Name: Apple SSC Type: Super Serial Card Short description: The SSC gives the Apple ][ a serial port (RS232). Up to 19200 baud are possible. Full handshake is supported. Installation: The card plugs into Slot 1, 2 or 3 of the Apple. Slot 1 is usually for a serial printer (Imagewriter), Slot 2 for a modem and Slot 3 for a terminal. The DB25 connector goes to the printer/modem/terminal line, the 10-pin connector on the other side of the cable goes into the cable socket at the rear side of the card. Jumper settings: The card has two jumpers and a additional jumper block. The jumper block can be installed two ways: 1) Arrow pointing towards the word TERMINAL 2) Arrow pointing towards the word MODEM Jumpered as MODEM, it will wire thru, jumpered as TERMINAL, it will twist 2-3, 4-5 and 6-20 (called null modem). The jumper switches are called SW1 and SW2, the switches are numbered SW1-1 to SW1-7 and SW2-1 to SW2-7 from left to right. SW1-1 SW1-2 SW1-3 SW1-4 off off off off 19200 baud off off off on 9600 baud off off on off 7200 baud off off on on 4800 baud off on off off 3600 baud off on off on 2400 baud off on on off 1800 baud off on on on 1200 baud on off off off 600 baud on off off on 300 baud on off on off 150 baud on off on on 135 baud on on off off 110 baud on on off on 75 baud on on on off 50 baud SW2-1 off 2 stopbits SW2-1 on 1 stopbit SW2-2 off no delay on carriage return SW2-2 on 1/4 sec delay SW2-3 SW2-4 off off 132 chars/line, apple screen off off on 80 chars/line, apple screen off on off 72 chars/line, apple screen off on on 40 chars/line, apple screen on SW2-5 off no line feed after carrigae return SW2-5 on line feed SW2-6 off ignore interrupts SW2-6 on generate interrupts SW1-7 on and SW2-7 off pin 4 or 20 (clear to send) SW1-7 off and SW2-7 on in 19 (secondary clear to send) DB-25 Pin assignment: 10-pin DB-25 header Connector Signal name ------ --------- ------------ 1 1 Frame Ground 2 2 Transmit Data (TXD) 3 3 Receive Data (RXD) 4 4 Request to Send (RTS) 5 5 Clear to Send (CTS) 6 6 Data Set Ready (DSR) 7 19 Secondary Clear to Send (SCTS) 8 7 Signal Ground 9 20 Data Terminal Ready (DTR) 10 8 Data Carrier Detect (DCD) Usage: Register settings of the ACIA: Memory locations used: --------------------------------------------------------------------------- SUPER SERIAL CARD (SSC) SETUP SETTINGS Recomended slots: slot 1 for terminal use (e.g. printer) slot 2 for communication use (e.g. modem) Jumper Block: for communication use label is upside down (arrow points up) for terminal use label is right side up (arrow points down) SW1 Dip Switch Settings: Baud SW1-1 SW1-2 SW1-3 SW1-4 SW1-8 50 on on on off not used 75 on on off on " 110 on on off off " 135 on off on on " 150 on off on off " 300 on off off on " 600 on off off off " 1200 off on on on " 1800 off on on off " 2400 off on off on " 3600 off on off off " 4800 off off on on " 7200 off off on off " 9600 off off off on " 19200 off off off off " Switch Settings For Communication mode: SW1-5; SW1-6; SW1-7 are all set on Data Parity Stop SW2-1 SW2-2 SW2-3 SW2-4 Bits Bits 7 none 1 on off off on 7 odd 1 on off on off 7 even 1 on off off off 7 none 2 off off off on 7 odd 2 off off on off 7 even 2 off off off off 8 none 1 on on off on 8 odd 1 on on on off 8 even 1 on on off off 8 none 2 off on off on 8 odd 2 off on on off 8 even 1 on on off off 8 none 2 off on off on 8 odd 2 off on on off 8 even 2 off on off off Note: SW2-1 thru SW2-4 settings can be overridden by software. SW2-5: ON for linefeed out OFF for no linefeed out SW2-6: ON for baud rates greater than 1199 baud SW2-7: OFF in communication mode SW2-8: Not used Connector Pin Assignments 10-Pin DB-25 Header Connector Signal Name ________________________________________________________________________ 1 1 Frame Ground 2 2 Transmit Data (TXD) 3 3 Receive Data (RXD) 4 4 Request To Send (RTS) 5 5 Clear To Send (CTS) 6 6 Data Set Ready (DSR) 7 19 Secondary Clear To Send (SCTS) 8 7 Signal Ground 9 20 Data Terminal Ready (DTR) 10 8 Data Carrier Detect (DCD)