DELL COMPUTER CORPORATION
=========================

   DIMENSION XPS XXX

   Processor    80486DX2/80486DX4                                 
   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 (2), parallel port, PS/2 
                mouse port, serial ports (2)                      
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/C-D/34043-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Serial port 1    |   CN1    | Parallel port     |   J16    |
   |------------------+----------+-------------------+----------|
   | IDE interface 1  |   CN2    | Speaker           |   J33    |
   |------------------+----------+-------------------+----------|
   | IDE interface 2  |   CN3    | Power LED &       |   J34    |
   |                  |          | keylock           |          |
   |------------------+----------+-------------------+----------|
   | Floppy drive     |   CN4    | IDE interface LED |   W11    |
   | interface        |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Serial port 2    |   CN5    | Reset switch      |   W12    |
   |------------------+----------+-------------------+----------|
   | PS/2 mouse port  |   J13    | 32-bit VESA Local |  J29 &   |
   |                  |          | bus slots         |   J30    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | Factory configured - do   |      W1       |   Closed   |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select color |      W2       |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select       |      W2       |    Open    |
   |   | monochrome                |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Mouse IRQ12 enabled       |      W3       |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | Mouse IRQ12 disabled      |      W3       |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | Clear NVRAM disabled      |      W5       |    Open    |
   |---+---------------------------+---------------+------------|
   |   | Clear NVRAM enabled       |      W5       |   Closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W8       | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W10      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W11      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Processor is Intel486 DX, |      W12      | Pins 1 & 2 |
   |   | DX2, DX4, Pentium or      |               |   closed   |
   |   | Pentium Pro               |               |            |
   |---+---------------------------+---------------+------------|
   |   | Processor is Intel486 SX  |      W12      | Pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W13      |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W16      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W17      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W18      |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W19      |   Closed   |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W22      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W23      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W24      | Pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W25      |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | IDE port 1 enabled        |      W34      | Pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | IDE port 1 disabled       |      W34      | Pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W35      |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Parallel port IRQ = 7     |      W36      | Pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Parallel port IRQ = 5     |      W36      | Pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | ECP DMA = 3               |      W37      | Pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | ECP DMA = 1               |      W37      | Pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | ECP DMA = 3               |      W38      | Pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | ECP DMA = 1               |      W38      | Pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W39      |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      W40      |    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  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | Speed  | SW1/1  |    SW1/2     |    SW1/3    |    SW1/4    |
   |--------+--------+--------------+-------------+-------------|
   | 50iMHz |  Open  |   Factory    |   Factory   |   Factory   |
   |        |        |  configured  | configured  | configured  |
   |--------+--------+--------------+-------------+-------------|
   | 66iMHz | Closed |   Factory    |   Factory   |   Factory   |
   |        |        |  configured  | configured  | configured  |
   +------------------------------------------------------------+