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       # COMPAQ COMPUTER CORPORATION
       
          PORTABLE III
       
          Processor    80286 (exact location unidentified)               
          Processor    8/12MHz                                           
          Speed        
          Chip Set     Unidentified                                      
          Max. Onboard 6MB (4MB on external memory card)                 
          DRAM         
          Cache        None                                              
          BIOS         Unidentified                                      
          Dimensions   330mm x 218mm                                     
          I/O Options  IDE interface, external memory card slot, floppy  
                       drive interface, parallel port, serial port, VGA  
                       port, display connector                           
          NPU Options  80287 (exact location unidentified)               
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | Parallel port  |   CN1    | External Memory     |   CN5    |
          |                |          | card slot           |          |
          |----------------+----------+---------------------+----------|
          | VGA port       |   CN2    | IDE interface       |   CN6    |
          |----------------+----------+---------------------+----------|
          | Serial port    |   CN3    | Floppy drive        |   CN7    |
          |                |          | interface           |          |
          |----------------+----------+---------------------+----------|
          | Display        |   CN4    |                     |          |
          | controller     |          |                     |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |          Function           | Jumper/Switch |   Position   |
          |-----------------------------+---------------+--------------|
          | » | Hard drive enabled      |     CN8/5     |      On      |
          |---+-------------------------+---------------+--------------|
          |   | Hard drive disabled     |     CN8/5     |     Off      |
          |---+-------------------------+---------------+--------------|
          | » | CPU speed select 8MHz   |     CN8/6     |      On      |
          |---+-------------------------+---------------+--------------|
          |   | CPU speed select 12MHz  |     CN8/6     |     Off      |
          |---+-------------------------+---------------+--------------|
          | » | Video type select boots |     CN8/7     |      On      |
          |   | plasma display in color |               |              |
          |   | mode                    |               |              |
          |---+-------------------------+---------------+--------------|
          |   | Video type select boots |     CN8/7     |     Off      |
          |   | plasma display in       |               |              |
          |   | monochrome mode         |               |              |
          |---+-------------------------+---------------+--------------|
          | » | Factory configured - do |     CN8/8     |     Off      |
          |   | not alter               |               |              |
          |---+-------------------------+---------------+--------------|
          | » | CPU access speed select |      E1       |  pins 1 & 2  |
          |   | 8/12                    |               |    closed    |
          |---+-------------------------+---------------+--------------|
          |   | CPU access speed select |      E1       |  pins 2 & 3  |
          |   | 8                       |               |    closed    |
          |---+-------------------------+---------------+--------------|
          | » | Factory configured - do |      E2       |     N/A      |
          |   | not alter               |               |              |
          |---+-------------------------+---------------+--------------|
          | » | Printer port enabled    |      E7       |  pins 2 & 3  |
          |   |                         |               |    closed    |
          |---+-------------------------+---------------+--------------|
          |   | Printer port disabled   |      E7       |  pins 1 & 2  |
          |   |                         |               |    closed    |
          |---+-------------------------+---------------+--------------|
          | » | Controller address      |      E8       | pins 1 & 2,  |
          |   | select primary          |               | 4 & 5 closed |
          |---+-------------------------+---------------+--------------|
          |   | Controller address      |      E8       | pins 2 & 3,  |
          |   | select secondary        |               | 4 & 5 closed |
          |---+-------------------------+---------------+--------------|
          | » | System ROM select 16KB  |      E10      |  pins 1 & 2  |
          |   |                         |               |    closed    |
          |---+-------------------------+---------------+--------------|
          |   | System ROM select 32KB  |      E10      |  pins 2 & 3  |
          |   |                         |               |    closed    |
          |---+-------------------------+---------------+--------------|
          | » | ROM Set2 enabled        |      E12      |  pins 1 & 2  |
          |   |                         |               |    closed    |
          |---+-------------------------+---------------+--------------|
          |   | ROM Set2 disabled       |      E12      |  pins 2 & 3  |
          |   |                         |               |    closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |      256KB       |    (1) 256K x 9    |        NONE        |
          |------------------+--------------------+--------------------|
          |      512KB       |    (1) 256K x 9    |    (1) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       1MB        |     (1) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |      1.5MB       |     (1) 1M x 9     |    (1) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       2MB        |     (1) 1M x 9     |     (1) 1M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   COM/IRQ CONFIGURATION                    |
          |------------------------------------------------------------|
          |           COM/IRQ           |            E5/E16            |
          |-----------------------------+------------------------------|
          |      COM1/IRQ4 Serial       |      pins 2 & 4 closed       |
          |-----------------------------+------------------------------|
          |       COM1/IRQ4 Modem       |      pins 3 & 4 closed       |
          |-----------------------------+------------------------------|
          |      COM2/IRQ3 Serial       |      pins 1 & 2 closed       |
          |-----------------------------+------------------------------|
          |       COM2/IRQ3 Modem       |      pins 1 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT CONFIGURATION                  |
          |------------------------------------------------------------|
          |          COM port          |             E3/E4             |
          |----------------------------+-------------------------------|
          |        COM1 Serial         |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |         COM1 Modem         |       pins 1 & 3 closed       |
          |----------------------------+-------------------------------|
          |        COM2 Serial         |       pins 1 & 3 closed       |
          |----------------------------+-------------------------------|
          |         COM2 Modem         |       pins 3 & 4 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |           DRAM BASE MEMORY SWITCH CONFIGURATION            |
          |------------------------------------------------------------|
          |        Size        |       CN8/1       |       CN8/2       |
          |--------------------+-------------------+-------------------|
          |        None        |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |       256KB        |        On         |        Off        |
          |--------------------+-------------------+-------------------|
          |       512KB        |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |       640KB        |        Off        |        Off        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |         DRAM EXTENDED MEMORY SWITCH CONFIGURATION          |
          |------------------------------------------------------------|
          | Base memory |    Extended    | CN8 Switch 3 | CN8 Switch 4 |
          |             |     memory     |              |              |
          |-------------+----------------+--------------+--------------|
          |    640KB    |     256KB      |      On      |     Off      |
          |-------------+----------------+--------------+--------------|
          |    640KB    |      1MB       |     Off      |      On      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  DRAM BANK CONFIGURATION                   |
          |------------------------------------------------------------|
          |            Bank            |              E17              |
          |----------------------------+-------------------------------|
          |            None            |   pins 2 & 3, 4 & 5 closed    |
          |----------------------------+-------------------------------|
          |           Bank 1           |   pins 2 & 3, 5 & 6 closed    |
          |----------------------------+-------------------------------|
          |         Bank 1 & 2         |   pins 1 & 2, 4 & 5 closed    |
          |----------------------------+-------------------------------|
          |       Bank 1, 2, & 3       |   pins 1 & 2, 5 & 6 closed    |
          +------------------------------------------------------------+
       
 (IMG) IMG 2
          
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |   512KB    | (2) 256K x 9  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    1MB     | (2) 256K x 9  | (2) 256K x 9  |     NONE      |
          |------------+---------------+---------------+---------------|
          |   1.5MB    | (2) 256K x 9  | (2) 256K x 9  | (2) 256K x 9  |
          |------------+---------------+---------------+---------------|
          |    2MB     |  (2) 1M x 9   |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    4MB     |  (2) 1M x 9   |  (2) 1M x 9   |     NONE      |
          |------------+---------------+---------------+---------------|
          |    6MB     |  (2) 1M x 9   |  (2) 1M x 9   |  (2) 1M x 9   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |              S1               |
          |----------------------------+-------------------------------|
          |          256K x 9          |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |           1M x 9           |       pins 2 & 3 closed       |
          +------------------------------------------------------------+