MICRONICS COMPUTERS, INC.
=========================

   NON-ZIF SOCKET SYSTEM BOARD

   Processor    80486SX/80486DX/80486DX2/Pentium Overdrive        
   Processor    25/33/50(internal)/66(internal)MHz                
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 64MB                                              
   DRAM         
   Cache        64/128/256KB (on external cache card)             
   BIOS         AMI                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  External cache card, 32-bit VESA local bus slots  
                (2), floppy drive interface, IDE interface (2),   
                parallel port, serial ports (2)                   
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/M-O/32128-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Serial port 1    |   J11    | IDE interface     |   J30    |
   |                  |          | (secondary)       |          |
   |------------------+----------+-------------------+----------|
   | Parallel port    |   J12    | 32-bit VESA Local |  SL1 &   |
   |                  |          | bus slots         |   SL2    |
   |------------------+----------+-------------------+----------|
   | Serial port 2    |   J14    | External cache    |   SL3    |
   |                  |          | card slot         |          |
   |------------------+----------+-------------------+----------|
   | Floppy drive     |   J15    | Reset switch      |   W15    |
   | interface        |          |                   |          |
   |------------------+----------+-------------------+----------|
   | IDE interface    |   J16    | Turbo LED         |   W17    |
   | (primary)        |          |                   |          |
   |------------------+----------+-------------------+----------|
   | External battery |   J24    | Turbo switch      |   W18    |
   |------------------+----------+-------------------+----------|
   | Speaker          |   J28    | IDE interface LED |   W19    |
   |------------------+----------+-------------------+----------|
   | Power LED &      |   J29    |                   |          |
   | keylock          |          |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CPU type select 80486DX/DX2      |  W13   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU type select 80486SX          |  W13   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Parallel port mode select output |  W16   | pins 2 & 3 |
   |   | (printer)                        |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Parallel port mode select input  |  W16   | pins 1 & 2 |
   |   | (scanner)                        |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Flash BIOS write protect enabled |  W20   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Flash BIOS write protect         |  W20   | pins 1 & 2 |
   |   | disabled                         |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 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    |
   |------+-------------+-------------+------------+------------|
   | 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     |            |
   |------+-------------+-------------+------------+------------|
   | 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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |   Size    |   SW8/1    |   SW8/2   |   SW8/3   |   SW8/4   |
   |-----------+------------+-----------+-----------+-----------|
   |    4MB    |     On     |    On     |    On     |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |    8MB    |    Off     |    On     |    On     |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |   12MB    |     On     |    Off    |    On     |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |   16MB    |    Off     |    Off    |    On     |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |   16MB    |     On     |    On     |    Off    |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |   20MB    |     On     |    On     |    Off    |    Off    |
   |-----------+------------+-----------+-----------+-----------|
   |   24MB    |     On     |    Off    |    On     |    Off    |
   |-----------+------------+-----------+-----------+-----------|
   |   28MB    |    Off     |    On     |    On     |    Off    |
   |-----------+------------+-----------+-----------+-----------|
   |   32MB    |    Off     |    On     |    Off    |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |   36MB    |     On     |    Off    |    Off    |    Off    |
   |-----------+------------+-----------+-----------+-----------|
   |   40MB    |    Off     |    Off    |    On     |    Off    |
   |-----------+------------+-----------+-----------+-----------|
   |   48MB    |     On     |    Off    |    Off    |    On     |
   |-----------+------------+-----------+-----------+-----------|
   |   52MB    |    Off     |    Off    |    Off    |    Off    |
   |-----------+------------+-----------+-----------+-----------|
   |   64MB    |    Off     |    Off    |    Off    |    On     |
   |------------------------------------------------------------|
   | Note:This table corresponds exactly to the above DRAM      |
   | configuration table.                                       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Speed    |   SW8/5   |   SW8/6   |   SW8/7   |   SW8/8   |
   |------------+-----------+-----------+-----------+-----------|
   |   25MHz    |    On     |    Off    |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |   33MHz    |    Off    |    On     |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |   50iMHz   |    On     |    Off    |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |   66iMHz   |    Off    |    On     |    Off    |    Off    |
   +------------------------------------------------------------+