(TXT) View Source
       
       # DELL COMPUTER CORPORATION
       
          SYSTEM XPS 50/66 FS/MDT
       
          Processor    80486DX2                                          
          Processor    50(internal)/66(internal)MHz                      
          Speed        
          Chip Set     MIC                                               
          Max. Onboard 64MB                                              
          DRAM         
          Cache        128/256KB                                         
          BIOS         Unidentified                                      
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (2), floppy drive     
                       interface, IDE interface, parallel port, PS/2     
                       mouse port, serial ports (2)                      
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | PS/2 mouse port   |   CN1    | Serial port 2    |   J16    |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   CN2    | Speaker          |   J33    |
          | interface         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | IDE interface     |   CN3    | Power LED &      |   J34    |
          |                   |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | External battery  |   CN4    | IDE interface    |   W11    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   J12    | Reset switch     |   W12    |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   J15    | 32-bit VESA      |  J29 &   |
          |                   |          | Local bus slots  |   J30    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | Factory configured - do   |      W1       |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Parallel port             |      W5       | pins 2 & 3 |
          |   | bidirectional             |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Parallel port             |      W5       | pins 1 & 2 |
          |   | unidirectional (printer)  |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Monitor type select color |      W6       |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select       |      W6       |    Open    |
          |   | monochrome                |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W7       |   Closed   |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W8       | pins 2 & 3 |
          |   | not alter                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W20      | pins 2 & 3 |
          |   | not alter                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W31      |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W40      | pins 2 & 3 |
          |   | not alter                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W70      | pins 2 & 3 |
          |   | not alter                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W71      |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/2     |   Closed   |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/3     |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/4     |    Open    |
          |   | not alter                 |               |            |
          |------------------------------------------------------------|
          | Note: The locations of the factory confugured jumpers is   |
          | unidentified.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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) 1M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M 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     |            |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (2) 16K x 8  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (2) 16K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size   |   W64    |   W65    |   W66   |  W67   |  W68   |
          |----------+----------+----------+---------+--------+--------|
          |  128KB   |  2 & 3   |  1 & 2   |  1 & 2  | 1 & 2  | 2 & 3  |
          |----------+----------+----------+---------+--------+--------|
          |  256KB   |  2 & 3   |  2 & 3   |  2 & 3  | 2 & 3  | 2 & 3  |
          |------------------------------------------------------------|
          | Note: pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          | Speed  | SW1/1  |    SW1/2     |    SW1/3    |    SW1/4    |
          |--------+--------+--------------+-------------+-------------|
          | 50iMHz | Closed |   Factory    |   Factory   |   Factory   |
          |        |        |  configured  | configured  | configured  |
          |--------+--------+--------------+-------------+-------------|
          | 66iMHz |  Open  |   Factory    |   Factory   |   Factory   |
          |        |        |  configured  | configured  | configured  |
          +------------------------------------------------------------+