MULTI DIMENSION RESEARCH, INC.

CACHE FM-S486C

Processor         80486DX
Processor Speed   25/33/40/50MHz
Chip Set          Symphony
Max. Onboard DRAM 32MB
Cache             64/128/256/1024KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                     JP1       Turbo switch              JP10

  Reset switch                JP2       Turbo LED                 JP11

  Power LED & keylock         JP5

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   CPU speed select CCLK2 (CLOCK=OSC)       JP3           pins 1 & 2
                                                              closed

      CPU speed select PLCK (CLOCK=OSC2)       JP3           pins 2 & 3
                                                              closed

  »   Monitor type select color                JP6            Closed

      Monitor type select monochrome           JP6             Open

  »   Cache write hit select 0 wait            JP32           Closed
      state

      Cache write hit select 1 wait            JP32            Open
      state

  »   Factory configured - do not alter        JP33          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) 256K x 9   (4) 1 M x 9

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

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

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

                            CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG         Line size

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

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

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

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

      1MB        (4) 128K x     (4) 128K x     (1) 128K x         4
                     8              8              8

                   CACHE JUMPER CONFIGURATION

   Size       JP22       JP23       JP24       JP25       JP26

   64KB       1 & 2      1 & 2      1 & 2      1 & 2      Open

   128KB      2 & 3      1 & 2      1 & 2      1 & 2     Closed

   128KB      2 & 3      1 & 2      1 & 2      1 & 2     Closed

   256KB      2 & 3      2 & 3      1 & 2      1 & 2      Open

    1MB       2 & 3      2 & 3      2 & 3      2 & 3      Open

  Note: Pins designated should be in the closed position.

             CACHE JUMPER CONFIGURATION (CON’T)

   Size      JP28      JP34       JP35      JP36      JP37

   64KB     Closed     JP22      2 & 3     2 & 3     2 & 3

  128KB      Open      JP23      1 & 2     1 & 2     1 & 2

  128KB     Closed     JP24      1 & 2     1 & 2     1 & 2

  256KB     Closed     JP25      2 & 3     2 & 3     2 & 3

   1MB      Closed     JP26      2 & 3     2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

             CACHE JUMPER CONFIGURATION (CON’T)

   Size      JP38      JP39       JP40      JP41      JP42

   64KB      Open      2 & 3     2 & 3      Open     2 & 3

  128KB     Closed     Open      1 & 2     Closed    2 & 3

  128KB     Closed     1 & 2     1 & 2      Open     1 & 2

  256KB      Open      2 & 3     2 & 3      Open     2 & 3

   1MB       Open      2 & 3     2 & 3      Open     2 & 3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type               JP12              JP13               JP14

      80486SX             Open           pins 2 & 3            Open
                                           closed

      80486DX            Closed          pins 1 & 2           Closed
                                           closed

   CPU SPEED CONFIGURATION

  Speed      OSC      JP27

  25MHz     50MHz     Open

  33MHz     66MHz     Open

  40MHz     40MHz    Closed

  40MHz     80MHz     Open

  50MHz     50MHz    Closed