OMNITEL, INC.

386SX Rev. B

Processor         80386SX
Processor Speed   20/25MHz
Chip Set          OPTI
Max. Onboard DRAM 16MB
Cache             16/32/64KB
BIOS              MR
Dimensions        330.2mm x 218.4mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            JP1      Turbo switch               JP15

  Turbo LED                  JP13      Speaker                    JP16

  Reset switch               JP14      Power LED & keylock        JP17

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Battery select internal                 JP10           pins 2 & 3
                                                              closed

      Battery select external                 JP10           pins 1 & 2
                                                              closed

  »   Diagnostics disabled                    JP12             Open

      Diagnostics enabled                     JP12            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

     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 JUMPER CONFIGURATION

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

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

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

  Note:Pins designated should be in the closed position.

                   CACHE CONFIGURATION

       Size              Bank 0             Bank 1

       16KB            (2) 8K x 8            NONE

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

       64KB           (2) 32K x 8            NONE

  Note:TAG is factory installed and cannot be altered.