SEALEVEL SYSTEMS, INC.
======================

   REL-16

   Card Type           Relay Output board                         
   Chip Set            Unidentified                               
   I/O Options         Parallel ports (2) via DB37 port           
   Data Bus            8-bit ISA                                  
   Card Size           Half-length, full-height                   

<gopher://bitreich.org/I/th99/i/S-T/55007-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |           Function            |           Label            |
   |-------------------------------+----------------------------|
   | 37-pin parallel port          |             P2             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 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  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 008h  |  On  |  On  |  On  |  On  |  On  | On  | On  | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 018h  |  On  |  On  |  On  |  On  |  On  | On  | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 038h  |  On  |  On  |  On  |  On  |  On  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 078h  |  On  |  On  |  On  |  On  | Off  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 780h  | Off  | Off  | Off  | Off  |  On  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 7C0h  | Off  | Off  | Off  | Off  | Off  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 7E0h  | Off  | Off  | Off  | Off  | Off  | Off | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 7F0h  | Off  | Off  | Off  | Off  | Off  | Off | Off | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 7F8h  | 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. SW1/8 is the Least Significant Bit and switch    |
   |SW1/1 is the Most Significant Bit. The switches have the    |
   |following decimal values: SW1/8=8, SW1/7=16, SW1/6=32,      |
   |SW1/5=64, SW1/4=128, SW1/3=256, SW1/2=512, SW1/1=1024. Turn |
   |off the switches and add the values of the switches to      |
   |obtain the correct memory address. (Off=1, On=0)            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | Output ports are connected to 16 dip reed relays. Relays   |
   | close when energized.                                      |
   +------------------------------------------------------------+