TMC RESEARCH CORPORATION

IAT48PX

Processor       80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 20/25/33/50 (Internal)/50/60 (Internal)MHz
Chip Set        OPTI
Max. onboard    32MB
DRAM
SRAM Cache      64/128/256KB
BIOS            AMI
Dimensions      330mm x 218mm
I/O Options     Floppy drive interface, floppy drive interface, parallel
                ports (2), serial ports (2)
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  Speaker                   J1A        Serial port (COM1)         J6
                                       DB-9

  Power LED & keylock       J1B        Parallel port DP-9         J7

  Not used                  J1C        10-pin header              J8
                                       serial port (COM2)

  Turbo switch              J1D        10-pin header              J9
                                       serial port (COM1)

  Turbo LED                 J1E        Parallel port             J10
                                       10-pin header

  Reset switch              J1F        No function               J17

  IDE interface LED       J1G, J2      Floppy drive              J18
                                       interface

  External battery          J4         IDE interface             J19

  Serial port (COM2)        J5         16-bit riser card          S1
  DB-9

  Note: Depending on the specifications, the IAT48PX will have either
  10-pin header serial ports or the DB-9 serial ports.

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation             JP1           pins 2 & 3
      (Internal Battery)                                      closed

      CMOS memory normal operation             JP1             Open
      (External Battery)

      CMOS memory clear                        JP1           pins 1 & 2
                                                              closed

  »   Monitor type select color                JP2            Closed

      Monitor type select monochrome           JP2             Open

  »   Floppy drive interface (J18)             JP3            Closed
      enabled

      Floppy drive interface (J18)             JP3             Open
      disabled

  »   IDE interface enabled                 JP4 & JP5         Closed

      IDE interface disabled                JP4 & JP5          Open

  »   I/O bus speed select ATCLK/4             JP6             Open

      I/O bus speed select ATCLK/6             JP6            Closed

  »   CPU clock select single frequency        JP7           pins 1 & 2
                                                              closed

      CPU speed select dual frequency          JP7           pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1          U45         U44 (TAG)

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

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

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

                   CACHE RN SOCKET CONFIGURATION

      Size             RND              RNE              RNF

      64KB          Installed      Not installed    Not installed

      128KB       Not installed      Installed      Not installed

      256KB       Not installed    Not installed      Installed

                         SERIAL PORT CONFIGURATION

            COM1                     COM2                    RNH

  »           COM1                   COM2           Installed on 1, 2, 3,
                                                            and 4

              COM1                 Disabled         Installed on 2, 3, 4,
                                                            and 5

            Disabled                 COM2           Installed on 3, 4, 5,
                                                            and 6

            Disabled               Disabled         Installed on 4, 5, 6,
                                                            and 7

                        PARALLEL PORT CONFIGURATION

            LPT                    Address                   RNG

  »             1                3BCh - 3BEh        Installed on 2, 3, 4,
                                                            and 5

                2                378h - 37Fh        Installed on 1, 2, 3,
                                                            and 4

            Disabled                 N/A            Installed on 4, 5, 6,
                                                            and 7

                      CPU TYPE CONFIGURATION

      Type             RNA              RNB              RNC

     80486SX      Not installed    Not installed      Installed

     80487SX      Not installed      Installed      Not installed

     80486DX        Installed      Not installed    Not installed

    ODP486SX      Not installed      Installed      Not installed

    80486DX2        Installed      Not installed    Not installed