
FORCOM TECHNOLOGY CORPORATION

B678/B679

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 214mm
I/O Options       None
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J10       Speaker                    J24

  Turbo LED                   J22       Reset switch               SW1

  Power LED & Keylock         J23       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select monochrome           JP1             Open

      Monitor type select color                JP1            Closed

     CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

     Bus speed select ATCLK/6                 JP3             Open

      Bus speed select ATCLK/8                 JP3            Closed

     Factory configured - do not alter       JP10           pins 1 & 2
                                                              closed

  Note:The location of JP3 is unidentified.

              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

      5MB         (4) 256K x 9    (4) 1M x 9

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

      16MB        (4) 4M x 9         NONE

      20MB        (4) 1M x 9      (4) 4M x 9

      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    (3) 16K x 4

     128KB      (4) 32K x 8        NONE       (3) 16K x 4

     256KB      (4) 32K x 8    (4) 32K x 8    (3) 16K x 4

                 CACHE JUMPER CONFIGURATION

   Size       JP5       JP6       JP7       JP8       JP9

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

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

  256KB      2 & 3     2 & 3     2 & 3     Closed    1 & 2

  Note: Pins designated should be in the closed position.

