UNIDENTIFIED

386DX CACHE

Processor         80386DX/CX486DLC
Processor Speed   25/33/40MHz
Chip Set          OPTI
Max. onboard DRAM 32MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        240mm x 220mm
I/O Options       None
NPU Options       80387DX/CX487DLC

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J1       Turbo LED                 JP12

  Power LED & keylock         J18       Turbo switch              JP11

  Speaker                     J19       Reset switch               SW1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   ISA bus clock iOSC/4 (10MHz)             JP2            Closed

      ISA bus clock iOSC/5 (8MHz)              JP2             Open

  »   CMOS memory normal operation             JP3           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP3           pins 1 & 2
                                                              closed

  »   Monitor type select color                JP4            Closed

      Monitor type select monochrome           JP4             Open

  »   ATCLK iOSC/2                             JP7           pins 1 & 2
                                                              closed

      ATCLK iOSC/1                             JP7           pins 2 & 3
                                                              closed

                    CACHE CONFIGURATION

     Size          Cache         Location         TAG

     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 JUMPER CONFIGURATION

  Size       JP6        JP8        JP9       JP10      JP17       JP18

  64KB       Open       Open       Open     pins 2     Open       Open
                                             & 3

  128KB     Closed     Closed      Open     pins 1     Open      Closed
                                             & 2

  256KB     Closed     Closed     Closed    pins 2    Closed     Closed
                                             & 3

  Note:Pins designated should be in the closed position.

              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

      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

            CPU TYPE CONFIGURATION

    CPU         JP1         JP5        JP13

  80386DX      Open        Open        Open

  CX486DLC     Open       Closed      Closed