INDUSTRIAL COMPUTER SOURCE
==========================

   COMM4AT

   Card Type               Multi-I/O card                         
   Chip Set                Unidentified                           
   Maximum Onboard Memory  Unidentified                           
   I/O Options             Serial ports (4 RS-232)                
   Hard Drives supported   None                                   
   Floppy drives supported None                                   
   Data Bus                16-bit ISA                             
   Card Size               Half-length                            

<gopher://bitreich.org/I/th99/i/I-L/54005-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                      Function                      | Label |
   |----------------------------------------------------+-------|
   | 37-pin octopus connector to four 25-pin RS-232     |  CN1  |
   | ports                                              |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            | Label |     Position      |
   |--------------------------------+-------+-------------------|
   | Multiple interrupt enabled     |  E1   | Pins 3 & 4 closed |
   |--------------------------------+-------+-------------------|
   | Anti-lockup feature enabled    |  E1   | Pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |Setting|SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6|SW1/7|SW1/8|
   |-------+------+------+------+------+------+-----+-----+-----|
   | 000h  |  On  |  On  |  On  |  On  |  On  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 020h  |  On  |  On  |  On  |  On  |  On  | On  | On  | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 040h  |  On  |  On  |  On  |  On  |  On  | On  | Off | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 060h  |  On  |  On  |  On  |  On  |  On  | On  | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 080h  |  On  |  On  |  On  |  On  |  On  | Off | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 1F60h | Off  | Off  | Off  | Off  | Off  | On  | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 1F80h | Off  | Off  | Off  | Off  | Off  | Off | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 1FA0h | Off  | Off  | Off  | Off  | Off  | Off | On  | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 1FC0h | Off  | Off  | Off  | Off  | Off  | Off | Off | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 1FE0h | Off  | Off  | Off  | Off  | Off  | Off | Off | Off |
   |------------------------------------------------------------|
   |                           Note:                            |
   |                                                            |
   |A total of 256 base address settings are available. The     |
   |jumpers are a binary representation of the decimal memory   |
   |addresses. SW1/1 is the Most Significant Bit and jumper     |
   |SW1/8 is the Least Significant Bit. The jumpers have the    |
   |following decimal values: SW1/1=4096, SW1/2=2048,           |
   |SW1/3=1024, SW1/4=512, SW1/5=256, SW1/6=128, SW1/7=64,      |
   |SW1/8=32. Turn off the switches and add the values of the   |
   |switches to obtain the correct memory address. (Off=1, On=0)|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT INTERRUPT SELECTION               |
   |------------------------------------------------------------|
   |            IRQ             |           Position            |
   |----------------------------+-------------------------------|
   |   |          IRQ2          |    E1/pins 23 & 24 closed     |
   |---+------------------------+-------------------------------|
   |>> |          IRQ3          |    E1/pins 21 & 22 closed     |
   |---+------------------------+-------------------------------|
   |   |          IRQ4          |    E1/pins 19 & 20 closed     |
   |---+------------------------+-------------------------------|
   |   |          IRQ5          |    E1/pins 17 & 18 closed     |
   |---+------------------------+-------------------------------|
   |   |          IRQ6          |    E1/pins 15 & 16 closed     |
   |---+------------------------+-------------------------------|
   |   |          IRQ7          |    E1/pins 13 & 14 closed     |
   |---+------------------------+-------------------------------|
   |   |         IRQ10          |    E1/pins 11 & 12 closed     |
   |---+------------------------+-------------------------------|
   |   |         IRQ11          |     E1/pins 9 & 10 closed     |
   |---+------------------------+-------------------------------|
   |   |         IRQ12          |     E1/pins 7 & 8 closed      |
   |---+------------------------+-------------------------------|
   |   |         IRQ15          |     E1/pins 5 & 6 closed      |
   +------------------------------------------------------------+