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       # COMPAQ COMPUTER CORPORATION
       
          PRESARIO 600 SERIES
       
          (LOCAL BUS-486-BASED MODELS)
       
          Processor  80486SX/80487SX/ODP486DX/80486DX/ODP486DX2/80486DX2 
          Processor  25/33/50(internal)/66(internal)MHz                  
          Speed      
          Chip Set   Unidentified                                        
          Max.       56MB                                                
          Onboard    
          DRAM       
          Cache      None                                                
          BIOS       Unidentified                                        
          Dimensions 258mm x 218mm                                       
          I/O        Riser card slot, floppy drive interface, IDE        
          Options    interface, VGA port, serial ports (2), parallel     
                     port, PS/2 mouse port                               
          NPU        None                                                
          Options    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose         | Location |
          |--------------------+----------+-----------------+----------|
          | IDE interface      |    J1    | Serial port 1   |    P2    |
          |--------------------+----------+-----------------+----------|
          | External Battery   |    J5    | Serial port 2   |    P3    |
          |--------------------+----------+-----------------+----------|
          | PS/2 mouse port    |    J7    | VGA port        |    P4    |
          |--------------------+----------+-----------------+----------|
          | Floppy drive       |    J8    | Riser card slot |   SL1    |
          | interface          |          |                 |          |
          |--------------------+----------+-----------------+----------|
          | Parallel port      |    P1    |                 |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Factory configured - do not      |   J2   |    N/A     |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Speaker type select internal     |   J4   | pins 3 & 4 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Speaker type select external     |   J4   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  J12   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  J12   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | I/O address type select          |  J13   |    Open    |
          |   | 398h/399h                        |        |            |
          |---+----------------------------------+--------+------------|
          |   | I/O address type select          |  J13   | pins 1 & 2 |
          |   | 26Eh/26Fh                        |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Battery type select external     |  P14   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Battery type select internal     |  P14   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  P14   |    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 SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |           Speed            |              P8               |
          |----------------------------+-------------------------------|
          |           25MHz            |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           33MHz            |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |           50iMHz           |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           66iMHz           |       pins 1 & 2 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type    |     P7     |    P9     |    P10    |    P11    |
          |-----------+------------+-----------+-----------+-----------|
          |  80486SX  | pins 2 & 3 | pins 1 &  | pins 2 &  | pins 1 &  |
          |           |   closed   | 2 closed  | 3 closed  | 2 closed  |
          |-----------+------------+-----------+-----------+-----------|
          |  80487SX  | pins 2 & 3 | pins 1 &  | pins 2 &  | pins 2 &  |
          |           |   closed   | 2 closed  | 3 closed  | 3 closed  |
          |-----------+------------+-----------+-----------+-----------|
          | ODP486DX  | pins 2 & 3 | pins 1 &  | pins 2 &  | pins 2 &  |
          |           |   closed   | 2 closed  | 3 closed  | 3 closed  |
          |-----------+------------+-----------+-----------+-----------|
          |  80486DX  | pins 2 & 3 | pins 1 &  | pins 2 &  | pins 1 &  |
          |           |   closed   | 2 closed  | 3 closed  | 2 closed  |
          |-----------+------------+-----------+-----------+-----------|
          | ODP486DX2 | pins 2 & 3 | pins 1 &  | pins 2 &  | pins 2 &  |
          |           |   closed   | 2 closed  | 3 closed  | 3 closed  |
          |-----------+------------+-----------+-----------+-----------|
          | 80486DX2  | pins 2 & 3 | pins 1 &  | pins 2 &  | pins 1 &  |
          |           |   closed   | 2 closed  | 3 closed  | 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                ON-BOARD VIDEO CONFIGURATION                |
          |------------------------------------------------------------|
          |  On-board Video  |         P5         |         P6         |
          |------------------+--------------------+--------------------|
          |     Disabled     | pins 1 & 2 closed  | pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |     Enabled      | pins 1 & 2 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+