NOVACOR, INC.

OPTIMUM 386SX-16/20/25 REV. A

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

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J1       Turbo LED                  JP7

  Speaker                     J21       Reset switch               S1

  Power LED & keylock         J22       Turbo switch               S3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation             JP1           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP1           pins 1 & 2
                                                              closed

  »   Monitor type select color (AMI           JP2            Closed
      BIOS)

      Monitor type select monochrome           JP2             Open
      (AMI BIOS)

  »   Password enabled (MR BIOS)               JP2            Closed

      Password disabled (MR BIOS)              JP2             Open

                            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          TAG

     16KB        (2) 8K x 8    (2) 4K x 4

     64KB        (2) 32K x 8   (2) 4K x 4

                         SRAM JUMPER CONFIGURATION

    Size           JP3            JP4             JP5            JP6

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

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