INTERCOMP, INC.

386SX 20/25/33

Processor         80386SX
Processor Speed   20/25/33MHz
Chip Set          Intercomp
Max. Onboard DRAM 16MB
SRAM Cache        16/32/64KB
BIOS              MR
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  External battery             JP1      Turbo LED                 JP16

  Diagnostic LED              JP13      Speaker                   JP17

  Reset switch                JP14      Power LED & keylock       JP18

  Turbo switch                JP15

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Battery select internal                 JP10          pins 2 & 3
                                                              closed

      Battery select external                 JP10          pins 1 & 2
                                                              closed

  »   CMOS memory normal operation            JP11          pins 1 & 2
                                                              closed

      CMOS memory clear                       JP11          pins 2 & 3
                                                              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

    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

    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

    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 (U17 & U19)    Bank 1 (U16 & U18)

         16KB              (2) 8K x 8               NONE

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

         64KB              (2) 32K x 8              NONE

                     CACHE JUMPER CONFIGURATION

   Size      JP4      JP5       JP6       JP7      JP8       JP9

   16KB     1 & 2    1 & 2     1 & 2     1 & 2     Open      Open

   32KB     2 & 3    1 & 2     1 & 2     2 & 3    Closed     Open

   64KB     2 & 3    2 & 3     2 & 3     2 & 3     Open     Closed

  Note:Pins designated should be in the closed position.