TMC RESEARCH CORPORATION

PAT38PX (VER. 4.0)

Processor         80386DX
Processor Speed   25/33/40MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             32/64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose              Location      Purpose                  Location

  External battery        J10        Reset switch           J23 pins 9 &
                                                                 19

  Speaker             J23 pins 1 -   IDE LED in             J23 pins 10 &
                           4                                     20

  Power LED &        J23 pins 11 -   IDE LED out                JP12
  keylock                 15

  Turbo switch        J23 pins 7 &   32-bit external             S1
                          17         memory card

  Turbo LED           J23 pins 8 &
                          18

  Note: Board may be supplied with a surface mounted 80386DX.

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper          Position

  »   Monitor type select color                 JP1            Closed

      Monitor type select monochrome            JP1             Open

  »   CMOS memory normal operation              JP2          pins 1 & 2
      (internal battery)                                       closed

      CMOS memory normal operation              JP2             Open
      (external battery at J10)

      CMOS memory clear                         JP2          pins 2 & 3
                                                               closed

  »   Bus speed select iOSC/6                   JP3             Open

      Bus speed select iOSC/8                   JP3            Closed

  »   NPU mode select synchronous with          JP4          pins 2 & 3
      CPU                                                      closed

      NPU mode select synchronous with          JP4          pins 1 & 2
      OSC2/2                                                   closed

                            DRAM CONFIGURATION

    Size        Bank 0        Bank 1          Bank 2           Bank 3

    1MB       (4) 256K x       NONE            NONE             NONE
                  9

    2MB       (4) 256K x     (4) 256K x        NONE             NONE
                  9              9

  3MB (A)     (4) 256K x     (4) 256K x    (4) 256K x 9         NONE
                  9              9

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

    4MB       (4) 1M x 9       NONE            NONE             NONE

    5MB       (4) 256K x    (4) 1M x 9         NONE             NONE
                  9

  6MB (A)     (4) 1M x 9     (4) 256K x    (4) 256K x 9         NONE
                                 9

  6MB (B)     (4) 256K x     (4) 256K x    (36) 411000          NONE
                  9              9

    8MB       (4) 1M x 9    (4) 1M x 9         NONE             NONE

  10MB (A)    (4) 1M x 9    (4) 1M x 9     (4) 256K x 9     (4) 256K x 9

  12MB (A)    (4) 1M x 9    (4) 1M x 9      (4) 1M x 9          NONE

  12MB (B)    (4) 1M x 9    (4) 1M x 9     (36) 411000          NONE

    16MB      (4) 4M x 9       NONE            NONE             NONE

  16MB (A)    (4) 1M x 9    (4) 1M x 9      (4) 1M x 9       (4) 1M x 9

    20MB      (4) 4M x 9    (4) 1M x 9         NONE             NONE

  24MB (B)    (4) 4M x 9       NONE        (36) 411000      (36) 411000

    32MB      (4) 4M x 9    (4) 4M x 9         NONE             NONE

  64MB (A)    (4) 4M x 9    (4) 4M x 9      (4) 4M x 9       (4) 4M x 9

  Notes: Banks 2 & 3 in settings (A) are used when proprietary external
  memory card SIM64P is installed; banks 2 & 3 in settings (B) are used
  when card DIP8P is installed.

                            CACHE CONFIGURATION

     Size         Bank 0        Bank 1      TAG (U32)       TAG (U42)

     32KB        (4) 8K x 8      NONE      (1) 8K x 8      (1) 4K x 1 or
                                                           (1) 16K x 1

     64KB        (4) 8K x 8   (4) 8K x 8   (1) 8K x 8      (1) 4K x 1 or
                                                           (1) 16K x 1

     128KB       (4) 32K x       NONE      (1) 8K x 8      (1) 16K x 1
                     8

     256KB       (4) 32K x     (4) 32K x   (2) 32K x 8     (1) 16K x 1
                     8            8

  Notes: If DRAM is £ 8MB, all cache sizes may be installed; if DRAM is >
  8MB and £ 16MB,

  64, 128 or 256KB cache must be installed; if DRAM is > 16MB and £ 32MB,

  128 or 256KB cache must be installed; if DRAM is > 32MB, 256KB cache
  must be installed.

                    CACHE JUMPER/RESISTOR CONFIGURATION

  Size     JP9        RA12          RA13          RA14           RA15

  32KB      1 &    Installed         Not           Not            Not
            2                     installed     installed     installed

  64KB      1 &        Not        Installed        Not            Not
            2      installed                    installed     installed

  128KB     1 &        Not           Not        Installed         Not
            2      installed      installed                   installed

  256KB     2 &        Not           Not           Not        Installed
            3      installed      installed     installed

  Note: Pins designated should be in the closed position.