NATIONAL INSTRUMENTS
====================

   PC-DIO-24

   Card Type           Digital I/O card                           
   Chip Set            OKI                                        
   I/O Options         50-pin interface                           
   Data Bus            16-bit ISA                                 
   Card Size           Half-length, full-height                   

<gopher://bitreich.org/I/th99/i/M-O/54994-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |           Function            |           Label            |
   |-------------------------------+----------------------------|
   | 50-pin interface              |             J1             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   | Setting | U2/1 | U2/2 | U2/3 |U2/4 |U2/5 |U2/6 |U2/7 |U2/8 |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  100h   | Off  |  On  |  On  | On  | On  | On  | On  | On  |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  200h   |  On  | Off  |  On  | On  | On  | On  | On  | On  |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  >>210h  | Off  |  On  |  On  | On  | On  | Off | On  | On  |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  300h   | Off  | Off  |  On  | On  | On  | On  | On  | On  |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  400h   |  On  |  On  | Off  | On  | On  | On  | On  | On  |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  EF00h  | Off  | Off  | Off  | Off | On  | Off | Off | Off |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  FB00h  | Off  | Off  |  On  | Off | Off | Off | Off | Off |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  FD00h  | Off  |  On  | Off  | Off | Off | Off | Off | Off |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  FE00h  |  On  | Off  | Off  | Off | Off | Off | Off | Off |
   |---------+------+------+------+-----+-----+-----+-----+-----|
   |  FF00h  | Off  | Off  | Off  | Off | Off | Off | Off | Off |
   |------------------------------------------------------------|
   |                           Note:                            |
   |                                                            |
   |A total of 255 base address settings are available. The     |
   |switches are a binary representation of the decimal memory  |
   |addresses. U2/8 is the Most Significant Bit and switch U2/1 |
   |is the Least Significant Bit. The switches have the         |
   |following decimal values: U2/8=32768, U2/7=16384, U2/6=8192,|
   |U2/5=4096, U2/4=2048, U2/3=1024, U2/2=512, U2/1=256. Turn   |
   |off the switches and add the values of the switches to      |
   |obtain the correct memory address. (Off=1, On=0)            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              INTERRUPT ENABLE LINE SELECTION               |
   |------------------------------------------------------------|
   |      Line      |   W1/A   |   W1/B   |   W1/C   |   W1/D   |
   |----------------+----------+----------+----------+----------|
   |      PC2       |   Open   |   Open   |  Closed  |   Open   |
   |----------------+----------+----------+----------+----------|
   |      >>PC4      |   Open   |  Closed  |   Open   |   Open   |
   |----------------+----------+----------+----------+----------|
   |      PC6       |  Closed  |   Open   |   Open   |   Open   |
   |----------------+----------+----------+----------+----------|
   | N/C (disabled) |   Open   |   Open   |   Open   |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   | IRQ  |  W2/A  |  W2/B  |  W2/C  |  W2/D  |  W2/E  |  W2/F  |
   |------+--------+--------+--------+--------+--------+--------|
   |  3   | Closed |  Open  |  Open  |  Open  |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  4   |  Open  | Closed |  Open  |  Open  |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  >>5  |  Open  |  Open  | Closed |  Open  |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  6   |  Open  |  Open  |  Open  | Closed |  Open  |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  7   |  Open  |  Open  |  Open  |  Open  | Closed |  Open  |
   |------+--------+--------+--------+--------+--------+--------|
   |  9   |  Open  |  Open  |  Open  |  Open  |  Open  | Closed |
   +------------------------------------------------------------+