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       # COMPAQ COMPUTER CORPORATION
       
          DeskPro 486/25 (Model 001532)
       
          Processor         80486DX                                      
          Processor Speed   25MHz                                        
          Chip Set          Compaq                                       
          Max. Onboard DRAM 100MB (on system memory card)                
          Cache             None                                         
          BIOS              Compaq                                       
          Dimensions        332mm x 333mm                                
          I/O Options       32-bit system memory card slot, floppy drive 
                            interfaces (2)                               
          NPU Options       4167                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Bus mouse         |    C1    | 3.5 inch floppy  |   FD2    |
          |                   |          | drive interface  |          |
          |-------------------+----------+------------------+----------|
          | Parallel port     |    C2    | Drive access LED |   LED    |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |    C3    | System memory    |   MEM    |
          |                   |          | card             |          |
          |-------------------+----------+------------------+----------|
          | VGA port          |    C4    | Drive power      |  P1-P6   |
          |-------------------+----------+------------------+----------|
          | Main power        |   DCIN   | Speaker          |   SPK    |
          |-------------------+----------+------------------+----------|
          | Fan power         |   FAN    | VGA feature      |   VGA    |
          |                   |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | 5.25 inch floppy  |   FD1    |                  |          |
          | drive interface   |          |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Jumper |  Position   |
          |-------------------------------------+--------+-------------|
          | »  | Maintenece mode disabled       |   E1   | pins 2 & 3  |
          |    |                                |        |   closed    |
          |----+--------------------------------+--------+-------------|
          |    | Maintenance mode enabled       |   E1   | pins 1 & 2  |
          |    |                                |        |   closed    |
          |----+--------------------------------+--------+-------------|
          | »  | Password check at power-on     |   E2   | pins 2 & 3  |
          |    | enabled                        |        |   closed    |
          |----+--------------------------------+--------+-------------|
          |    | Password check at power-on     |   E2   | pins 1 & 2  |
          |    | disabled                       |        |   closed    |
          |----+--------------------------------+--------+-------------|
          | »  | VGA port enabled               |   E3   | pins 2 & 3  |
          |    |                                |        |   closed    |
          |----+--------------------------------+--------+-------------|
          |    | VGA port disabled              |   E3   | pins 1 & 2  |
          |    |                                |        |   closed    |
          |----+--------------------------------+--------+-------------|
          | »  | Local bus hidden refresh       |   E4   | pins 2 & 3  |
          |    | enabled                        |        |   closed    |
          |----+--------------------------------+--------+-------------|
          |    | Local bus hidden refresh       |   E4   | pins 1 & 2  |
          |    | disabled                       |        |   closed    |
          |------------------------------------------------------------|
          | Note:Not all jumpers are present on all board revisions.   |
          +------------------------------------------------------------+
       
          SYSTEM MEMORY CARD (Model 1508)
       
 (IMG) IMG 2
          
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  |  M0  |       M1        |  M2  |  M3  |  M4  |  M5  |
          |-------+------+-----------------+------+------+------+------|
          |  4MB  | NONE |      NONE       | NONE | NONE | NONE | NONE |
          |-------+------+-----------------+------+------+------+------|
          |  6MB  | 2MB  |      NONE       | NONE | NONE | NONE | NONE |
          |-------+------+-----------------+------+------+------+------|
          |  8MB  | 2MB  |       2MB       | NONE | NONE | NONE | NONE |
          |-------+------+-----------------+------+------+------+------|
          | 10MB  | 2MB  |       2MB       | 2MB  | NONE | NONE | NONE |
          |-------+------+-----------------+------+------+------+------|
          | 12MB  | 2MB  |       2MB       | 2MB  | 2MB  | NONE | NONE |
          |-------+------+-----------------+------+------+------+------|
          | 12MB  | 8MB  |      NONE       | NONE | NONE | NONE | NONE |
          |-------+------+-----------------+------+------+------+------|
          | 12MB  | 8MB  |-----------------| NONE | NONE | NONE | NONE |
          +------------------------------------------------------------+
       
       +-------------------------------------------------------------------------+
       |                       DRAM CONFIGURATION (CON'T)                        |
       |-------------------------------------------------------------------------|
       |Size| M0 |       M1        | M2 |       M3        | M4 |       M5        |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |14MB|2MB |       2MB       |2MB |       2MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |14MB|8MB |       2MB       |NONE|      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |14MB|8MB |-----------------|2MB |      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |16MB|2MB |       2MB       |2MB |       2MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |16MB|8MB |       2MB       |2MB |      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |16MB|8MB |-----------------|2MB |       2MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |18MB|8MB |       2MB       |2MB |       2MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |18MB|8MB |-----------------|2MB |       2MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |20MB|8MB |       2MB       |2MB |       2MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |20MB|8MB |-----------------|2MB |       2MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |20MB|8MB |       8MB       |NONE|      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |20MB|8MB |-----------------|8MB |      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |20MB|8MB |-----------------|8MB |-----------------|NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |22MB|8MB |       2MB       |2MB |       2MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |22MB|8MB |       8MB       |2MB |      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |22MB|8MB |-----------------|8MB |       2MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |22MB|8MB |-----------------|8MB |-----------------|2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |24MB|8MB |       8MB       |2MB |       2MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |24MB|8MB |-----------------|8MB |       2MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |24MB|8MB |-----------------|8MB |-----------------|2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |26MB|8MB |       8MB       |2MB |       2MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |26MB|8MB |-----------------|8MB |       2MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |28MB|8MB |       8MB       |2MB |       2MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |28MB|8MB |       8MB       |8MB |      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |28MB|8MB |-----------------|8MB |       8MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |28MB|8MB |-----------------|8MB |-----------------|8MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |28MB|8MB |-----------------|8MB |-----------------|8MB |-----------------|
       |----+----+-----------------+----+-----------------+----+-----------------|
       |30MB|8MB |       8MB       |8MB |       2MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |30MB|8MB |-----------------|8MB |       8MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |30MB|8MB |-----------------|8MB |-----------------|8MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |32MB|8MB |       8MB       |8MB |       2MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |32MB|8MB |-----------------|8MB |       8MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |34MB|8MB |       8MB       |8MB |       2MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |36MB|8MB |       8MB       |8MB |       8MB       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |36MB|8MB |-----------------|8MB |       8MB       |8MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |36MB|8MB |-----------------|8MB |-----------------|8MB |       8MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |36MB|32MB|-----------------|NONE|      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |38MB|8MB |       8MB       |8MB |       8MB       |2MB |      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |38MB|8MB |-----------------|8MB |       8MB       |8MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |38MB|32MB|-----------------|2MB |      NONE       |NONE|      NONE       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |40MB|8MB |       8MB       |8MB |       8MB       |2MB |       2MB       |
       |----+----+-----------------+----+-----------------+----+-----------------|
       |40MB|32MB|-----------------|2MB |       2MB       |NONE|      NONE       |
       +-------------------------------------------------------------------------+
       
       +---------------------------------------------------------------------------------------+
       |                              DRAM CONFIGURATION (CON'T)                               |
       |---------------------------------------------------------------------------------------|
       |Size | M0 |       M1        | M2 |       M3        |       M4        |       M5        |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |44MB |8MB |       8MB       |8MB |       8MB       |       8MB       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |44MB |8MB |-----------------|8MB |       8MB       |       8MB       |       8MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |44MB |32MB|-----------------|2MB |       2MB       |       2MB       |       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |44MB |32MB|-----------------|8MB |      NONE       |      NONE       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |44MB |32MB|-----------------|8MB |-----------------|      NONE       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |46MB |8MB |       8MB       |8MB |       8MB       |       8MB       |       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |46MB |32MB|-----------------|8MB |       2MB       |      NONE       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |46MB |32MB|-----------------|8MB |-----------------|       2MB       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |52MB |8MB |       8MB       |8MB |       8MB       |       8MB       |       8MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |52MB |32MB|-----------------|8MB |       8MB       |      NONE       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |52MB |32MB|-----------------|8MB |-----------------|       8MB       |-----------------|
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |54MB |32MB|-----------------|8MB |       8MB       |       2MB       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |54MB |32MB|-----------------|8MB |       8MB       |-----------------|       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |56MB |32MB|-----------------|8MB |       8MB       |       2MB       |       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |60MB |32MB|-----------------|8MB |       8MB       |       8MB       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |60MB |32MB|-----------------|8MB |-----------------|       8MB       |       8MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |62MB |32MB|-----------------|8MB |       8MB       |       8MB       |       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |68MB |32MB|-----------------|8MB |       8MB       |       8MB       |       8MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |68MB |32MB|-----------------|32MB|-----------------|      NONE       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |70MB |32MB|-----------------|32MB|-----------------|       2MB       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |72MB |32MB|-----------------|32MB|-----------------|       2MB       |       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |76MB |32MB|-----------------|32MB|-----------------|       8MB       |      NONE       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |76MB |32MB|-----------------|32MB|-----------------|       8MB       |-----------------|
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |78MB |32MB|-----------------|32MB|-----------------|       8MB       |       2MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |84MB |32MB|-----------------|32MB|-----------------|       8MB       |       8MB       |
       |-----+----+-----------------+----+-----------------+-----------------+-----------------|
       |100MB|32MB|-----------------|32MB|-----------------|      32MB       |-----------------|
       |---------------------------------------------------------------------------------------|
       |Note: The system memory card is factory configured with 4MB of DRAM on board. The      |
       |system memory card uses proprietary memory modules, some require only one module space |
       |on the memory board, while others require two. In the cases where a double size module |
       |is used, the following space is marked with "-----------------", designating that space|
       |as occupied.                                                                           |
       +---------------------------------------------------------------------------------------+