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       # MICRONICS COMPUTERS, INC.
       
          JX30Gc VL-BUS
       
          Processor    80486SX/80486DX/80486DX2/80486DX4/Pentium         
                       Overdrive                                         
          Processor    25/33/50(internal)/66(internal)/100(internal)MHz  
          Speed        
          Chip Set     Micronics                                         
          Max. Onboard 64MB                                              
          DRAM         
          Cache        64/128/256KB                                      
          BIOS         Phoenix                                           
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (2), floppy drive     
                       interface, IDE interface (2), parallel port,      
                       serial ports (2)                                  
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | External battery  |    J8    | Power LED &      |   J31    |
          |                   |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |    J9    | IDE interface -  |   J32    |
          |                   |          | secondary        |          |
          |-------------------+----------+------------------+----------|
          | External keyboard |   J13    | 32-bit VESA      | S1 & S2  |
          |                   |          | Local bus slots  |          |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   J14    | Turbo LED        |   W18    |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   J16    | Turbo switch     |   W19    |
          |-------------------+----------+------------------+----------|
          | IDE interface -   |   J26    | Reset switch     |   W20    |
          | primary           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   J27    | IDE interface    |   W21    |
          | interface         |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |   J30    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/3     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/4     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Real time clock installed |      W1       |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Real time clock not       |      W1       |    Open    |
          |   | installed                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Monitor type select color |      W2       |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select       |      W2       |    Open    |
          |   | monochrome                |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W3       |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Parity enabled            |      W4       |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Parity disabled           |      W4       |    Open    |
          |---+---------------------------+---------------+------------|
          | » | CMOS memory normal        |      W5       |    Open    |
          |   | operation                 |               |            |
          |---+---------------------------+---------------+------------|
          |   | CMOS memory clear         |      W5       |   Closed   |
          |---+---------------------------+---------------+------------|
          | » | Normal operation          |      W8       | pins 2 & 3 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | BIOS recovery enabled     |      W8       | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Primary IDE (J26) enabled |      W34      | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Primary IDE (J26)         |      W34      | pins 2 & 3 |
          |   | disabled                  |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Parallel port select IRQ7 |      W36      | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Parallel port select IRQ5 |      W36      | pins 2 & 3 |
          |   |                           |               |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size   |    Bank 0    |  Bank 1   |   TAG    |  TAG/U61   |
          |---------+--------------+-----------+----------+------------|
          |  64KB   |  (4) 8K x 8  | (4) 8K x  | (1) 8K x | (1) 8K x 8 |
          |         |              |     8     |    8     |            |
          |---------+--------------+-----------+----------+------------|
          |  128KB  | (4) 32K x 8  |   NONE    | (1) 32K  | (1) 32K x  |
          |         |              |           |   x 8    |     8      |
          |---------+--------------+-----------+----------+------------|
          |  256KB  | (4) 32K x 8  | (4) 32K x | (1) 32K  | (1) 32K x  |
          |         |              |     8     |   x 8    |     8      |
          |------------------------------------------------------------|
          | Note:If Write-Through caching is not being used, the chip  |
          | at U61 is not installed.                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size   |   W10    |   W11    |   W22   |  W23   |  W24   |
          |----------+----------+----------+---------+--------+--------|
          |   64KB   |  1 & 2   |  1 & 2   |  2 & 3  | 2 & 3  | 1 & 2  |
          |----------+----------+----------+---------+--------+--------|
          |  128KB   |  1 & 2   |  2 & 3   |  1 & 2  | 1 & 2  | 2 & 3  |
          |----------+----------+----------+---------+--------+--------|
          |  256KB   |  2 & 3   |  2 & 3   |  2 & 3  | 2 & 3  | 2 & 3  |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CACHING METHOD CONFIGURATION                |
          |------------------------------------------------------------|
          |    Method     | Size  |       W16        |       W17       |
          |---------------+-------+------------------+-----------------|
          | Write-Through |  All  |       Open       |      Open       |
          |---------------+-------+------------------+-----------------|
          |  Write-Back   | 64KB  |    pins 1 & 2    |   pins 1 & 2    |
          |               |       |      closed      |     closed      |
          |---------------+-------+------------------+-----------------|
          |  Write-Back   | 128KB |    pins 1 & 2    |   pins 2 & 3    |
          |               |       |      closed      |     closed      |
          |---------------+-------+------------------+-----------------|
          |  Write-Back   | 256KB |    pins 2 & 3    |   pins 2 & 3    |
          |               |       |      closed      |     closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 1MB  | (1) 256K x  |    NONE     |    NONE    |    NONE    |
          |      |     36      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (1) 256K x  | (1) 256K x  |    NONE    |    NONE    |
          |      |     36      |     36      |            |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (1) 256K x  | (1) 256K x  |  (1) 1M x  |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 10MB | (1) 256K x  | (1) 256K x  |  (1) 1M x  |  (1) 1M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 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    |
          |------+-------------+-------------+------------+------------|
          | 18MB | (1) 256K x  | (1) 256K x  |  (1) 4M x  |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 1M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |        Type        |        W12        |        W13        |
          |--------------------+-------------------+-------------------|
          |      80486SX       | pins 1 & 2 closed | pins 2 & 3 closed |
          |--------------------+-------------------+-------------------|
          |      80486DX       | pins 2 & 3 closed | pins 2 & 3 closed |
          |--------------------+-------------------+-------------------|
          |     804896DX2      | pins 2 & 3 closed | pins 2 & 3 closed |
          |--------------------+-------------------+-------------------|
          | Pentium Overdrive  | pins 2 & 3 closed | pins 1 & 2 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Speed        |       SW1/1       |       SW1/2       |
          |--------------------+-------------------+-------------------|
          |       25MHz        |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |       33MHz        |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |       50iMHz       |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |       66iMHz       |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |       75iMHz       |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |      100iMHz       |        On         |        On         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            PARALLEL PORT CHANNEL CONFIGURATION             |
          |------------------------------------------------------------|
          |     Channel      |        W37         |        W38         |
          |------------------+--------------------+--------------------|
          | » |     NONE     |        Open        |        Open        |
          |---+--------------+--------------------+--------------------|
          |   |     DMA1     | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |---+--------------+--------------------+--------------------|
          |   |     DMA3     | pins 2 & 3 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            SECONDARY IDE CHANNEL CONFIGURATION             |
          |------------------------------------------------------------|
          |     Channel      |        W39         |        W40         |
          |------------------+--------------------+--------------------|
          | » |     NONE     |        Open        |        Open        |
          |---+--------------+--------------------+--------------------|
          |   |     DMA6     | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |---+--------------+--------------------+--------------------|
          |   |     DMA7     | pins 2 & 3 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+