 521  
ANS = STOP  
Stop on automatic network shutdown, maybe CONTINUE  
—————- LU MACRO —————-  
BATCH = YES  
BUFFLIM = 2  
Informs NCP that this is a BATCH LU  
The product determines how many PPBUF elements VTAM  
will receive from a LU until VTAM can transfer the data  
to the application  
LOCADDR = 1 to 1  
(1) PACING = 3  
Local address of this LU on the PU A/S-4 supports  
only one LU  
NCP to send 3 request units (RUs) before waiting for pacing  
response  
67  
 
PROTOCOL CONVERTER MODEL A/S-4  
USSTAB = RJEINCDT  
Table used by VTAM to interpret user logons  
VTAM sends 6 RUs to NCP before response  
LU comes up active, can be INACTIVE  
VPACING = 6  
ISTATUS = ACTIVE  
——————- APPLICATION VTAM PARAMETERS ——————-  
Parameter used with BUFFLIM  
BUFFACT = 10  
——————- JESX Parameters ——————  
TERMINAL (3776)  
RMTnnn  
SNA Remote Terminal  
LUTYPE 1  
Logical Unit type 1 use SCS data  
BUFFSIZE = 256 if MAXDATA = 265  
512 if MAXDATA = 521  
Buffer size of terminal LU  
NOCMPCT  
Compaction may not be used on this terminal  
COMP or NOCOMP  
Blank and multiple character compression may  
or may not be used  
CONDEST = nnn  
Console responses are to be directed to another terminal  
CONSOLE or NOCON  
Device other than a console printer may or may not receive  
console messages  
(*) DISCINTV = 0  
LINE = nnn  
Terminal disconnect on idle condition, off  
Logical connection between JESX and the terminal  
Number of logical printers at terminal  
Number of logical card punches at terminal  
Number of logical card readers at terminal  
Line password  
NUMPR = 1  
NUMPU = 1  
NUMRD = 1  
PASSWORD = cccccccc  
ROUTECDE = nn  
Specify that input from this terminal will have the return desti  
nation specified  
SETUPMSG  
SETUPINF  
Message telling operator to mount special forms  
Message telling operator to mount special forms is displayed  
at his terminal and not at host console, maybe SETUPACT  
to display message at host also  
68  
 
CHAPTER 12: System/Line Gen for Batch  
WAITIME = 01  
Number of seconds between completion of printing before  
JES will initialize print of the next output data set  
—————— PRINTER ATTACHED TO 3776 ——————-  
Rnnn.PR1  
SNA Remote Printer one  
OPERATOR  
Remote terminal operator uses a $DF JES command to check  
the forms queue and than uses a $TRPn, F=form, Q=class  
command to set the printer for special forms  
CCTL  
Carriage control chars are in the data stream xmitted  
to printer  
CKPTLNS = 0  
Maximum number of lines in a logical page  
CKPTPGS = 0  
checkpoint  
Number of logical pages to be printed before each  
is taken. Chain size is the logical page number  
CLASS = C(1)...C(n)  
(*) CMPCT  
COMP  
Output class used to group all output of a particular type  
Specifies that printer has compaction capabilities  
Specifies that printer has compression/expansion capabilities  
Default compaction table number  
COMPACT = n  
START  
Printer is active  
NOFCBLD  
Printer cannot recv forms control buffer (FCB) images  
from host  
LRECL = 132  
SEP  
Logical record length of data xmitted to printer form host  
3776 has a separate console than printer  
Not used for SNA devices  
NOSUSPND  
PRWIDTH = 132  
ROUTECDE = nnn  
SELECT = PRINT1  
UCS = cccccccc  
Maximum number of characters to be printed on one line  
Route code for printer  
This device is a printer with a sub-address of zero  
Not used for SNA devices  
69  
 
PROTOCOL CONVERTER MODEL A/S-4  
—————— PUNCH ATTACHED TO 3776 ——————-  
Rnnn.PU1  
SNA Remote Punch one  
OPERATOR  
CCTL  
CKPTLNS = 100  
CKPTPGS = 10  
CLASS = C(1)...C(n)  
Number of cards to be punched per logical page  
(*) CMPCT  
COMP  
COMPACT = n  
START  
Punch is active  
NOSEP  
SELECT = PUNCH1  
Device is a card punch with a sub-address of zero  
—————— READER ATTACHED TO 3776 ——————-  
SNA Remote Card Reader one  
Rnnn.RD1  
CLASS = C(1)...C(n)  
MSGCLASS = C(n)  
NOHOLD  
NOSEP  
START  
Card reader active  
PRDEST =  
PRIOINC =  
PRIOLIM = 1  
PRLCL  
PRNODE  
PRRMT  
70  
 
CHAPTER 12: System/Line Gen for Batch  
PUDEST = 0  
PULCL  
PUNODE  
XEONODE =  
——————- LINE ——————-  
LINEnnn  
Line number  
ADISCON  
CODEA  
COMP  
EBCDIC  
EBCDIC character code  
IFACEA  
LOWSPEED  
PASSWORD = cccccccc  
TRANSP  
Line supports transparent data  
UNIT = SNA  
——————- JES2 SYSTEM-WIDE PARAMETERS ———————  
Name used in logon and in VTAM configuration list  
APPLID = JES2  
(*) COMPACT = n,n  
PASSWORD = cccccccc  
&MAXSESS = 1  
compaction tables  
VTAM password for JESX  
Number of active sessions at any point in time  
JESX I/O buffer count  
&NUMBUFF = nnn  
&NUMCMBS = nnn  
&NUMJOES = nnn  
&NUMLNES = nnn  
Number of JESX Console Buffers  
Number of Job Output Elements  
Number of Data Communication Lines should equal the  
largest LINEnnn  
&NUMRJE = nnn  
Number of Remote Job Definitions should equal the largest  
terminal ID number RMTnnn  
71  
 
PROTOCOL CONVERTER MODEL A/S-4  
&NUMTPBF = nnn  
Number of JESX Data Communications Buffers  
&PRTRANS = YES  
Print Line Translation Option, looks for chars less than X ‘40’  
and if so sends data as transparent  
* Option not supported  
(1) Option determined by max RU size. A/S-4 availablebuffer size = 2100 characters  
(2) Option is available but not installed  
(3) Option selected by A/S-4 switch settings  
The following is a copy of the suggested LOGMODE table for use by the A/S-4:  
RJEMODE  
BATCH  
MODETAB  
MODEENT LOGMODE=BATCH,FMPROF=X’03’,TSPROF=X’03’  
PRIPROT=X’A3’,SECPROT=X’A1’,COMPROT=X’7080’  
MLU1  
MODEENT LOGMODE=MLU1,FMPROF=X’03’,TSPROF=X’03’,  
PSNDPAC=2,SRCVPAC=1,PRIPROT=X’A8’,SECPROT=X’A1’,COMPROT=X’7080’  
MLU2  
MODEENT LOGMODE=MLU2,FMPROF=X’03’,TSPROF=X’03’,  
PSNDPAC=4,SRCVPAC=2, PRIPROT=X’A3’SECPROT=X’A1’,COMPROT=X’7080’  
MLU3  
MODEENT LOGMODE=MLU3,FMPROF=X’03’,TSPROF=X’03’,  
PSNDPAC=6,SRCVPAC=3, PRIPROT=X’A3’,SECPROT=X’A1’,COMPROT=X’7080’  
INTERACT  
NOCOMP  
COMP  
MODEENT LOGMODE=INTERACT,FMPROF=X’03’,TSPROF=X’03’,  
PRIPROT=X’B1’,SECPROT=X’A0’,COMPROT=X’3040’  
MODEENT LOGMODE=NOCOMP,FMPROF=X’03’,TSPROF=X’03’,  
PRIPROT=X’A1’,SECPROT=X’A1’,COMPROT=X’7080’  
MODEENT LOGMODE=COMP,FMPROF=X’03’,TSPROF=X’03’,  
PRIPROT=X’A3’,SECPROT=X’A1’,COMPROT=X’7080’  
BUF512  
BUF256  
COMPACT  
MODEENT LOGMODE=BUF512,FMPROF=X’03’,TSPROF=X’03’,  
RUSIZES=X’8686’, PRIPROT=X’A3’,SECPROT=X’A3’,COMPROT=X’7080’  
MODEENT LOGMODE=BUF256,FMPROF=X’03’,TSPROF=X’03’,  
RUSIZES=X’8585’, PRIPROT=X’A3’,SECPROT=X’A3’,COMPROT=X’7080’  
MODEENT LOGMODE=COMPACT,FMPROF=X’03’,TSPROF=X’03’,  
RUSIZES=X’8585’, PSERVIC=X’01106000F100808000010040’,  
PRIPROT=X’A3’,SECPROT=X’A1’,COMPROT=X’7080’  
MODEEND  
END  
72  
 
CHAPTER 12: System/Line Gen for Batch  
The following is a copy of the suggested USSTAB table for use by the A/S-4.  
RJEINCDT  
LOG  
USSTAB  
USSCMD CMD=LOGON,REP=LOGON,FORMAT=BAL  
USSPARM PARM=P1,REP=APPLID  
USSPARM PARM=P2,REP=LOGMODE  
USSPARM PARM=P3,REP=DATA  
SIGNON  
RMT101  
RMT102  
RMT103  
LOGOFF  
EOD  
USSCMD CMD=SIGNON,REP=LOGON,FORMAT=BAL  
USSPARM PARM=APPLID,DEFAULT=JES2  
USSPARM PARM=LOGMODE,DEFAULT=BUF512  
USSPARM PARM=USER,REP=DATA  
USSCMD CMD=RMT101,REP=LOGON,FORMAT=BAL  
USSPARM PARM-APPLID,DEFAULT=JES2  
USSPARM PARM=LOGMODE,DEFAULT=BUF512  
USSPARM PARM=DATA,REP=RMT101  
USS CMD=RMT102,REP=LOGON,FORMAT=BAL  
USSPARM PARM-APPLID,DEFAULT=JES2  
USSPARM PARM=LOGMODE,DEFAULT=BATCH  
USSPARM PARM=DATA,REP=RMT102  
USSCMD CMD=RMT103,REP=LOGON,FORMAT=BAL  
USSPARM PARM=APPLID,DEFAULT=JES2  
USSPARM PARM=LOGMODE,DEFAULT=MOCOMP  
USSPARM PARM=DATA,REP=RMT103  
USSCMD CMD=LOGOFF,FORMAT=BAL  
USSPARM PARM=APPLID  
USSPARM PARM=TYPE,DEFAULT=COMD  
USSPARM PARM=HOLD,DEFAULT=YES  
USSCMD CMD=EOD,FORMAT=BAL  
USSPARM PARM=APPLID  
USSPARM PARM=TYPE,DEFAULT=UNCOND  
USSPARM PARM=HOLD,DEFAULT=NO  
SIGNOFF  
USSCMD CMD=SIGNOFF,FORMAT=BAL  
USSPARM PARM=APPLID  
USSPARM PARM=TYPE,DEFAULT=COND  
USSPARM PARM=HOLD,DEFAULT=YES  
USSEND  
END  
73  
 
PROTOCOL CONVERTER MODEL A/S-4  
13. Troubleshooting Problems and  
Odd Installation Problems  
Listed below are some of the common problems found with installation and operation of the A/S-4 unit.  
Find the problem you are experiencing and try the remedies listed to fix the problem.  
PROBLEM  
SYMPTOM  
POSSIBLE REMEDIES  
1. No Power  
Power light on front of  
A/S-4 is OFF  
a. check wall power out-let for proper  
operation.  
b. Check to make sure the power  
transformer for the A/S-4 is  
plugged into the wall and into the  
unit all the way.  
2. No power up  
message  
TCTS light is off,on  
front oF A/S-4  
a. A/S-4 Switches SW2, SW3  
and SW6 for terminal port  
are not set correctly, refer to  
Section 4 in manual  
b. Terminal device does not supply  
DTR (if modem device is hooked to  
terminal port, it does not supply DSR).  
Turn on SW6/4 so A/S-4 unit will  
supply DTR (if modem device turn  
on SW6/5 so A/S-4 unit will supply  
DSR).  
TCTS light is on and  
TTX light does not  
blink when power is  
applied to the A/S-4  
unit  
a. Speed detect option is on,  
type “S” to get power up message.  
b. Typing “S” for speed option still  
does not give power up message.  
Baud rate cannot be matched by speed  
detect option so set up switches on  
A/S-4 to match terminal baud rate  
(refer to Section 4.1).  
74  
 
CHAPTER 13: Troubleshooting Problems and Odd Installation Problems  
PROBLEM  
SYMPTOM  
POSSIBLE REMEDIES  
TCTS light is on and  
TTX light does blink  
when power is applied  
to the A/S-4  
a. Baud rate of A/S-4  
does not match terminal  
baud rate. Check baud  
rate switches, refer  
to Section 4.1.  
b. Switches SW3/1,2,3 and  
4 are not set correctly,, refer to  
Section 4.1 and 4.2.  
a. Baud rate of A/S-4  
does not match terminal  
baud rate. Check baud  
rate switches, refer  
3. Power up message  
has some incorrect  
letters or just  
garbage letters  
displayed  
to Section 4.1.  
b. Parity and word length  
of A/S-4 and terminal  
do not match. Check  
option switches, refer  
to Section 4.5.  
4. Receive power up  
message on terminal  
but typing home or  
space bar will not  
TCD light on front of  
the A/S-4 is off  
a. A/S-4 switches SW2,  
SW3 and SW6 for terminal  
port not set correctly,  
refer to Section 4 in  
manual.  
display main menu  
b. Terminal device does  
not supply DTR (if modem  
device is hooked to  
terminal port, it does  
not supply DSR). Turn  
on SW6/4 so A/S-4  
unit will supply DTR.  
(If modem device turn  
on SW6/5 so A/S-4  
unit will supply DSR).  
a. Switches SW3/1,2,3 and  
4 are not set correctly,  
refer to Section 4.1  
and 4.2.  
TCD light is on, on the  
front of the A/S-4  
and the TRX light does  
not flash when a key is  
typed on the terminal.  
TCD light is on on the  
front of the A/S-4  
and the TRX light does  
flash when a key is  
typed on the terminal.  
a. Switches SW2/8 and  
SW6/1, 2 and 3 are  
set incorrectly, refer  
to Section 4.1 and 4.2.  
75  
 
PROTOCOL CONVERTER MODEL A/S-4  
Appendix A: 3274 SNA  
Communication Operations  
This appendix is intended to give a VDU operator the basic description of the System Network  
Architecture (SNA) for a 3278 CRT (or like device) in the area of remote communications.  
First the 3278 CRT is connected to a 3274 controller that allows 32 3278 CRT’s to communicate to an  
IBM mainframe computer. SNA calls the 3274 controller a PU (physical unit) and the 3278 CRT a LU  
(logical unit).  
Communications with the host computer and the CRT basically follow the following steps.  
1. The line is activated - This means a phone line is established between the host computer and  
the 3274 controller. This maybe done by dialing a phone for dialup applications or having a  
host computer operator connect a leased phone line.  
2. The PU is activated - The host sends the first message down the phone line to the 3274  
controller (PU) to tell it to start communications. The 3274 controller then tells the host  
when it is ready to start.  
3. The LUs are activated - The host now tells all the 3278 CRTs (LUs) to start communications.  
The CRTs then tell the host when they are ready to start.  
4. SSCP (System Services Control Point) sends a message to the LU - The CRT at this point  
receives an enter request logon message from SSCP if the host system is GENed to send a  
SSCP message. A GEN is how the host system operators set up different CRT options. At this  
point the CRT is considered to be in a SSCP to LU session. Session means that two devices are  
talking with each other.  
5. The CRT operator may now enter a request logon message for an application - This allows the  
operator to request a logon to different applications like CICs, IMS or TSO on any available  
system. (example; Test System A or B or a Production System). If the CRT will always be  
assigned to one application, the host system may be GENed (optioned) to automatically  
request an application logon, in which case this setup does not need to be performed by the  
VDU operator.  
6. The system now BINDs the CRT to the application - This establishes communication between  
the CRT and the application. The 3274 controller will usually clear the CRT screen when this  
happens. The CRT is now considered to be in a LU to LU session.  
7. The application sends a welcome or signon application message to the CRT - This now allows  
the operator to run his application or transactions. While communicating with the  
application, it is usually on a demand-response basis. The operator enters data or answers a  
question and the host sends back the information or more questions. This proceeds until the  
operator has completed the assignment.  
76  
 
APPENDIX A: 3274 SNA Communication Operations  
NOTE  
Some applications may not send a welcome message. The operator must send the first  
message to start the transactions.  
8. After the operator has finished working, he should signoff the application. The system will  
then UNBIND the CRT so that the CRT and applications are no longer communicating with  
each other. This leaves the CRT available for an operator to logon to another application.  
The 3274 controller will usually clear the CRT when this happens. SSCP will then send an  
enter request logon message which puts the CRT back to step 4 so as to start things over again.  
77  
 
PROTOCOL CONVERTER MODEL A/S-4  
Appendix B: General 3770 SNA  
Communication Operations  
This appendix is intended to give a basic description of the System Network Architecture (SNA)  
operation for an IBM 3776/77 Model 3 and 4 multiple logical unit (MLU) work station in the area of  
remote communications.  
The 3776/77 Model 3 and 4 is a stand alone work station consisting of; 1) console with keyboard and  
display. 2) console-mounted line printer with optional card reader and line printer. SNA calls the  
controller port a PU (Physical Unit) and the attached printers, consoles, card readers and disk LUs  
(Logical Unit).  
Communications with the host computer and the work station basically follows the following steps.  
1. The line is activated - This means a phone line is established between the host computer and  
the work station. This maybe done by dialing a phone for dialup applications or having a host  
computer operator connect a leased phone line.  
2. The PU is activated - The host sends the first message down the phone line to the 3776/77  
work station’s controller (PU) to tell it to start communications. The work station then tells  
the host when it is ready to start.  
3. The LUs are activated - The host now tells all the attached devices (LUs) to start  
communications. The devices respond to host when they are ready to start.  
4. SSCP (System Services Control Point) may send a message to the console requesting a logon  
message for the active LUs if the host system is GENed to send a SSCP message. A GEN is how  
the host system operators set up different work station options. At this point the console is  
considered to be in a SSCP to LU session. Session means that two devices are talking with  
each other.  
5. The work station operator may now enter a request logon message for an application - This  
allows the operator to request a logon to different applications like JES2, POWER or CICs on  
any available system. For example; Test System A or B or a Production System. If the work  
station will always be assigned to one application, the host system may be GENed (optioned)  
to automatically request an application logon, in which case this setup does not need to be  
performed by the work station operator.  
6. After a good logon message is received by the host it will BIND the requested LUs to the  
application - This establishes communication between the work station and the application.  
The devices (console, printer, readers, disk) are now considered to be in a LU-to-LU session.  
7. The application usually sends an active session message to the console - This allows the  
operator to run his application or transactions. At this time the operator can down-line load a  
job to the host, receive a job from the host, receive print, ask for status of jobs running on the  
system and many other operations.  
78  
 
APPENDIX B: General 3770 SNA Communication Operations  
8. After the operator has finished working, he should signoff the application. The system will  
UNBIND all the LUs from the host system so that the work station and application are no  
longer communicating with each other. This leaves the work station available for an operator  
to logon to another application. SSCP may send an enter request logon message which puts  
the work station back to step 4 so as to start things over again.  
Batch Terms:  
Function Management Header 1 (FMH-1) is used to select a destination within an LU. When sent by the  
A/S-4 it indicates to the host which device (card reader or console) is sending data to the host, used in  
the same way when host sends FMH-1 to the A/S-4.  
Function Management Header 2 (FMH-2) specifies the data management activities to be performed at  
the destination selected with the FMH-1. Typical data management activities are adding and replacing  
records, numbers of copies to print and date data created.  
79  
 
PROTOCOL CONVERTER MODEL A/S-4  
Appendix C: Conversion Charts  
The following pages contain the EBCDIC-to-ASCII Character conversion chart. Characters under the  
“RECV” heading are the EBCDIC characters received from the SNA host. The ASCII equivalent is to the  
right under the “CONV” column. When EBCDIC data is directed to the printer the characters will be  
changed as described under the “PRT CONV” column.  
The following notes are used to clarify the charts.  
1. New Line - Send carriage return line feed (CRLF) to VDU.  
2. Vertical Channel Select - Sends one line feed to printer and throws away next character.  
3. Horizontal Tab - Positions print head by using spaces to correct column to page if tabs setup  
by SHF command.  
4. Vertical Tab - Positions page by using CRLFs to correct line if tabs setup by SVF command.  
5. Form Feed - Sends form feed character, or number of CRLFs if option set to position paper to  
top of page.  
6. Throws away this character and two following if printer selected for a LU Type 3 running in  
Interactive mode(cursor positioning).  
7. Sends CRLF to printer, checking for bottom of page and if so, positions paper to top of form  
by using additional CRLFs or sending a form feed.  
8.Sends Backspace to printer if printhead positioned to column 2 or greater.  
9. Sends LF to printer, checking for bottom of page and if so, positions paper to top of form by  
using CRLFs or the form feed character.  
10. Indicates start of SNA character string (SCS), characters following will be handled as  
described in Section 8.3 (SHF, SVF, SLD and VCS command).  
11. Throw away this character and next one indicating number of transparent characters,  
following data will not be converted to ASCII.  
THW = Throw Away Character  
80  
 
APPENDIX C: Conversion Charts  
EBCDIC-to-ASCII Character Conversion  
EBCDIC-to-ASCII  
CONV  
EBCDIC-TO-ASCII  
CONV  
RECV  
PRT CONV  
RECV  
PRT CONV  
00-NUL  
01-SOH  
01-STX  
03-STX  
04-PF  
00-NUL  
01-SOH  
02-STX  
03-ETX  
00-  
09-HT  
00-  
7F-DEL  
00-  
00-  
00-  
OB-VT  
0C-FF  
OD-CR  
0E-SO  
OF-SI  
10-DEL  
11-DC1  
12-DC2  
13-DC3  
00-  
NOTE 1  
08-BS  
00-  
18-CAN  
19-EM  
00-  
20-SP  
THW  
20-DS  
21-SOS  
22-FS  
23-  
00  
THW  
THW  
THW  
THW  
THW  
NOTE 9  
THW  
THW  
THW  
THW  
THW  
NOTE 10  
THW  
THW  
THW  
07-BEL  
THW  
THW  
THW  
THW  
THW  
NOTE 11  
THW  
THW  
THW  
THW  
THW  
THW  
THW  
THW  
THW  
THW  
00  
THW  
1C-FS  
00-  
00-  
THW  
NOTE 2  
NOTE 3  
THW  
24-BYP  
25-LF  
26-ETB  
27-ESC  
28-  
05-HT  
0A-LF  
17-ETB  
1B-ESC  
00-  
06-LC  
07-DEL  
08-  
THW  
THW  
09-RLF  
OA-SHM  
0B-VT  
0C-FF  
OD-CR  
OE-SO  
0F-SI  
10-DLE  
11-DC1  
12-DC2  
13-DC3  
14-RES  
15-NL  
16-BS  
17-IL  
18-CAN  
19-EM  
1A-CC  
1B-  
THW  
29-  
00-  
THW  
2A-SM  
2B-  
00-  
NOTE 4  
NOTE 5  
OD-CR  
THW  
00-  
2C-  
00-  
2D-ENQ  
2E-ACK  
2F-BEL  
30-  
05-ENQ  
06-ACK  
07-BEL  
00-  
THW  
THW  
NOTE 6  
THW  
THW  
THW  
31-  
32-SYN  
33-  
00-  
16-SYN  
00-  
00-  
1E-RS  
00-  
34-PN  
35-RS  
36-UC  
37-EOT  
38-  
NOTE 7  
NOTE 8  
THW  
04-EOT  
00-  
THW  
THW  
39-  
00-  
THW  
3A-  
00-  
00-  
00-  
1D-GS  
1E-RS  
1F-IUS  
THW  
3B-  
00-  
1C-IFS  
1D-IGS  
1E-IRS  
1F-IUS  
THW  
3C-DC4  
3D-NAK  
3E-  
14-DC4  
15-NAK  
00-  
THW  
NOTE 7  
THW  
3F-SUB  
1A-SUB  
81  
 
PROTOCOL CONVERTER MODEL A/S-4  
EBCDIC-to-ASCII  
EBCDIC-TO-ASCII  
CONV  
RECV  
CONV  
PRT CONV  
RECV  
PRT CONV  
40-SP  
41-  
20-SP  
00-  
20-SP  
00-  
60-  
2D-  
2F-/  
00-  
2D- -  
2F-/  
00-  
61-  
42-  
00-  
00-  
62-  
43-  
00-  
00-  
63-  
00-  
00-  
44-  
00-  
00-  
64-  
00-  
00-  
45-  
00-  
00-  
65-  
00-  
00-  
46-  
00-  
00-  
66-  
00-  
00-  
47-  
00-  
00-  
67-  
00-  
00-  
48-  
00-  
00-  
68-  
00-  
00-  
49-  
00-  
00-  
69-  
00-  
00-  
4A-CENT  
4B-.  
4C-<  
4D-(  
4E-+  
4F-  
24-$  
2E-.  
3C-<  
8-(  
24-$  
2E-.  
3C-<  
28-(  
2B-+  
7C-|  
26-&  
00-  
6A-|  
6B-,  
6C-%  
6D-_  
6E->  
6F-?  
70-  
7C-|  
2C-,  
25-%  
5F-_  
3E->  
3F-?  
30-0  
00-  
7C-|  
2C-,  
25-%  
5F-_  
3E->  
3F-?  
30-0  
00-  
2B-+  
7C-|  
26-&  
00-  
50-&  
51-  
71-  
52-  
00-  
00-  
72-  
00-  
00-  
53-  
00-  
00-  
73-  
00-  
00-  
54-  
00-  
00-  
74-  
00-  
00-  
55-  
00-  
00-  
75-  
00-  
00-  
56-  
00-  
00-  
76-  
00-  
00-  
57-  
00-  
00-  
77-  
00-  
00-  
58-  
00-  
00-  
78-  
00-  
00-  
59-  
00-  
00-  
79-\  
7A-:  
7B-#  
7C-@  
7D-’  
7E-=  
7F-”  
60-\  
3A-:  
23-#  
40-@  
27-’  
3D-=  
22-”  
60-\  
3A-:  
23-#  
40-@  
27-’  
3D-=  
22-”  
5A-!  
5B-$  
5C-*  
5D-)  
5E-  
21-!  
24-$  
2A-*  
29-)  
3B-;  
5E-^  
21-!  
24-$  
2A-*  
29-)  
3B-;  
5E-^  
5F-  
82  
 
APPENDIX C: Conversion Charts  
EBCDIC-to-ASCII  
CONV  
EBCDIC-TO-ASCII  
RECV  
PRT CONV  
RECV  
CONV  
PRT CONV  
80-  
00-  
00-  
A0-  
00-  
00-  
81-a  
82-b  
83-c  
84-d  
85-e  
86-f  
87-g  
88-h  
89-i  
8A-  
61-a  
62-b  
63-c  
64-d  
65-e  
66-f  
67-g  
68-h  
69-i  
00-  
61-a  
62-b  
63-c  
64-d  
65-e  
66-f  
67-g  
68-h  
69-i  
00-  
A1-~  
A2-s  
A3-t  
A4-u  
A5-v  
A6-w  
A7-x  
A8-y  
A9-z  
AA-  
AB-  
AC-  
AD-  
AE-  
AF-  
B0-  
7E-~  
73-s  
74-t  
75-u  
76-v  
77-w  
78-x  
79-y  
7A-z  
00-  
7E-~  
73-s  
74-t  
75-u  
76-v  
77-w  
78-x  
79-y  
7A-z  
00-  
8B-  
00-  
00-  
00-  
00-  
8C-  
8D-  
8E-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
8F-  
90-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
91-j  
92-k  
93-1  
94-m  
95-n  
96-o  
97-p  
98-q  
99-r  
9A-  
6A-j  
6B-k  
6C-1  
6D-m  
6E-n  
6F-o  
70-p  
71-q  
72-r  
00-  
6A-j  
6B-k  
^c-1  
6D-m  
6E-n  
6F-o  
70-p  
71-q  
72-r  
00-  
B1-  
00-  
00-  
B2-  
00-  
00-  
B3-  
00-  
00-  
B4-  
00-  
00-  
B5-  
00-  
00-  
B6-  
00-  
00-  
B7-  
00-  
00-  
B8-  
00-  
00-  
B9-  
00-  
00-  
BA-  
BB-  
BC-  
BD-  
BE-  
BF-  
00-  
00-  
9B-  
00-  
00-  
00-  
00-  
9C-  
9D-  
9E-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
00-  
9F-  
00-  
00-  
00-  
00-  
83  
 
PROTOCOL CONVERTER MODEL A/S-4  
EBCDIC-to-ASCII  
EBCDIC-TO-ASCII  
CONV  
RECV  
CONV  
PRT CONV  
RECV  
PRT CONV  
C0-{  
C1-A  
C2-B  
C3-C  
C4-D  
C5-E  
C6-F  
C7-G  
C8-H  
C9-I  
CA-  
7B-{  
41-A  
42-B  
43-C  
44-D  
45-E  
46-F  
47-G  
48-H  
49-I  
00-  
7B-{  
41-A  
42-B  
43-C  
44-D  
45-E  
46-F  
47-G  
48-H  
49-I  
00-  
E0-\  
E1-  
5C-\  
00-  
5C-\  
00-  
E2-S  
E3-T  
E4-U  
E5-V  
E6-W  
E7-X  
E8-Y  
E9-Z  
EA-  
53-S  
54-T  
55-U  
56-V  
57-W  
58-X  
59-Y  
5A-Z  
00-  
53-S  
54-T  
55-U  
56-V  
57-W  
58-X  
59-Y  
5A-Z  
00-  
CB-  
00-  
00-  
EB-  
00-  
00-  
CC-  
00-  
00-  
EC-  
00-  
00-  
CD-  
00-  
00-  
ED-  
00-  
00-  
CE-  
00-  
00-  
EE-  
00-  
00-  
CF--  
D0-}  
D1-J  
D2-K  
D3-L  
D4-M  
D5-N  
D6-0  
D7-P  
D8-Q  
D9-R  
DA-  
00-  
00-  
EF-  
00-  
00-  
7D-}  
4A-J  
4B-K  
4C-L  
4D-M  
4E-N  
4F-O  
50-P  
51-Q  
52-R  
00-  
7D-}  
4A-J  
4B-K  
4C-L  
4D-M  
4E-N  
4F-0  
50-P  
51-Q  
52-R  
00-  
F0-0  
F1-1  
F2-2  
F3-3  
F4-4  
F5-5  
F6-6  
F7-7  
F8-8  
F9-9  
FA-  
30-0  
31-1  
32-2  
33-3  
34-4  
35-5  
36-6  
37-7  
38-8  
39-9  
00-  
30-0  
31-1  
32-2  
33-3  
43-4  
35-5  
36-6  
7-7  
38-8  
39-9  
00-  
DB-  
00-  
00-  
FB-  
00-  
00-  
DC-  
00-  
00-  
FC-  
00-  
00-  
DD-  
00-  
00-  
FD-  
00-  
00-  
DE-  
00-  
00-  
FE-  
00-  
00-  
DF-  
00-  
00-  
FF-  
00-  
00-  
84  
 
APPENDIX C: Conversion Charts  
The following chart is the ASCII-to-EBCDIC character conversion chart. Data received from the VDU  
in ASCII format is found in the “RECV” column and when the specific character is transmitted to the  
SNA host it will appear as described in the “CONV” column.  
ASCII-to-EBCDIC Character Conversion  
ASCII-to-EBCDIC  
ASCII-to-EBCDIC  
RECV  
CONV  
RECV  
CONV  
00-NUL  
01-SOH  
02-STX  
03-ETX  
04-EOT  
05-ENQ  
06-ACK  
07-BEL  
08-BS  
00-NUL  
01-SOH  
02-STX  
03-ETX  
37-EOT  
2D-ENQ  
2E-ACK  
2F-BEL  
16-BS  
20-SP  
21-!  
40-SP  
5A-!  
22-”  
7F-”  
23-#  
24-$  
25-%  
26-&  
27-’  
28-(  
29-)  
2A-*  
2B-+  
2C-,  
2D- -  
2E-.  
2F-/  
7B-#  
5B-$  
6C-%  
50-&  
7D-’  
4D-(  
5D-)  
5C-*  
4F-+  
6B-,  
09-HT  
05-HT  
0A-LF  
25-LF  
OB-VT  
0C-FF  
OD-CR  
0E-SO  
0F-SI  
0B-VT  
0C-FF  
0D-CR  
0E-SO  
OF-SI  
60- -  
4B-.  
61-/  
10-DLE  
11-DC1  
12-DC2  
13-DC3  
14-DC4  
15-NAK  
16-SYN  
17-ETB  
18-CAN  
19-EM  
1A-SUB  
1B-ESC  
1C-FS  
10-DLE  
11-DC1  
12-DC2  
13-DC3  
3C-DC4  
3D-NAK  
32-SYN  
26-ETB  
18-CAN  
19-EM  
3F-SUB  
27-ESC  
22-FS  
30-0  
31-1  
32-2  
33-3  
34-4  
35-5  
36-6  
37-7  
38-8  
39-9  
3A-:  
3B-;  
3C-<  
3D-=  
3E->  
3F-?  
F0-0  
F1-1  
F2-2  
F3-3  
F4-4  
F5-5  
F6-6  
F7-7  
F8-8  
F9-9  
7A-:  
5E-;  
4C-<  
7E-=  
6E->  
6F-?  
10-GS  
10-IGS  
35-RS  
00-  
1E-RS  
1F-US  
85  
 
PROTOCOL CONVERTER MODEL A/S-4  
ASCII-to-EBCDIC  
ASCII-to-EBCDIC  
RECV CONV  
RECV  
CONV  
40-@  
41-A  
42-B  
43-C  
44-D  
45-E  
46-F  
47-G  
48-H  
49-I  
4A-J  
4B-K  
4C-L  
4D-M  
4E-N  
4F-O  
50-P  
51-Q  
52-R  
53-S  
54-T  
55-U  
56-V  
57-W  
58-X  
59-Y  
5A-Z  
5B-[  
7C-@  
C1-A  
C2-A  
C3-C  
C4-D  
C5-E  
C6-E  
C7-G  
C8-H  
C9-I  
60-`  
79-`  
61-a  
62-b  
63-c  
64-d  
65-e  
66-f  
81-a  
82-b  
83-c  
84-d  
85-e  
86-e  
87-g  
88-h  
89-i  
67-g  
68-h  
69-i  
D1-J  
D2-K  
D3-L  
D4-M  
D5-N  
D6-O  
D7-P  
D8-Q  
D9-R  
E2-S  
E3-T  
E4-U  
E5-V  
E6-W  
E7-X  
E8-Y  
E9-Z  
00-  
6A-j  
91-j  
82-k  
93-l  
6B-k  
6C-l  
6D-m  
6E-n  
6F-o  
70-p  
71-q  
72-r  
94-m  
95-n  
96-o  
97-p  
98-q  
99-r  
A2-s  
A3-t  
A4-u  
A5-v  
A6-w  
A7-x  
A8-y  
A9-z  
C0-{  
6A-|  
73-s  
74-t  
75-u  
76-v  
77-w  
78-x  
79-y  
7A-z  
7B-{  
7C-|  
7D-}  
7E-~  
7F-DEL  
5C-\  
5D-]  
5E-^  
5F-_  
E0-\  
00-  
D0-}  
A1-~  
7F-DEL  
5F-^  
6D-_  
86  
 
© Copyright 1989. Black Box Corporation. All rights reserved.  
1000 Park Drive Lawrence, PA 15055-1018 724-746-5500  
Fax 724-746-0746  
 

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