(TXT) View Source
       
       # MICROMEDIA TECHNOLOGIES, INC.
       
          486-S
       
          Processor         80486SX/80486DX/80486DX2                     
          Processor Speed   20/25/33/50(internal)MHz                     
          Chip Set          SIS                                          
          Max. Onboard DRAM 32MB                                         
          Cache             32/64/128/256KB                              
          BIOS              AMI                                          
          Dimensions        230mm x 218mm                                
          I/O Options       None                                         
          NPU Options       None                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   CN1    | Turbo LED        |   CN4    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |   CN2    | Reset switch     |   CN5    |
          |-------------------+----------+------------------+----------|
          | Turbo switch      |   CN3    | External battery |   CN6    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP10  | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP10  | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  JP13  |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP13  |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Power good signal detect from    |  JP17  | pins 1 & 2 |
          |   | board                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Power good signal detect from    |  JP17  | pins 2 & 3 |
          |   | power supply                     |        |   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        |
          |------------------+--------------------+--------------------|
          |       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      |
          |------------+---------------+---------------+---------------|
          |    32KB    |  (4) 8K x 8   |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |Size | JP1  | JP2 | JP3 | JP4 | JP5 | JP6 | JP7 | JP8 | JP9 |
          |-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
          |32KB |1 & 2 |1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|
          |-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
          |64KB |1 & 2 |1 & 2|2 & 3|2 & 3|1 & 2|1 & 2|1 & 2|2 & 3|2 & 3|
          |-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
          |128KB|2 & 3 |1 & 2|2 & 3|2 & 3|2 & 3|1 & 2|2 & 3|1 & 2|1 & 2|
          |-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
          |256KB|2 & 3 |2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|
          |------------------------------------------------------------|
          |Note:Pins designated should be in the closed position.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |  JP14   |       JP15        |       JP16        |
          |----------+---------+-------------------+-------------------|
          | 80486SX  |  Open   | pins 2 & 3 closed | pins 2 & 3 closed |
          |----------+---------+-------------------+-------------------|
          | 80487SX  | Closed  | pins 1 & 2 closed | pins 2 & 3 closed |
          |----------+---------+-------------------+-------------------|
          | 80486DX  | Closed  | pins 1 & 2 closed | pins 1 & 2 closed |
          +------------------------------------------------------------+