TMC RESEARCH CORPORATION

PAT3XAL (VER. 2.0)

Processor         80386SX/CX486SLC
Processor Speed   20/25/33/40MHz
Chip Set          VLSI
Max. Onboard DRAM 16MB
Cache             None
BIOS              Unidentified
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  External battery          J4         Turbo LED             J8 (pins 1 -
                                                                 2)

  Reset switch              J6         Turbo switch          J8 (pins 4 -
                                                                 5)

  Speaker                   J7         Power LED &               J9
                                       keylock

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   NPU synchronous with CPU                 JP2             Open

      NPU asynchronous with CPU                JP2            Closed

  »   Monitor type select monochrome           JP4             Open

      Monitor type select color                JP4            Closed

  »   Battery type select internal             JP7           pins 1 & 2
                                                              closed

      Battery type select external             JP7             Open

      CMOS memory clear                        JP7           pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

     512KB        (2) 256K x 9       NONE

      1MB         (2) 256K x 9   (2) 256K x 9

      2MB         (2) 1M x 9         NONE

      4MB         (2) 1M x 9      (2) 1M x 9

      8MB         (2) 4M x 9         NONE

      16MB        (2) 4M x 9      (2) 4M x 9

                   CPU SPEED CONFIGURATION

        Speed                JP1                  JP5

        20MHz          pins 2 & 3 closed   pins 1 & 2 closed

        25MHz          pins 1 & 2 closed   pins 2 & 3 closed

        33MHz          pins 2 & 3 closed   pins 2 & 3 closed

        40MHz          pins 1 & 2 closed   pins 1 & 2 closed