(TXT) View Source
       
       # DELL COMPUTER CORPORATION
       
          486/MT
       
          Processor    80486SX/80486SX2/80486DX/80486DX2/80486DX4        
          Processor    25/33/50(internal)/66(internal)/100(internal)MHz  
          Speed        
          Chip Set     OPTI                                              
          Max. Onboard 64MB                                              
          DRAM         
          Cache        128/256KB                                         
          BIOS         Phoenix                                           
          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), VGA feature         
                       connector, VGA port                               
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | PS/2 mouse port   |   CN1    | VGA port         |   CN8    |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   CN2    | VGA feature      |   CN9    |
          |                   |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |   CN3    | Reset switch     |    J1    |
          |-------------------+----------+------------------+----------|
          | External battery  |   CN4    | Power LED &      |    J2    |
          |                   |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   CN5    | Speaker          |    J3    |
          |-------------------+----------+------------------+----------|
          | IDE interface     |   CN6    | IDE interface    |    J4    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   CN7    | 32-bit VESA      |  SL1 &   |
          | interface         |          | Local bus slots  |   SL2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Jumper  | Position |
          |---------------------------------------+---------+----------|
          | » | On board VGA enabled              |   JP1   |   Open   |
          |---+-----------------------------------+---------+----------|
          |   | On board VGA disabled             |   JP1   |  Closed  |
          |---+-----------------------------------+---------+----------|
          | » | RAMDAC shadow disabled            |   JP2   |   Open   |
          |---+-----------------------------------+---------+----------|
          |   | RAMDAC shadow enabled             |   JP2   |  Closed  |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |   JP3   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |   JP4   |  Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |  Size   |        JP8        |        JP9        |   JP12   |
          |---------+-------------------+-------------------+----------|
          |  128KB  | pins 1 & 2 closed | pins 1 & 2 closed |   Open   |
          |---------+-------------------+-------------------+----------|
          |  256KB  | pins 2 & 3 closed | pins 2 & 3 closed |  Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |  JP10  |  JP13  |       JP14       |    JP15    |
          |----------+--------+--------+------------------+------------|
          | 80486SX  | Closed |  Open  |       Open       | pins 2 & 3 |
          |          |        |        |                  |   closed   |
          |----------+--------+--------+------------------+------------|
          | 80486SX2 | Closed | Closed |       Open       | pins 2 & 3 |
          |          |        |        |                  |   closed   |
          |----------+--------+--------+------------------+------------|
          | 80486DX  | Closed | Closed |    pins 1 & 2    | pins 1 & 2 |
          |          |        |        |      closed      |   closed   |
          |----------+--------+--------+------------------+------------|
          | 80486DX2 | Closed | Closed |    pins 1 & 2    | pins 1 & 2 |
          |          |        |        |      closed      |   closed   |
          |----------+--------+--------+------------------+------------|
          | 80486DX4 | Closed | Closed |    pins 1 & 2    | pins 1 & 2 |
          |          |        |        |      closed      |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |     Speed     |     JP5      |     JP6      |     JP7      |
          |---------------+--------------+--------------+--------------|
          |     25MHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     33MHz     |     Open     |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    50iMHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    66iMHz     |     Open     |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    100iMHz    |     Open     |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          |     Size      |        Bank 0        |       Bank 1        |
          |---------------+----------------------+---------------------|
          |     512KB     |     (4) 256K x 4     |        NONE         |
          |---------------+----------------------+---------------------|
          |      1MB      |     (4) 256K x 4     |    (4) 256K x 4     |
          |------------------------------------------------------------|
          | Note: Bank 0 is factory installed and is not configurable. |
          +------------------------------------------------------------+