(TXT) View Source
       
       # ELITEGROUP COMPUTER SYSTEMS, INC.
       
          UM 486/486SX
       
          Processor         80486SX/80487SX/80486DX                      
          Processor Speed   20/25/33/50MHz                               
          Chip Set          UMC                                          
          Max. Onboard DRAM 32MB                                         
          Cache             32/64/128/256KB                              
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          I/O Options       None                                         
          NPU Options       4167                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |    J1    | Reset switch      |    J4    |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |    J2    | Speaker           |    J5    |
          |------------------+----------+-------------------+----------|
          | Turbo switch     |    J3    | Power LED &       |    J6    |
          |                  |          | keylock           |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Monitor type select color        |  JP1   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP1   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Power good signal detect from    |  JP2   | pins 1 & 2 |
          |   | power supply                     |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Power good signal detect from    |  JP2   | pins 2 & 3 |
          |   | board                            |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       1MB        |    (4) 256K x 9    |        NONE        |
          |------------------+--------------------+--------------------|
          |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       5MB        |    (4) 256K x 9    |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |   Bank 1   |  TAG/U34 -  |   Dirty   |
          |       |             |            |     U37     |  Bit/U38  |
          |-------+-------------+------------+-------------+-----------|
          | 32KB  | (4) 8K x 8  |    NONE    | (4) 16K x 4 | (1) 16K x |
          |       |             |            |             |     1     |
          |-------+-------------+------------+-------------+-----------|
          | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (4) 16K x 4 | (1) 16K x |
          |       |             |            |             |     1     |
          |-------+-------------+------------+-------------+-----------|
          | 128KB | (4) 32K x 8 |    NONE    | (4) 16K x 4 | (1) 16K x |
          |       |             |            |             |     1     |
          |-------+-------------+------------+-------------+-----------|
          | 256KB | (4) 32K x 8 | (4) 32K x  | (4) 16K x 4 | (1) 16K x |
          |       |             |     8      |             |     1     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |    JP10    |   JP11   |   JP12   |  JP14  |  JP15  |
          |-------+------------+----------+----------+--------+--------|
          | 32KB  | pins 2 & 3 |   Open   | pins 1 & | pins 1 | pins 1 |
          |       |            |          |    2     |  & 2   |  & 2   |
          |-------+------------+----------+----------+--------+--------|
          | 64KB  | pins 1 & 2 |   Open   | pins 1 & | pins 2 | pins 1 |
          |       |            |          |    2     |  & 3   |  & 2   |
          |-------+------------+----------+----------+--------+--------|
          | 128KB | pins 2 & 3 | pins 1 & | pins 1 & | pins 2 | pins 2 |
          |       |            |    2     |    2     |  & 3   |  & 3   |
          |-------+------------+----------+----------+--------+--------|
          | 256KB | pins 1 & 2 | pins 2 & | pins 2 & | pins 2 | pins 2 |
          |       |            |    3     |    3     |  & 3   |  & 3   |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |  Type   |        JP5        |    JP6     |  JP8   |  JP16  |
          |---------+-------------------+------------+--------+--------|
          | 80486SX | pins 1 & 2 closed | pins 2 & 3 |  Open  |  Open  |
          |         |                   |   closed   |        |        |
          |---------+-------------------+------------+--------+--------|
          | 80487SX | pins 2 & 3 closed | pins 1 & 2 | Closed | Closed |
          |         |                   |   closed   |        |        |
          |---------+-------------------+------------+--------+--------|
          | 80486DX | pins 1 & 2 closed | pins 1 & 2 | Closed |  Open  |
          |         |                   |   closed   |        |        |
          +------------------------------------------------------------+