
FORCOM TECHNOLOGY CORPORATION

B637/B638/B639


Processor         80386SX
Processor Speed   16/20/25MHz
Chip Set          Headland
Max. Onboard DRAM 8MB
Cache             None
BIOS              AMI/Quadtel
Dimensions        246.6mm x 216.8mm
I/O Options       None
NPU Options       80387SX


[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo LED                   P1       Reset switch                P5

  Speaker                     P2       External battery            P6

  Power LED & Keylock         P3       Turbo switch                W2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select monochrome          JP103            Open

      Monitor type select color               JP103           Closed

     Power good signal detect from            P7            pins 1 & 2
      board                                                   closed

      Power good signal detect from            P7            pins 2 & 3
      power supply                                            closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     512KB      (2) 256K x 9      NONE           NONE           NONE

      1MB       (2) 256K x 9   (2) 256K x 9      NONE           NONE

     1.5MB      (2) 256K x 9   (2) 256K x 9   (2) 256K x 9      NONE

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

      2MB        (2) 1M x 9       NONE           NONE           NONE

      3MB       (2) 256K x 9   (2) 256K x 9   (2) 1M x 9        NONE

      4MB        (2) 1M x 9    (2) 1M x 9        NONE           NONE

     4.5MB       (2) 1M x 9    (2) 1M x 9     (2) 256K x 9      NONE

      5MB        (2) 1M x 9    (2) 1M x 9     (2) 256K x 9  (2) 256K x 9

      6MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9        NONE

      8MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

