(TXT) View Source
       
       # DELL COMPUTER CORPORATION
       
          SYSTEM V486/XX REV. 1
       
          Processor         80486SX/80486DX/80486DX2/Overdrive           
          Processor Speed   25/33/50(internal)/66(internal)MHz           
          Chip Set          Opti                                         
          Max. Onboard DRAM 32MB                                         
          Cache             64/256KB                                     
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          NPU Options       None                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |    J9    | Speaker           |   J21    |
          |------------------+----------+-------------------+----------|
          | External battery |   J18    | Power LED and     |   J22    |
          |                  |          | keylock           |          |
          |------------------+----------+-------------------+----------|
          | Turbo Switch     |   J20    |                   |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Battery type select - internal   |   W1   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Battery type select - external   |   W1   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |   W2   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |   W2   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |   W3   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |   W4   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  W12   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  W12   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  W13   |    Open    |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            64KB            |          (8) 16K x4           |
          |----------------------------+-------------------------------|
          |           256KB            |          (8) 32K x 8          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |       W8        |       W9        |      W10       |
          |-------+-----------------+-----------------+----------------|
          |  0KB  |      Open       |      Open       |      Open      |
          |-------+-----------------+-----------------+----------------|
          | 64KB  |   pins 2 & 3    |   pins 2 & 3    |   pins 2 & 3   |
          |       |     closed      |     closed      |     closed     |
          |-------+-----------------+-----------------+----------------|
          | 256KB |   pins 1 & 2    |   pins 1 & 2    |   pins 1 & 2   |
          |       |     closed      |     closed      |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      CPU TYPE SELECT                       |
          |------------------------------------------------------------|
          | CPU type  |       W5       |      W6       |      W7       |
          |-----------+----------------+---------------+---------------|
          |   486SX   |   pins 2 & 3   |  pins 2 & 3   |     Open      |
          |           |     closed     |    closed     |               |
          |-----------+----------------+---------------+---------------|
          |   487SX   |   pins 1 & 2   |  pins 1 & 2   |  pins 1 & 2   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          |   486DX   |   pins 1 & 2   |  pins 1 & 2   |  pins 2 & 3   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          |  486DX2   |   pins 1 & 2   |  pins 1 & 2   |  pins 2 & 3   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          | Overdrive |   pins 1 & 2   |  pins 1 & 2   |  pins 1 & 2   |
          |           |     closed     |    closed     |    closed     |
          +------------------------------------------------------------+