(TXT) View Source
       
       # DELL COMPUTER CORPORATION
       
          SYSTEM V486/XX SDT REV. 3
       
          Processor    80486SX/80486DX/80486DX2                          
          Processor    25/33/50(internal)/66(internal)MHz                
          Speed        
          Chip Set     LSI                                               
          Max. Onboard 64MB                                              
          DRAM         
          Cache        None                                              
          BIOS         Unidentified                                      
          Dimensions   330mm x 218mm                                     
          I/O Options  Floppy drive interface, IDE interface, parallel   
                       port, PS/2 mouse port, serial ports (2), VGA port 
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | Parallel port    |   CN1    | IDE interface     |   CN5    |
          | connector        |          |                   |          |
          |------------------+----------+-------------------+----------|
          | Serial port 1    |   CN2    | VGA connector     |   CN6    |
          |------------------+----------+-------------------+----------|
          | Serial port 2    |   CN2    | Fan connector     |   CN7    |
          |------------------+----------+-------------------+----------|
          | PS/2 mouse port  |   CN3    | IDE interface LED |   CN8    |
          |------------------+----------+-------------------+----------|
          | Floppy drive     |   CN4    | External battery  |   CN9    |
          | interface        |          | connector         |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Jumper  | Position |
          |---------------------------------------+---------+----------|
          | » | Mouse connector enabled at IRQ12  |   J1    |  Closed  |
          |---+-----------------------------------+---------+----------|
          |   | Mouse connector disabled          |   J1    |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | I/O address is 26Eh-26Fh          |   J2    |  Closed  |
          |---+-----------------------------------+---------+----------|
          |   | I/O address is 398h-399h          |   J2    |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured do not alter   |   J3    |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured do not alter   |   J4    |  Closed  |
          |---+-----------------------------------+---------+----------|
          | » | Enables password feature          |   J5    |  Closed  |
          |---+-----------------------------------+---------+----------|
          |   | Disables password feature         |   J5    |  Closed  |
          |---+-----------------------------------+---------+----------|
          | » | Enables on-board VGA controller   |   J6    |  Closed  |
          |---+-----------------------------------+---------+----------|
          |   | Disables on-board VGA controller  |   J6    |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured do not alter   |   J7    |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured do not alter   |   J10   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured do not alter   |   J11   |   Open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 4M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 28MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 52MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Speed        |        J8         |        J9         |
          |--------------------+-------------------+-------------------|
          |       25MHz        |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |       33MHz        |      Closed       |       Open        |
          |--------------------+-------------------+-------------------|
          |       50iMHz       |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |       66iMHz       |      Closed       |       Open        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     VRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |      Size       |       Bank 0        |       Bank 1       |
          |-----------------+---------------------+--------------------|
          |      512K       |    (4) 256K x 4     |        None        |
          |-----------------+---------------------+--------------------|
          |       1MB       |    (4) 256K x 4     |    (4) 256K x 4    |
          |------------------------------------------------------------|
          | Note:Bank 0 is factory installed and not configurable.     |
          +------------------------------------------------------------+