EVERSOURCE COMPUTERS, INC.

OP496PI 486DX/SX

Processor         80486SX/80486DX
Processor Speed   25/33/40MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             None
BIOS              AMI
Dimensions        230mm x 220mm
I/O Options       None
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J4       Turbo switch               JP4

  Speaker                     J14       Turbo LED                  JP7

  Power LED & keylock         J17       Reset switch               JP8

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP2            Closed

      Monitor type select monochrome           JP2             Open

  »   CMOS memory normal operation             JP3           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP3           pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9   (4) 1 M x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      32MB        (4) 4M x 9      (4) 4M x 9

                          CPU TYPE CONFIGURATION

       Type               JP1               JP5                JP6

     80486SX             Open               Open            pins 2 & 3
                                                              closed

     80487SX           pins 2 & 3        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

     80486DX           pins 1 & 2        pins 1 & 2         pins 1 & 2
                        closed             closed             closed