(TXT) View Source
       
       # MICRONICS COMPUTERS, INC.
       
          ZIF SOCKET SYSTEM BOARD
       
          Processor    80486SX/80486DX/80486DX2/Pentium Overdrive        
          Processor    25/33/50(internal)66/(internal)MHz                
          Speed        
          Chip Set     Intel                                             
          Max. Onboard 64MB                                              
          DRAM         
          Cache        64/128/256KB                                      
          BIOS         AMI                                               
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (2), floppy drive     
                       interface, IDE interface, parallel port,          
                                                                         
                       serial ports (2)                                  
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   CN1    | Speaker          |   J33    |
          | interface         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | IDE interface     |   CN2    | Power LED &      |   J34    |
          |                   |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | External battery  |    J8    | IDE interface    |   W11    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | External keyboard |   J10    | Reset switch     |   W12    |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   J12    | Turbo LED        |   W13    |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   J15    | Turbo switch     |   W14    |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |   J16    | 32-bit VESA      |  SL1 &   |
          |                   |          | Local bus slots  |   SL2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/2     |     On     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/3     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/4     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Clock type select         |      W1       |    Open    |
          |   | Motorola 126818           |               |            |
          |---+---------------------------+---------------+------------|
          |   | Clock type select Dallas  |      W1       |   Closed   |
          |---+---------------------------+---------------+------------|
          | » | Parallel port             |      W5       | pins 1 & 2 |
          |   | unidirectional (printer)  |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Parallel port             |      W5       | pins 2 & 3 |
          |   | bidirectional             |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Monitor type select color |      W6       |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select       |      W6       |    Open    |
          |   | monochrome                |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W7       |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | CMOS memory normal        |      W8       | pins 2 & 3 |
          |   | operation                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | CMOS memory clear         |      W8       | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W20      |   Closed   |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W28      |   Closed   |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Battery normal operation  |      W31      |    Open    |
          |   | (Dallas)                  |               |            |
          |---+---------------------------+---------------+------------|
          |   | Battery memory clear      |      W31      |   Closed   |
          |   | (Dallas)                  |               |            |
          |---+---------------------------+---------------+------------|
          | » | Local bus parity enabled  |      W40      |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Local bus disabled        |      W40      |    Open    |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W61      |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      W62      |    Open    |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | CPU type select           |      W70      | pins 2 & 3 |
          |   | 80486DX/DX2/Pentium       |               |   closed   |
          |   | Overdrive                 |               |            |
          |---+---------------------------+---------------+------------|
          |   | CPU type select 80486SX   |      W70      | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | CPU type select PQFP      |      W71      | pins 1 & 2 |
          |   | installed with PGA        |               |   closed   |
          |   | Pentium Overdrive         |               |            |
          |---+---------------------------+---------------+------------|
          |   | CPU type select PQFP      |      W71      | pins 2 & 3 |
          |   | installed with PGA        |               |   closed   |
          |   | 80486DX/DX2               |               |            |
          |------------------------------------------------------------|
          | Note: The location of jumpers W20, W28, W61 & W62 are      |
          | unidentified.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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      |            |            |
          |------+-------------+-------------+------------+------------|
          | 3MB  | (1) 256K x  | (1) 256K x  | (1) 256K x |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 256K x  | (1) 256K x  | (1) 256K x | (1) 256K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 5MB  | (1) 256K x  | (1) 1M x 36 |    NONE    |    NONE    |
          |      |     36      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (1) 256K x  | (1) 256K x  |  (1) 1M x  |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 7MB  | (1) 256K x  | (1) 256K x  | (1) 256K x |  (1) 1M x  |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 9MB  | (1) 256K x  | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |     36      |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 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     |            |
          |------+-------------+-------------+------------+------------|
          | 13MB | (1) 256K x  | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |     36      |             |     36     |     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    |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 1M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 28MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 4M x  |
          |      |             |             |     36     |     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     |            |
          |------+-------------+-------------+------------+------------|
          | 52MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size   |   W64    |   W65    |   W66   |  W67   |  W68   |
          |----------+----------+----------+---------+--------+--------|
          |   64KB   |  1 & 2   |  1 & 2   |  2 & 3  | 2 & 3  | 1 & 2  |
          |----------+----------+----------+---------+--------+--------|
          |  128KB   |  2 & 3   |  1 & 2   |  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.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |             Speed             |           SW1/1            |
          |-------------------------------+----------------------------|
          |             25MHz             |             On             |
          |-------------------------------+----------------------------|
          |             33MHz             |            Off             |
          |-------------------------------+----------------------------|
          |            50iMHz             |             On             |
          |-------------------------------+----------------------------|
          |            66iMHz             |            Off             |
          +------------------------------------------------------------+