GIGA-BYTE TECHNOLOGY CO., LTD.
==============================

   GA-486VP

  Processor  80486SX/80487SX/CX486S/CX486S2/80486DX/80486DX2/Pentium 
             Overdrive                                               
  Processor  25/33/40/50(internal)/50/66(internal)MHz                
  Speed      
  Chip Set   UMC                                                     
  Max.       64MB                                                    
  Onboard    
  DRAM       
  Cache      64/128/256KB                                            
  BIOS       AMI                                                     
  Dimensions 230mm x 218mm                                           
  I/O        32-bit VESA local bus slots (3)                         
  Options    
  NPU        None                                                    
  Options    

<gopher://bitreich.org/I/th99/m/E-H/31810-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | External battery |    J2    | Power LED &       |    J9    |
   |                  |          | keylock           |          |
   |------------------+----------+-------------------+----------|
   | Turbo LED        |    J5    | 32-bit VESA Local |    S1    |
   |                  |          | bus slot          |          |
   |------------------+----------+-------------------+----------|
   | Reset switch     |    J6    | 32-bit VESA Local |    S2    |
   |                  |          | bus slot          |          |
   |------------------+----------+-------------------+----------|
   | Turbo switch     |    J7    | 32-bit VESA Local |    S3    |
   |                  |          | bus slot          |          |
   |------------------+----------+-------------------+----------|
   | Speaker          |    J8    |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | CMOS memory normal operation   |   J3   |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CMOS memory clear              |   J3   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |>> | Monitor type select CGA        |  J11   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select all others |  J11   |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 1MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 3MB  | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (1) 4M x 36 |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 5MB  | (1) 1M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 6MB  | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 9MB  | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 10MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 12MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 16MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 16MB |  (1) 16M x  |    NONE     |    NONE    |    NONE    |
   |      |     36      |             |            |            |
   |------+-------------+-------------+------------+------------|
   | 20MB | (1) 4M x 36 |  (1) 16M x  |    NONE    |    NONE    |
   |      |             |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 24MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 32MB |  (1) 16M x  |  (1) 16M x  |    NONE    |    NONE    |
   |      |     36      |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (1) 4M x 36 |  (1) 16M x  | (1) 16M x  |    NONE    |
   |      |             |     36      |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x  | (1) 16M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 48MB |  (1) 16M x  |  (1) 16M x  | (1) 16M x  |    NONE    |
   |      |     36      |     36      |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 64MB |  (1) 16M x  |  (1) 16M x  | (1) 16M x  | (1) 16M x  |
   |      |     36      |     36      |     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  |     W0     |   W1   |   W2   |    W3    |    W4    |
   |-------+------------+--------+--------+----------+----------|
   | 64KB  | pins 1 & 2 |  Open  |  Open  | pins 1 & | pins 1 & |
   |       |            |        |        |    2     |    2     |
   |-------+------------+--------+--------+----------+----------|
   | 128KB | pins 1 & 2 | Closed |  Open  | pins 2 & | pins 2 & |
   |       |            |        |        |    3     |    3     |
   |-------+------------+--------+--------+----------+----------|
   | 256KB | pins 2 & 3 | Closed | Closed | pins 1 & | pins 2 & |
   |       |            |        |        |    2     |    3     |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |        Type        |       JP3        |         W6         |
   |--------------------+------------------+--------------------|
   |      80486SX       |       Open       | pins 2 & 3 closed  |
   |--------------------+------------------+--------------------|
   |       CX486S       |       Open       | pins 2 & 3 closed  |
   |--------------------+------------------+--------------------|
   |      CX486S2       |      Closed      | pins 2 & 3 closed  |
   |--------------------+------------------+--------------------|
   |      80487SX       |       Open       | pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |      80486DX       |       Open       | pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |      80486DX2      |       Open       | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | Speed  |    JP2    |  JP6   |    W7    |    W8    |   W9   |
   |--------+-----------+--------+----------+----------+--------|
   | 25MHz  | pins 1 &  |  Open  | pins 1 & | pins 2 & | pins 2 |
   |        |     2     |        |    2     |    3     |  & 3   |
   |--------+-----------+--------+----------+----------+--------|
   | 33MHz  | pins 1 &  |  Open  | pins 1 & | pins 1 & | pins 1 |
   |        |     2     |        |    2     |    2     |  & 2   |
   |--------+-----------+--------+----------+----------+--------|
   | 40MHz  | pins 2 &  | Closed | pins 1 & | pins 1 & | pins 2 |
   |        |     3     |        |    2     |    2     |  & 3   |
   |--------+-----------+--------+----------+----------+--------|
   | 50iMHz | pins 1 &  |  Open  | pins 1 & | pins 2 & | pins 2 |
   |        |     2     |        |    2     |    3     |  & 3   |
   |--------+-----------+--------+----------+----------+--------|
   | 50MHz  | pins 2 &  | Closed | pins 2 & | pins 2 & | pins 1 |
   |        |     3     |        |    3     |    3     |  & 2   |
   |--------+-----------+--------+----------+----------+--------|
   | 66iMHz | pins 1 &  |  Open  | pins 1 & | pins 1 & | pins 1 |
   |        |     2     |        |    2     |    2     |  & 2   |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+