APPLE SUPER SERIAL CARD DIP SWITCH FUNCTIONS ______________________ Switch Block #1 ______________________ |Switch number Definition | Switch number Definition| |------------------------------|------------------------------| |1 2 3 4 Baud Rate | 5 6 Mode Setting| |==============================|==============================| |ON ON ON ON Undefined | ON ON Communications| |ON ON ON OFF 50 | OFF ON Printer| |ON ON OFF ON 75 | ON OFF SIC P8 emulation| |ON ON OFF OFF 110 | OFF OFF SIC P8A emulation| |ON OFF ON ON 135 |______________________________| |ON OFF ON OFF 150 | |ON OFF OFF ON 300 | |ON OFF OFF OFF 600 | |OFF ON ON ON 1200 | |OFF ON OFF ON 2400 | |OFF ON OFF OFF 3600 | |OFF OFF ON ON 4800 | |OFF OFF ON OFF 7200 | |OFF OFF OFF ON 9600 | |OFF OFF OFF OFF 19200 | |______________________________| ______________________ Switch Block #2 _____________________________ |Switch Definition | Switch Def | Switch Definition | |---------------------|-------------|--------------------------------| |1 Data Format | 2 CR delay | 3 4 Line width/video | |=====================|=============|================================| |ON 8 data, 1 stop | ON 32 ms | ON ON 40 columns, video ON | |OFF 8 data, 2 stop | OFF none | ON OFF 72 columns, video OFF | | | | OFF ON 80 columns, video OFF | | | | OFF OFF 132 columns, video OFF| |_____________________|_____________|________________________________| ____________ Switch Block #2 cont'd __________ _______Handshaking_______ |Switch Definition | Switch Definition | | Switch Definition | |---------------------|------------------------| |-----------------------| |5 Linefeeds | 6 Interrupts | | 1-7/2-7 CTS | |---------------------|------------------------| |-----------------------| |ON add LF after CR | ON Interrupts on | | ON/OFF Normal (Pin 20)| |OFF don't add LFs | OFF No interrupts | | OFF/ON Alt (Pin 19)| |_____________________|________________________| |_______________________| ______________________________ ________________________________________ | Connector Pin Assignments || Jumper Block Wiring | |------------------------------||----------------------------------------| | 10 Pin DB-25 Signal || SSC signal MODEM (pin) TERMINAL (pin) | | Header Connector Name ||----------------------------------------| |------------------------------|| TXD TXD 2 RXD 3 | | 1 1 Frame GND || RXD RXD 3 TXD 2 | | 2 2 TXD || RTS RTS 4 DCD 8 | | 3 3 RXD || CTS CTS 5 DCD 8 | | 4 4 RTS || DSR DSR 6 DTR 20 | | 5 5 CTS || DCD DCD 8 RTS 4 | | 6 6 DSR || DCD DCD 8 CTS 5 | | 7 19 SCTS || DTR DTR 20 DSR 6 | | 8 7 Signal GND ||----------------------------------------| | 9 20 DTR || Note that RS-232-C signals on the SSC | | 10 8 DCD || use negative-true logic; that is, they | |______________________________|| are true at 0v and false at +5 volts | |________________________________________| _________________________________________ ______________________ | | | | | Explanation Of Signals | | Jumper Block | | ----------------------------------------| |---------------------| | GND Ground, either Frame or Signal | | MODEM | | TXD Transmit Data | | ______________ | | RXD Receive Data | | | | | | RTS Request To Send | | | /\ | | | CTS Clear To Send | | | /__\ | | | DSR Data Set Ready | | |______________| | | SCTS Secondary CTS | | | | DTR Data Terminal Ready | | TERMINAL | | DCD Data Carrier Detect | | (Printer) | |_________________________________________| |_____________________| Pins 1-7 and 2-7 are set together to determine the SSC pin to be read for the Hardware Handshaking signal. Then, set to monitor Pin #20. Common Configurations: [Don't Forget The JUMPER Block] Hi Speed Modem ImageWriter I/II 1234567 1234567 1234567 1234567 ON XXXXXX XXXXXX X XX X XX OFF X X XXX X XX XX -end of file-