(TXT) View Source
       
       # YOUNG MICRO SYSTEMS, INC.
       
          VS486S
       
          Processor         80486SX/80486DX/80486DX2                     
          Processor Speed   25/33/40/50(internal)/66(internal)MHz        
          Chip Set          Symphony                                     
          Max. Onboard DRAM 64MB                                         
          Cache             64/256KB                                     
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          I/O Options       None                                         
          NPU Options       4167                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | Speaker             |   CN1    | Turbo LED      |   CN4    |
          |---------------------+----------+----------------+----------|
          | Power LED & keylock |   CN2    | Turbo switch   |   CN5    |
          |---------------------+----------+----------------+----------|
          | Reset switch        |   CN3    |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 1MB  | (4) 256K x  |    NONE     |    NONE    |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (4) 256K x  | (4) 256K x  |    NONE    |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (4) 1M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 5MB  | (4) 1M x 9  | (4) 256K x  |    NONE    |    NONE    |
          |      |             |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (4) 1M x 9  | (4) 1M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 4M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (4) 4M x 9  | (4) 4M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 48MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 64MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 | (4) 4M x 9 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CACHE CONFIGURABLE                     |
          |------------------------------------------------------------|
          |            Size            |             Cache             |
          |----------------------------+-------------------------------|
          |            64KB            |          (9) 8K x 8           |
          |----------------------------+-------------------------------|
          |           256KB            |          (9) 32K x 8          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size    |       J2       |      J5       |      J8       |
          |-----------+----------------+---------------+---------------|
          |   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     |
          |------------------------------------------------------------|
          | Note:This board is direct but not user upgradable and has  |
          | two factory defauts to incorporate the    486DX/33MHz or   |
          | 486DX/50MHz.                                               |
          +------------------------------------------------------------+