MONOLITHIC SYSTEMS, INC. (COLORADO MSI)

SBC486PE PEISA SINGLE BOARD

Processor        80486SX/80386DX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         Intel
Max. Onboard     128MB
DRAM
Cache            128/256KB (on 32-bit external cache module)
BIOS             AMI
Dimensions       339mm x 127mm
I/O Options      32-bit external cache module slot, PS/2 mouse port, PS/2
                 keyboard connector
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                Location

  IDE interface LED           J1        Power LED & keylock       J7

  Reset switch                J2        Auxiliary keyboard        J8

  Power LED                   J3        PS/2 keyboard             J9

  External battery            J4        PS/2 mouse                J11

  Front panel switches        J5        32-bit external           S1
  & LEDs                                cache module

  Speaker                     J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation             J10             Open

      CMOS memory clear                        J10            Closed

  »   Monitor type select color                J12            Closed

      Monitor type select monochrome           J12             Open

  »   Watchdog timer disabled                  J13           pins 2 & 3
                                                              closed

      Watchdog timer enabled                   J13           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        J14            Closed

  »   Factory configured - do not alter        J14            Closed

  »   DMA signal select active high            J16           pins 1 & 2
                                                              closed

      DMA signal select active low             J16           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     1MB         (1) 256K x       NONE           NONE           NONE
                     36

     2MB         (1) 512K x       NONE           NONE           NONE
                     36

     4MB         (1) 256K x     (1) 256K x     (1) 256K x   (1) 256K x 36
                     36            36             36

     4MB         (1) 512K x     (1) 512K x       NONE           NONE
                     36            36

     6MB         (1) 512K x     (1) 512K x     (1) 512K x       NONE
                     36            36             36

     8MB        (1) 1M x 36    (1) 1M x 36       NONE           NONE

     8MB        (1) 2M x 36       NONE           NONE           NONE

     12MB       (1) 1M x 36    (1) 1M x 36    (1) 1M x 36       NONE

     16MB       (1) 2M x 36    (1) 2M x 36       NONE           NONE

     16MB       (1) 4M x 36       NONE           NONE           NONE

     32MB       (1) 2M x 36    (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     32MB       (1) 4M x 36    (1) 4M x 36       NONE           NONE

     32MB       (1) 8M x 36       NONE           NONE           NONE

     48MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36       NONE

     64MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     64MB       (1) 8M x 36    (1) 8M x 36       NONE           NONE

     96MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36       NONE

    128MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

  Note:These are only some of the possible configurations. All modules
  must be of like capacity.