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

   Portable (PLUS) (Model 00004-Rev. C or earlier)

   Processor             8088                                     
   Processor Speed       4.77MHz                                  
   Chip Set              None                                     
   Max. Onboard DRAM     640KB                                    
   Cache                 None                                     
   BIOS                  Compaq                                   
   Dimensions            372mm x 180mm                            
   I/O Options           None                                     
   NPU Options           8087                                     

<gopher://bitreich.org/I/th99/m/C-D/30881-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose            | Location | Purpose         | Location |
   |--------------------+----------+-----------------+----------|
   | Main power         |    P0    | Speaker         |   SPK    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Switch | Position |
   |----------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  | SW1/1  |   Off    |
   |---+------------------------------------+--------+----------|
   |>> | NPU disabled                       | SW1/2  |    On    |
   |---+------------------------------------+--------+----------|
   |   | NPU enabled                        | SW1/2  |   Off    |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  | SW1/3  |   Off    |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  | SW1/4  |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size   |    Bank 0    |  Bank 1   |  Bank 2   |  Bank 3   |
   |---------+--------------+-----------+-----------+-----------|
   |  128KB  |   (9) 4164   | (9) 4164  |   NONE    |   NONE    |
   |---------+--------------+-----------+-----------+-----------|
   |  192KB  |   (9) 4164   | (9) 4164  | (9) 4164  |   NONE    |
   |---------+--------------+-----------+-----------+-----------|
   |  256KB  |   (9) 4164   | (9) 4164  | (9) 4164  | (9) 4164  |
   |---------+--------------+-----------+-----------+-----------|
   |  384KB  |   (9) 4164   | (9) 4164  | (9) 41256 |   NONE    |
   |---------+--------------+-----------+-----------+-----------|
   |  448KB  |   (9) 4164   | (9) 4164  | (9) 4164  | (9) 41256 |
   |---------+--------------+-----------+-----------+-----------|
   |  512KB  |  (9) 41256   | (9) 41256 |   NONE    |   NONE    |
   |---------+--------------+-----------+-----------+-----------|
   |  544KB  |   (9) 4164   | (9) 4164  | (9) 41256 | (9) 41256 |
   |---------+--------------+-----------+-----------+-----------|
   |  640KB  |   (9) 4164   | (9) 4164  | (9) 41256 | (9) 41256 |
   |------------------------------------------------------------|
   | Note:640KB requires ROM version C or later in which case   |
   | SW2 switch settings are ignored.                           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   | Size |SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7|SW2/8|
   |------+------+------+------+------+------+------+-----+-----|
   |128KB |  On  | Off  |  On  |  On  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |192KB |  On  |  On  | Off  |  On  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |256KB |  On  | Off  | Off  |  On  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |320KB |  On  |  On  |  On  | Off  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |384KB |  On  | Off  |  On  | Off  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |448KB |  On  |  On  | Off  | Off  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |512KB |  On  | Off  | Off  | Off  | Off  | Off  | Off | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |544KB | Off  | Off  | Off  | Off  | Off  | Off  | Off | Off |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Drives installed  |       SW1/7       |       SW1/8       |
   |--------------------+-------------------+-------------------|
   |         1          |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |         2          |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |         3          |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |         4          |        Off        |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   MONITOR CONFIGURATION                    |
   |------------------------------------------------------------|
   |            Type             |     SW1/5     |    SW1/6     |
   |-----------------------------+---------------+--------------|
   | 80 x 25 color (Compaq VDU)  |      On       |     Off      |
   |-----------------------------+---------------+--------------|
   | 40 x 25 color (Compaq VDU)  |      Off      |      On      |
   |-----------------------------+---------------+--------------|
   | 80 x 25 color (EGA or RGBI) |      On       |      On      |
   |-----------------------------+---------------+--------------|
   |         Monochrome          |      Off      |     Off      |
   +------------------------------------------------------------+