
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

