TMC RESEARCH CORPORATION

PAT34PV

Processor             80386DX/CX486DLC/80486SX/80487SX/80486DX/ODP486SX

                      80486DX2/ODP586SX
Processor Speed       25/33/40/50(internal)/50/66(internal)MHz
Chip Set              OPTI
Max. Onboard DRAM     32MB
Cache                 64/128/256KB
BIOS                  AMI
Dimensions            235mm x 220mm
I/O Options           None
NPU Options           80387

[Image]

                                CONNECTIONS

  Funcation             Location      Purpose                 Location

  External battery         J1         Reset switch         J5/pins 9 & 19

  Speaker             J5/pins 1 - 4   IDE interface LED     J5/pins 10 &
                                                                 20

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

  Turbo LED            J5/pins 8 &    IDE interface LED          J6
                           18

                        USER CONFIGURABLE SETTINGS

                Function                     Location          Setting

  »   Monitor type select color                 JP1            closed

      Monitor type select monochrome            JP1             open

  »   CMOS memory normal (internal              JP2           pins 2 & 3
      battery)                                                 closed

      CMOS memory normal (external              JP2             open
      battery)

      CMOS memory clear                         JP2           pins 1 & 2
                                                               closed

  »   Factory configured - do not alter         JP3              N/A

  »   VESA bus speed select £ 33MHz             JP4             open

      VESA bus speed select > 33MHz             JP4            closed

  »   VESA bus wait states select 0             JP5             open
      (CPU £ 33MHz)

      VESA bus wait state select 1 (CPU         JP5            closed
      > 33MHz)

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

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

      16MB        (4) 4M x 9         NONE

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

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

                    CACHE CONFIGURATION

     Size          Cache         Location      TAG(U39)

     64KB        (8) 8K x 8    Banks 0 & 1    (1) 8K x 8

     128KB      (4) 32K x 8       Bank 0      (1) 8K x 8

     256KB      (8) 32K x 8    Banks 0 & 1    (1) 32K x 8

  CACHE RESISTOR NETWORK CONFIGURATION

   Size       RND       RNE       RNF

   64KB     closed     open       open

  128KB      open     closed      open

  256KB      open      open      closed

                          CPU CONFIGURATION

    CPU         RNA        RNB         RNC        RN386      RN486

  80486DX2    closed       open       open        open      closed

  ODP487SX     open       closed     closed       open      closed

  80486DX     closed       open       open        open      closed

  80487SX      open       closed      open        open      closed

  80486SX      open        open       open        open      closed

  CX486DLC      N/A        N/A         N/A       closed      open

  80386DX       N/A        N/A         N/A       closed      open

                 CPU SPEED RESISTOR NETWORK CONFIGURATION

       Speed          RNG1       RNG2       RNG3       RNG4        RNG5

  66(internal)MHz     N/A         N/A       open      closed       open

       50MHz          N/A         N/A       open       open       closed

  50(internal)MHz     N/A         N/A      closed      open        open

  50(internal)MHz     N/A         N/A      closed      open        open

     40MHz/486        N/A         N/A       open      closed       open

     40MHz/386        open      closed      open      closed       open

     33MHz/486        N/A         N/A       open      closed       open

     33MHz/386       closed      open       open      closed       open

       25MHz          N/A         N/A      closed      open        open

                       VESA LOCAL BUS CONFIGURATION

   VESA cards supported              RNV1                   RNV2

             2                       open                  closed

             1                      closed                  open

  Note:The manufacturer does not recommend using the two card setting
  with a 486DX/50MHz