COMPUADD, INC.
==============

   486 ISA HP SX/DX

   Processor         80486SX/80487SX/80486DX/80486DX2             
   Processor Speed   16/20/25/33/66(internal)MHz                  
   Chip Set          OPTI                                         
   Max. Onboard DRAM 64MB                                         
   Cache             64/256KB                                     
   BIOS              AMI                                          
   Dimensions        330mm x 218mm                                
   I/O Options       Floppy drive interface, IDE interface        
   NPU Options       None                                         

<gopher://bitreich.org/I/th99/m/C-D/32032-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose              | Location | Purpose       | Location |
   |----------------------+----------+---------------+----------|
   | Floppy drive         |    J6    | IDE interface |   J25    |
   | interface            |          | LED           |          |
   |----------------------+----------+---------------+----------|
   | IDE interface        |    J7    | Reset switch  |   J26    |
   |----------------------+----------+---------------+----------|
   | External battery     |   J18    | Power LED &   |   J27    |
   |                      |          | keylock       |          |
   |----------------------+----------+---------------+----------|
   | Chassis fan power    |   J24    | Speaker       |   J28    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              |  Jumper  |  Position  |
   |------------------------------------+----------+------------|
   |>> | CMOS memory normal operation   |    J5    |    Open    |
   |---+--------------------------------+----------+------------|
   |   | CMOS memory clear              |    J5    |   Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (4) 1MB x 9 |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (4) 1MB x 9 | (4) 1MB x 9 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 12MB | (4) 1MB x 9 | (4) 1MB x 9 | (4) 1MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 20MB | (4) 1MB x 9 | (4) 4MB x 9 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 20MB | (4) 4MB x 9 | (4) 1MB x 9 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 24MB | (4) 1MB x 9 | (4) 1MB x 9 | (4) 4MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 24MB | (4) 1MB x 9 | (4) 4MB x 9 | (4) 1MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 24MB | (4) 4MB x 9 | (4) 1MB x 9 | (4) 1MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 28MB | (4) 1MB x 9 | (4) 1MB x 9 | (4) 1MB x  | (4) 4MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 28MB | (4) 4MB x 9 | (4) 1MB x 9 | (4) 1MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 28MB | (4) 4MB x 9 | (4) 1MB x 9 | (4) 1MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 32MB | (4) 4MB x 9 | (4) 4MB x 9 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 36MB | (4) 4MB x 9 | (4) 1MB x 9 | (4) 4MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (4) 1MB x 9 | (4) 4MB x 9 | (4) 4MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (4) 4MB x 9 | (4) 4MB x 9 | (4) 1MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 40MB | (4) 1MB x 9 | (4) 1MB x 9 | (4) 4MB x  | (4) 4MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 40MB | (4) 1MB x 9 | (4) 4MB x 9 | (4) 4MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 40MB | (4) 4MB x 9 | (4) 1MB x 9 | (4) 4MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 40MB | (4) 4MB x 9 | (4) 4MB x 9 | (4) 1MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 48MB | (4) 4MB x 9 | (4) 4MB x 9 | (4) 4MB x  |    NONE    |
   |      |             |             |     9      |            |
   |------+-------------+-------------+------------+------------|
   | 52MB | (4) 1MB x 9 | (4) 4MB x 9 | (4) 4MB x  | (4) 4MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 52MB | (4) 4MB x 9 | (4) 1MB x 9 | (4) 4MB x  | (4) 4MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 52MB | (4) 4MB x 9 | (4) 4MB x 9 | (4) 4MB x  | (4) 1MB x  |
   |      |             |             |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 64MB | (4) 4MB x 9 | (4) 4MB x 9 | (4) 4MB x  | (4) 4MB x  |
   |      |             |             |     9      |     9      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size   |   J19    |   J20    |   J21   |   J22   |  J23   |
   |---------+----------+----------+---------+---------+--------|
   |   0KB   |   Open   |   Open   |  Open   | Closed  | Closed |
   |---------+----------+----------+---------+---------+--------|
   |  64KB   |   Open   |   Open   |  Open   |  Open   |  Open  |
   |---------+----------+----------+---------+---------+--------|
   |  256KB  |  Closed  |  Closed  | Closed  |  Open   |  Open  |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |    Type    |    J30    |    J31    |    J32    |    J33    |
   |------------+-----------+-----------+-----------+-----------|
   |  80486SX   |   Open    |  Closed   |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   |  80486DX   |  Closed   |   Open    |  Closed   |  Closed   |
   +------------------------------------------------------------+