FOREX COMPUTER CORPORATION

80386SX-25/33

Processor         80386SX
Processor Speed   25/33MHz
Chip Set          Forex
Max. Onboard DRAM 16MB
Cache             16/64KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            JP2      Power LED & keylock         JP9

  Turbo LED                   JP7      Speaker                    JP10

  Reset switch                JP8      Turbo switch               JP11

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome           JP3            Closed

      Monitor type select color                JP3             Open

  »   Factory configured - do not alter       JP12            Closed

  »   CMOS memory normal operation            JP13             Open

      CMOS memory clear                       JP13            Closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

     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

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

     8MB        (2) 4M x 9        NONE           NONE           NONE

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

     10MB       (2) 1M x 9     (2) 4M x 9        NONE           NONE

     12MB       (2) 1M x 9     (2) 1M x 9     (2) 4M x 9        NONE

     16MB       (2) 4M x 9     (2) 4M x 9        NONE           NONE

                    CACHE CONFIGURATION

     Size          Bank 0       TAG (U15)      TAG (U16)

     16KB        (2) 8K x 8        NONE       (1) 8K x 8

     64KB       (2) 32K x 8     (1) 8K x 8    (1) 8K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 JP6A                 JP6B

        16KB           pins 1 & 2 closed   pins 1 & 2 closed

        64KB           pins 2 & 3 closed   pins 2 & 3 closed