
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

