
TMC RESEARCH CORPORATION

MAT48PX (EISA)

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33/50MHz
Chip Set          OPTI
Max. Onboard DRAM 256MB
Cache             64/128/256/512KB
BIOS              AMI
Dimensions        350mm x 304mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose              Location      Purpose                 Location

  IDE LED out             J4         Reset switch         J5 pins 9 & 19

  Speaker            J5 pins 1 - 4   IDE LED in           J5 pins 10 & 20

  Turbo switch        J5 pins 7 &    Power LED &          J5 pins 11 - 15
                          17         keylock

  Turbo LED           J5 pins 8 &
                          18

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Monitor type select color                JP5            Closed

      Monitor type select monochrome           JP5             Open

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2         Bank 3

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

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

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

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

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

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

     24MB        (4) 1M x 9     (4) 1M x 9    (4) 4M x 9        NONE

     28MB        (4) 1M x 9     (4) 1M x 9    (4) 4M x 9     (4) 1M x 9

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

     36MB        (4) 4M x 9     (4) 4M x 9    (4) 1M x 9        NONE

     40MB        (4) 4M x 9     (4) 4M x 9    (4) 1M x 9     (4) 1M x 9

     48MB        (4) 4M x 9     (4) 4M x 9    (4) 4M x 9        NONE

     52MB        (4) 4M x 9     (4) 4M x 9    (4) 4M x 9     (4) 1M x 9

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

     64MB       (4) 16M x 9        NONE          NONE           NONE

     128MB      (4) 16M x 9    (4) 16M x 9       NONE           NONE

     192MB      (4) 16M x 9    (4) 16M x 9    (4) 16M x 9       NONE

     256MB      (4) 16M x 9    (4) 16M x 9    (4) 16M x 9    (4) 16M x 9

                            CACHE CONFIGURATION

    Size       Bank 0     Bank 1     TAG (U37)    TAG (U38)    TAG (U55)

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

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

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

   512KB      (4) 128K     NONE      (1) 32K x    (1) 64K x     (1) 64K x
                x 8                      8            1            1

  Notes: If DRAM is  32MB, all cache sizes may be installed; if DRAM is
  > 32MB and  64MB,

  128, 256, or 512KB cache must be installed; if DRAM is > 64MB and 
  128MB,

  256 or 512KB cache must be installed; if DRAM is > 128MB, 512KB cache
  must be installed.

                        CACHE JUMPER CONFIGURATION

   Size      RNA1 & RNA2     RNB1 & RNB2    RNC1 & RNC2      RND1 & RND2

   64KB       Installed     Not installed   Not installed   Not installed

   128KB    Not installed     Installed     Not installed   Not installed

   256KB    Not installed   Not installed    Installed      Not installed

   512KB    Not installed   Not installed   Not installed     Installed

                          CPU TYPE CONFIGURATION

        Type             JP1          JP2           JP3           JP4

   80486SX-16MHz      pins 2 & 3   pins 1 & 2    pins 1 & 2    pins 2 & 3
                       closed        closed       closed        closed

   80486SX-20MHz      pins 2 & 3   pins 1 & 2    pins 1 & 2    pins 2 & 3
                       closed        closed       closed        closed

   80486SX-25MHz      pins 1 & 2   pins 1 & 2    pins 1 & 2    pins 2 & 3
                                     closed       closed        closed

   80487SX-16MHz      pins 2 & 3   pins 1 & 2    pins 1 & 2    pins 2 & 3
                       closed        closed       closed        closed

   80487SX-20MHz      pins 2 & 3   pins 1 & 2    pins 1 & 2    pins 2 & 3
                       closed        closed       closed        closed

   80487SX-25MHz      pins 1 & 2   pins 1 & 2    pins 1 & 2    pins 2 & 3
                       closed        closed       closed        closed

   80486DX-25MHz      pins 1 & 2   pins 1 & 2    pins 1 & 2    pins 2 & 3
                       closed        closed       closed        closed

   80486DX-33MHz      pins 1 & 2   pins 1 & 2    pins 2 & 3    pins 2 & 3
                       closed        closed       closed        closed

   80486DX-50MHz      pins 1 & 2   pins 1 & 2    pins 2 & 3    pins 1 & 2
                       closed        closed       closed        closed

                       CPU TYPE CONFIGURATION

      Type             RNA3              RNB3             RNC3

  80486SX-16MHz    Not installed    Not installed      Installed

  80486SX-20MHz    Not installed    Not installed      Installed

  80486SX-25MHz    Not installed    Not installed      Installed

  80487SX-16MHz    Not installed    Not installed    Not installed

  80487SX-20MHz    Not installed      Installed      Not installed

  80487SX-25MHz    Not installed      Installed      Not installed

  80486DX-25MHz      Installed      Not installed    Not installed

  80486DX-33MHz      Installed      Not installed    Not installed

  80486DX-50MHz      Installed      Not installed    Not installed

