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       # COMPAQ COMPUTER CORPORATION
       
          PRESARIO 600 SERIES (486-BASED MODELS)
       
          Processor    OPP486DX/80486DX2                                 
          Processor    50/50 (internal)/66(internal)MHz                  
          Speed        
          Chip Set     Unidentified                                      
          Max. Onboard 56MB                                              
          DRAM         
          Cache        None                                              
          BIOS         Unidentified                                      
          Dimensions   258 x 218mm                                       
          I/O Options  IDE interface, riser card slot, floppy drive      
                       interface, parallel port, PS/2 mouse port, serial 
                       ports (2), VGA port                               
          NPU Options  80487                                             
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose         | Location |
          |--------------------+----------+-----------------+----------|
          | Speaker connector  |    J1    | Serial port 1   |   P21    |
          |--------------------+----------+-----------------+----------|
          | PS/2 mouse port    |    J2    | Parallel port   |   P22    |
          |--------------------+----------+-----------------+----------|
          | Floppy Drive       |    J4    | Serial port 2   |   P23    |
          | Interface          |          |                 |          |
          |--------------------+----------+-----------------+----------|
          | IDE interface      |    J6    | VGA port        |   P24    |
          |--------------------+----------+-----------------+----------|
          | IDE interface LED  |   J10    | Riser card slot |   SL1    |
          |--------------------+----------+-----------------+----------|
          | Battery connector  |   J53    |                 |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Jumper |   Position   |
          |------------------------------------+--------+--------------|
          | » | Monitor type select monochrome |   P4   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | Monitor type select color      |   P4   |     Open     |
          |---+--------------------------------+--------+--------------|
          | » | I/O address select 398h/399h   |   P5   |     Open     |
          |---+--------------------------------+--------+--------------|
          |   | I/O address select 26Eh/26Fh   |   P5   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | Speaker select internal        |   P8   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | Speaker select external        |   P8   |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | Battery type select external   |  P52   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | Battery type select internal   |  P52   |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | CMOS memory clear              |  P52   |     Open     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 256K x  | (1) 256K x  | (1) 256K x | (1) 256K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 512K x  | (1) 512K x  |    NONE    |    NONE    |
          |      |     36      |     36      |            |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (1) 512K x  | (1) 512K x  | (1) 512K x |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (1) 512K x  | (1) 512K x  | (1) 256K x | (1) 256K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (1) 256K x  | (1) 256K x  | (1) 512K x | (1) 512K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 512K x  | (1) 512K x  | (1) 512K x | (1) 512K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 2M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 10MB | (1) 256K x  | (1) 256K x  |  (1) 1M x  |  (1) 1M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 512K x | (1) 512K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 512K x  | (1) 512K x  |  (1) 1M x  |  (1) 1M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 2M x 36 | (1) 2M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 18MB | (1) 2M x 36 | (1) 2M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 18MB | (1) 256K x  | (1) 256K x  |  (1) 2M x  |  (1) 2M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 2M x 36 | (1) 2M x 36 | (1) 512K x | (1) 512K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 512K x  | (1) 512K x  |  (1) 2M x  |  (1) 2M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 2M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 8M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 34MB | (1) 256K x  | (1) 256K x  |  (1) 4M x  |  (1) 4M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 512K x | (1) 512K x |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 512K x  | (1) 512K x  |  (1) 4M x  |  (1) 4M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 56MB | (1) 8M x 36 | (1) 4M x 36 |  (1) 2M x  |    NONE    |
          |      |             |             |     36     |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |  CPU type   |    P1     |    P2     |    P3     |   P11    |
          |-------------+-----------+-----------+-----------+----------|
          | 80486DX2-50 | pins 1 &  | pins 2 &  | pins 1 &  | pins 2 & |
          |             | 2 closed  | 3 closed  | 2 closed  | 3 closed |
          |-------------+-----------+-----------+-----------+----------|
          |  ODP486-50  | pins 1 &  | pins 2 &  | pins 2 &  | pins 2 & |
          |             | 2 closed  | 3 closed  | 3 closed  | 3 closed |
          |-------------+-----------+-----------+-----------+----------|
          | 80486DX2-66 | pins 1 &  | pins 2 &  | pins 1 &  | pins 2 & |
          |             | 2 closed  | 3 closed  | 2 closed  | 3 closed |
          |------------------------------------------------------------|
          | Note: The location of P11 is unidentified.                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                ON-BOARD VIDEO CONFIGURATION                |
          |------------------------------------------------------------|
          |     Setting      |        P50         |        P51         |
          |------------------+--------------------+--------------------|
          |     Disabled     | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |     Enabled      | pins 2 & 3 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               VESA VAIT STATE CONFIGURATION                |
          |------------------------------------------------------------|
          |        Wait states         |              P6               |
          |----------------------------+-------------------------------|
          |       0 wait states        |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |       1 wait states        |             Open              |
          +------------------------------------------------------------+