
TMC RESEARCH CORPORATION

CAT48AF, CAP48AF

Processor  804846SX/SL80486SX/SL80486SX2/80486DX/SL80486DX/

           TI486DX2/AM486/AM486+/80486DX2/SL80486DX2/TI486DX4/

           80486DX4/P24D/P24T/CX5X86
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)/120(internal)MHz
Chip Set   ALI
Video Chip None
Set
Maximum    128MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      128/256/512KB
BIOS       Unidentified
Dimensions Unidentified
I/O        Floppy drive interface, IDE interfaces (2), parallel port, PS/2
Options    mouse interface, serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  IDE interface 1           J1         Turbo switch          JP1 pins 7 &
                                                                 17

  IDE interface 2           J2         Turbo LED             JP1 pins 8 &
                                                                 18

  Floppy drive              J3         Reset switch          JP1 pins 9 &
  interface                                                      19

  Parallel port             J4         IDE interface LED    JP1 pins 10 &
                                                                 20

  Serial port 1             J5         Power LED &          JP1 pins 11 -
                                       keylock                   15

  Serial port 2             J6         PS/2 mouse               JP27
                                       interface

  Speaker               JP1 pins 1 -   Auxiliary keyboard        KB1
                             4         connector

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP19          Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP19          Pins 2 & 3
                                                              closed

     System reset when watch dog timer       JP20          Pins 1 & 2
      times out                                               closed

      Activate NMI to CPU when watch          JP20          Pins 2 & 3
      dog timer times out                                     closed

      Watch dog timer disabled                JP20             Open

     Watch dog timer time out select 1       JP22             Open
      second

      Watch dog timer time out select         JP22            Closed
      500ms

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     2MB         (1) 256K x     (1) 256K x       None           None
                     36            36

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

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

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

     4MB         (1) 512K x       None         (1) 256K x   (1) 256K x 36
                     36                           36

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

     5MB         (1) 256K x    (1) 1M x 36       None           None
                     36

     6MB         (1) 256K x     (1) 256K x    (1) 1M x 36       None
                     36            36

     6MB         (1) 512K x       None        (1) 1M x 36       None
                     36

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

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

     10MB        (1) 256K x     (1) 256K x    (1) 1M x 36    (1) 1M x 36
                     36            36

     10MB        (1) 512K x       None        (1) 1M x 36    (1) 1M x 36
                     36

     10MB        (1) 512K x       None        (1) 2M x 36       None
                     36

     12MB       (1) 1M x 36       None        (1) 2M x 36       None

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

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

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

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

     17MB        (1) 256K x    (1) 4M x 36       None           None
                     36

     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) 16M x 36      None           None           None

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

     64MB       (1) 8M x 36       None        (1) 4M x 36    (1) 4M x 36

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

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

    128MB       (1) 32M x 36      None           None           None

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     128KB        (4) 32K x 8     (1) 8K x 8

     256KB        (4) 64K x 8    (1) 16K x 8

     512KB        (4) 128K x 8   (1) 32K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 JP13                 JP14

        128KB          Pins 2 & 3 closed   Pins 2 & 3 closed

        256KB          Pins 2 & 3 closed   Pins 1 & 2 closed

        512KB          Pins 1 & 2 closed   Pins 1 & 2 closed

                            CPU SPEED SELECTION

     Speed           JP15           JP16          JP17           JP18

     25MHz        Pins 1 & 2        Open          Open           Open
                    closed

     33MHz        Pins 1 & 2       Closed        Closed          Open
                    closed

     40MHz        Pins 1 & 2       Closed         Open           Open
                    closed

    50iMHz        Pins 1 & 2        Open          Open           Open
                    closed

     50MHz        Pins 2 & 3        Open         Closed         Closed
                    closed

    66iMHz        Pins 1 & 2       Closed        Closed          Open
                    closed

    75iMHz        Pins 1 & 2        Open          Open           Open
                    closed

    80iMHz        Pins 1 & 2       Closed         Open           Open
                    closed

    100iMHz       Pins 1 & 2       Closed        Closed          Open
                    closed

    120iMHz       Pins 1 & 2       Closed         Open           Open
                    closed

                           CPU VOLTAGE SELECTION

                Voltage                                JP2

                  3.45v                        Pins 1 & 2 closed

                    4v                          Pins 3 & 4 closed

                    5v                          Pins 5 & 6 closed

                           DMA CHANNEL SELECTION

         Channel                   JP21                     JP23

              1             Pins 1 & 2 closed        Pins 1 & 2 closed

             3             Pins 2 & 3 closed        Pins 2 & 3 closed

                        SERIAL PORT 2 SELECTION

        Setting                  JP25                    JP26

      Used as COM2         Pins 1 & 2 closed       Pins 1 & 2 closed

  Used as IR connector     Pins 2 & 3 closed       Pins 2 & 3 closed

                            CPU TYPE SELECTION

       Type          JP3      JP4       JP5      JP6      JP7       JP8

     80486SX        Open     1 & 2     Open     1 & 2    1 & 2     Open

    SL80486SX       3 & 4    3 & 4     3 & 4    1 & 2    1 & 2     Open

    SL80486SX2      3 & 4    3 & 4     3 & 4    1 & 2    1 & 2     Open

     80486DX        Open     1 & 2     Open     2 & 3    1 & 2     2 & 3

    SL80486DX       3 & 4    3 & 4     3 & 4    2 & 3    1 & 2     2 & 3

     CX486M7        5 & 6    5 & 6     5 & 6    2 & 3    1 & 2     2 & 3

     TI486DX2       5 & 6    5 & 6     5 & 6    2 & 3    1 & 2     2 & 3

   AM486-66/80      Open     1 & 2     Open     2 & 3    1 & 2     2 & 3

    AM486-100       Open     1 & 2     Open     2 & 3    1 & 2     2 & 3

   AM486+/66/80     3 & 4    3 & 4     3 & 4    2 & 3    2 & 3     2 & 3

  AM486+/100/120    3 & 4    3 & 4     3 & 4    2 & 3    2 & 3     2 & 3

     80486DX2       Open     1 & 2     Open     2 & 3    1 & 2     2 & 3

    SL80486DX2      3 & 4    3 & 4     3 & 4    2 & 3    1 & 2     2 & 3

     TI486DX4       5 & 6    5 & 6     5 & 6    2 & 3    1 & 2     2 & 3

     80486DX4       3 & 4    3 & 4     3 & 4    2 & 3    1 & 2     2 & 3

       P24D         3 & 4    3 & 4     3 & 4    2 & 3    2 & 3     2 & 3

       P24T         3 & 4    3 & 4     3 & 4    2 & 3    2 & 3     1 & 2

      CX5X86        3 & 4    3 & 4     3 & 4    2 & 3    1 & 2     2 & 3

      AM5X86        3 & 4    3 & 4     3 & 4    2 & 3    2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

       Type            JP9           JP10          JP11          JP12

     80486SX           Open          Open          Open         Closed

    SL80486SX         Closed         Open          Open         Closed

    SL80486SX2        Closed         Open          Open         Closed

     80486DX           Open          Open          Open         Closed

    SL80486DX         Closed         Open          Open         Closed

     CX486M7          Closed         Open          1 & 2         Open

     TI486DX2         Closed         Open          1 & 2         Open

   AM486-66/80         Open         Closed         Open         Closed

    AM486-100          Open          Open          Open         Closed

   AM486+/66/80       Closed         Open         1 & 3, 5      Closed
                                                    & 6

  AM486+/100/120      Closed         Open          5 & 6        Closed

     80486DX2          Open          Open          Open         Closed

    SL80486DX2        Closed         Open          Open         Closed

     TI486DX4         Closed         Open          1 & 2         Open

     80486DX4         Closed         Open          Open         Closed

       P24D           Closed         Open          5 & 6        Closed

       P24T           Closed         Open          Open         Closed

      CX5X86          Closed         Open          5 & 6        Closed

      AM5X86          Closed         Open         1 & 3, 5      Closed
                                                    & 6

  Note: Pins designated should be in the closed position.

