
GVC TECHNOLOGIES, INC.

486-33/50

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33/50MHz
Chip Set          SIS
Max. Onboard DRAM 64MB
Cache             32/64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J1       Power LED & keylock         J18

  Reset switch                J15      Speaker                     J19

  Turbo switch                J17      Turbo LED                   J20

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        J21              N/A

     Monitor type select color                J2             Closed

      Monitor type select monochrome           J2              Open

                            DRAM CONFIGURATION

     Size         Bank 0          Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9       NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9       NONE           NONE

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

     5MB        (4) 256K x 9   (4) 1 M x 9        NONE           NONE

     6MB        (4) 256K x 9   (4) 256K x 9    (4) 1M x 9        NONE

     8MB        (4) 1M x 9      (4) 1M x 9        NONE           NONE

     9MB        (4) 256K x 9    (4) 1M x 9     (4) 1M x 9        NONE

     10MB       (4) 256K x 9   (4) 256K x 9    (4) 1M x 9     (4) 1M x 9

     12MB       (4) 1M x 9      (4) 1M x 9     (4) 1M x 9        NONE

     16MB       (4) 1M x 9      (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

     16MB       (4) 4M x 9         NONE           NONE           NONE

     20MB       (4) 1M x 9      (4) 4M x 9        NONE           NONE

     24MB       (4) 1M x 9      (4) 1M x 9     (4) 4M x 9        NONE

     32MB       (4) 4M x 9      (4) 4M x 9        NONE           NONE

     48MB       (4) 4M x 9      (4) 4M x 9     (4) 4M x 9        NONE

     64MB       (4) 4M x 9      (4) 4M x 9     (4) 4M x 9     (4) 4M x 9

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     32KB        (4) 8K x 8        NONE       (2) 16K x 4

     64KB        (4) 8K x 8     (4) 8K x 8    (2) 16K x 4

     128KB      (4) 32K x 8        NONE       (2) 16K x 4

     256KB      (4) 32K x 8    (4) 32K x 8    (2) 16K x 4

                        CACHE JUMPER CONFIGURATION

   Size     J3     J4     J5     J6     J7     J8     J9     J10     J11

   32KB     1 &    1 &    1 &    1 &    1 &    1 &    1 &   1 & 2   1 & 2
             2      2      2      2     2      2      2

   64KB     2 &    1 &    2 &    2 &    1 &    1 &    2 &   1 & 2   1 & 2
             3      2      3      3     2      2      3

  128KB     2 &    2 &    1 &    2 &    2 &    1 &    1 &   1 & 2   2 & 3
             3      3      2      3     3      2      2

  256KB     2 &    2 &    2 &    2 &    2 &    2 &    2 &   2 & 3   2 & 3
             3      3      3      3     3      3      3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type               J12                J13               J14

      80486SX          pins 2 & 3         pins 2 & 3           Open
                         closed            closed

      80487SX          pins 1 & 2         pins 2 & 3          Closed
                         closed            closed

      80486DX          pins 1 & 2         pins 1 & 2          Closed
                         closed            closed

