
ABIT COMPUTER CORPORATION

FA3 MAINBOARD

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          Unidentified
Max. Onboard DRAM 32MB
Cache             64/128/256KB
BIOS              AMI/Award
Dimensions        254mm x 218mm
I/O Options       None
NPU Options       80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  External battery          J4         Turbo switch         J7 pins 1 & 2

  Reset switch              J5         Turbo LED            J7 pins 4 & 5

  Speaker                   J6         Power LED &               J8
                                       keylock

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        JP1           pins 1 & 2
                                                              closed

     Factory configured - do not alter        JP1           pins 2 & 3
                                                              closed

     Monitor type select monochrome           JP2           pins 2 & 3
                                                              closed

      Monitor type select CGA/EGA/VGA          JP8           pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      32MB        (4) 4M x 9      (4) 4M x 9

                    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                     JP5                       JP6

         64KB                     Open               pins 1 & 2 closed

         128KB              pins 1 & 2, 3 & 4        pins 2 & 3 closed
                                 closed

         256KB           pins 1 & 2, 3 & 4, 5 &      pins 1 & 2 closed
                                6 closed

