
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. Onboard 64MB
DRAM
Cache        64/128/256KB
BIOS         AMI
Dimensions   230mm x 218mm
I/O Options  32-bit VESA local bus slots (3)
NPU Options  None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery            J2       Power LED & keylock         J9

  Turbo LED                   J5       32-bit VESA Local bus       S1
                                       slot

  Reset switch                J6       32-bit VESA Local bus       S2
                                       slot

  Turbo switch                J7       32-bit VESA Local bus       S3
                                       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 36       NONE

      4MB       (1) 1M x 36    (1) 1M x 36    (1) 1M x 36    (1) 1M x 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 36       NONE

      8MB       (1) 4M x 36    (1) 4M x 36       NONE           NONE

      9MB       (1) 1M x 36    (1) 4M x 36    (1) 4M x 36       NONE

     10MB       (1) 1M x 36    (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     12MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36       NONE

     16MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     16MB       (1) 16M x 36      NONE           NONE           NONE

     20MB       (1) 4M x 36    (1) 16M x 36      NONE           NONE

     24MB       (1) 4M x 36    (1) 4M x 36    (1) 16M x 36      NONE

     32MB       (1) 16M x 36   (1) 16M x 36      NONE           NONE

     36MB       (1) 4M x 36    (1) 16M x 36   (1) 16M x 36      NONE

     40MB       (1) 4M x 36    (1) 4M x 36    (1) 16M x 36  (1) 16M x 36

     48MB       (1) 16M x 36   (1) 16M x 36   (1) 16M x 36      NONE

     64MB       (1) 16M x 36   (1) 16M x 36   (1) 16M x 36  (1) 16M x 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 &      Open         Open       pins 1 &    pins 1 &
                  2                                     2           2

    128KB      pins 1 &     Closed        Open       pins 2 &    pins 2 &
                  2                                     3           3

    256KB      pins 2 &     Closed       Closed      pins 1 &    pins 2 &
                  3                                     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.

