COMPAQ COMPUTER CORPORATION
===========================

   DeskPro 486/50L (Model 001987)

   Processor             80486DX                                  
   Processor Speed       50MHz                                    
   Chip Set              Compaq                                   
   Max. Onboard DRAM     104MB (on system memory card)            
   Cache                 None                                     
   BIOS                  Compaq                                   
   Dimensions            332mm x 333mm                            
   I/O Options           32-bit system memory card slot           
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/C-D/30862-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose            | Location |
   |-----------------+----------+--------------------+----------|
   | Bus mouse       |    C1    | 5.25 inch floppy   |   FD2    |
   |                 |          | drive interface    |          |
   |-----------------+----------+--------------------+----------|
   | Parallel port   |    C2    | IDE interface      |   HDD    |
   |-----------------+----------+--------------------+----------|
   | Serial port 1   |    C3    | System memory card |   MEM    |
   |-----------------+----------+--------------------+----------|
   | VGA port        |    C4    | Drive power        |  P1-P5   |
   |-----------------+----------+--------------------+----------|
   | Main power      |   DCIN   | VGA feature        |   VGA    |
   |                 |          | interface          |          |
   |-----------------+----------+--------------------+----------|
   | 3.5 inch floppy |   FD1    |                    |          |
   | drive interface |          |                    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Switch | Position |
   |----------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  | SW1/1  |   Off    |
   |---+------------------------------------+--------+----------|
   |>> | EISA configuration unlocked        | SW1/2  |   Off    |
   |---+------------------------------------+--------+----------|
   |   | EISA configuration locked          | SW1/2  |    On    |
   |---+------------------------------------+--------+----------|
   |>> | Floppy drive write enabled         | SW1/3  |   Off    |
   |---+------------------------------------+--------+----------|
   |   | Floppy drive write disabled        | SW1/3  |    On    |
   |---+------------------------------------+--------+----------|
   |>> | Boot drive select determined by    | SW1/4  |   Off    |
   |   | EISA configuration                 |        |          |
   |---+------------------------------------+--------+----------|
   |   | Boot drive select floppy drive     | SW1/4  |    On    |
   |---+------------------------------------+--------+----------|
   |>> | Password check at power-on enabled | SW1/5  |   Off    |
   |---+------------------------------------+--------+----------|
   |   | Password check at power-on         | SW1/5  |    On    |
   |   | disabled and cleared               |        |          |
   |---+------------------------------------+--------+----------|
   |>> | EISA configuration enabled         | SW1/6  |   Off    |
   |---+------------------------------------+--------+----------|
   |   | EISA configuration disabled        | SW1/6  |    On    |
   +------------------------------------------------------------+

   SYSTEM MEMORY BOARD (Model 1990)

<gopher://bitreich.org/I/th99/m/C-D/30862-2.png>
   

+-------------------------------------------------------------------------+
|                           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       |
|----+----+-----------------+----+-----------------+----+-----------------|
|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       |
+-------------------------------------------------------------------------+

+---------------------------------------------------------------------------------------+
|                                  DRAM CONFIGURATION                                   |
|---------------------------------------------------------------------------------------|
|Size | M0 |       M1        | M2 |       M3        |       M4        |       M5        |
|-----+----+-----------------+----+-----------------+-----------------+-----------------|
|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       |
|-----+----+-----------------+----+-----------------+-----------------+-----------------|
|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 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.                                                    |
+---------------------------------------------------------------------------------------+