
TMC RESEARCH CORPORATION

PAT48PG (VER. 2.0)/PAT48PG4 (VER. 1.0C)

Processor  80486SX/SL80486SX/CX486DX/80486DX/SL80486DX/80486DX2/
           SL80486DX2/80486DX4/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/83(internal)
Speed      100(internal)MHz
Chip Set   OPTI
Max.       128MB
Onboard
DRAM
Cache      128/256KB
BIOS       Unidentified
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  External battery          J3         Reset switch          J7 pins 9 &
                                                                 19

  Green PC LED              J5         IDE interface LED     J7 pins 10 &
                                                                 20

  IDE interface LED         J6         Power LED &           J7 pins 11 -
                                       keylock                   15

  Speaker              J7 pins 1 - 4   Green PC connector        J8

  Turbo switch          J7 pins 7 &    32-bit VESA local      SL1 - SL3
                            17         bus slots

  Turbo LED             J7 pins 8 &
                            18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

     CMOS memory normal operation            JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                       JP2           pins 1 & 2
                                                              closed

      Battery type select external            JP2              Open

     Factory configured - do not             JP10             N/A
      alter

     Factory configured - do not             JP11             N/A
      alter

     Factory configured - do not              W1              N/A
      alter

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

     16MB        (1) 1M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

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

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

     20MB        (1) 1M x 36   (1) 4M x 36        NONE           NONE

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

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

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

     64MB        (1) 16M x 36      NONE           NONE           NONE

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

     128MB       (1) 16M x 36  (1) 16M x 36       NONE           NONE

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

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

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

                  CACHE JUMPER CONFIGURATION

        Size                 JP6                  JP7

        128KB          pins 1 & 2 closed   pins 1 & 2 closed

        256KB          pins 2 & 3 closed   pins 2 & 3 closed

                   CACHE TYPE CONFIGURATION

        Type                 JP15                 JP16

     Write back             Closed         pins 2 & 3 closed

    Write through            Open                 Open

                          CPU TYPE CONFIGURATION

   Type         RNA1         RNA2          RNA3         RNA4        W8

  80486SX        Not          Not       Installed        Not       Closed
             installed     installed                 installed

  CX486DX        Not          Not           Not      Installed     Closed
             installed     installed    installed

  80486DX    Installed        Not           Not          Not       Closed
                           installed    installed    installed

  80486DX2   Installed        Not           Not          Not       Closed
                           installed    installed    installed

  80486DX4   Installed        Not           Not          Not       Open
                           installed    installed    installed

   P24T          Not       Installed        Not          Not       Closed
             installed                  installed    installed

  Note: The 80486DX4 is only available on the PAT48PG4.

                        CPU TYPE CONFIGURATION

       Type             RNB1              RNB2              RNB3

   Cyrix series     Not installed     Not installed      Installed

   80486 series       Installed       Not installed    Not installed

  SL80486 series    Not installed       Installed      Not installed

                          CPU SPEED CONFIGURATION

     Speed          JP5          JP12           JP13            JP14

     25MHz       1 & 2, 5 &      1 & 2          Open            Open
                     6

     33MHz       1 & 2, 3 &      1 & 2          Open            Open
                     4

     40MHz       3 & 4, 5 &      2 & 3          Open           Closed
                  6, 7 & 8

     50iMHz      1 & 2, 5 &      1 & 2          Open            Open
                     6

     50MHz       1 & 2, 5 &      2 & 3         Closed          Closed
                  6, 7 & 8

     66iMHz      1 & 2, 3 &      1 & 2          Open            Open
                     4

     75iMHz      1 & 2, 5 &      1 & 2          Open            Open
                     6

     80iMHz      3 & 4, 5 &      2 & 3          Open           Closed
                  6, 7 & 8

     83iMHz      1 & 2, 3 &      1 & 2          Open            Open
                     4

    100iMHz      1 & 2, 3 &      1 & 2          Open            Open
                     4

  Note: Pins designated should be in the closed position.

