
MICRONICS COMPUTERS, INC.

80486 ASIC ISA

Processor         80486DX
Processor Speed   25/33MHz
Chip Set          Micronics
Max. Onboard DRAM 64MB
Cache             64/128/256KB
BIOS              Phoenix
Dimensions        350mm x 304mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J13       Turbo LED                  W9

  Speaker                     J30       Reset switch               W10

  Power LED & keylock         J31       Turbo switch               W11

                        USER CONFIGURABLE SETTINGS

                Function                     Switch          Position

     Factory configured - do not alter       SW1/1             Off

     Factory configured - do not alter       SW1/2             Off

     Factory configured - do not alter       SW1/3             Off

     Factory configured - do not alter       SW1/4             Off

     Factory configured - do not alter       SW1/5             Off

     CPU speed select 25MHz                  SW1/6             On

      CPU speed select 33MHz                  SW1/6             Off

     Video BIOS cacheing enabled             SW1/7             Off

      Video BIOS cacheing disabled            SW1/7             On

     Factory configured - do not alter       SW1/8             Off

     DRAM speed select 0 wait states         SW2/6             Off

      DRAM speed select 1 wait state          SW2/6             On

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9      NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9      NONE           NONE

     3MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9      NONE

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

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

     5MB        (4) 256K x 9   (4) 1M x 9        NONE           NONE

     6MB        (4) 256K x 9   (4) 256K x 9   (4) 1M x 9        NONE

     7MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9   (4) 1M x 9

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

     9MB        (4) 256K x 9   (4) 1M x 9     (4) 1M x 9        NONE

     10MB       (4) 256K x 9   (4) 256K x 9   (4) 1M x 9     (4) 1M x 9

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

     13MB       (4) 256K x 9   (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

     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) 1M x 9     (4) 4M 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) 1M x 9     (4) 4M x 9

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

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

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

                     DRAM CONFIGURATION (CONT)

    Size         Bank 0       Bank 1        Bank 2        Bank 3

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

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

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

  Note:If using 16MB or more you must disable BIOS shadowing.

              DRAM SWITCH CONFIGURATION

  Size    SW2/1    SW2/2    SW2/3    SW2/4    SW2/5

  1MB      On       On       On       On       On

  2MB      Off      On       On       On       On

  3MB      On       Off      On       On       On

  4MB      Off      Off      On       On       On

  4MB      On       On       Off      On       On

  5MB      On       On       Off      Off      On

  6MB      On       Off      On       Off      On

  7MB      Off      On       On       Off      On

  8MB      Off      On       Off      On       On

  9MB      On       Off      Off      Off      On

  10MB     Off      Off      On       Off      On

  12MB     On       Off      Off      On       On

  13MB     Off      Off      Off      Off      On

  16MB     Off      Off      Off      On       On

  16MB     On       On       Off      On       Off

  20MB     On       On       Off      Off      Off

  24MB     On       Off      On       Off      Off

  28MB     Off      On       On       Off      Off

  32MB     Off      On       Off      On       Off

  36MB     On       Off      Off      Off      Off

  40MB     Off      Off      On       Off      Off

  48MB     On       Off      Off      On       Off

  52MB     Off      Off      Off      Off      Off

  64MB     Off      Off      Off      On       Off

            CACHE CONFIGURATION

     Size          Bank 0        Bank 1

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

     128KB       (4) 32K x 8      NONE

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

            CACHE JUMPER/SWITCH CONFIGURATION

  Size      SW2/7       SW2/8         W5          W6

  64KB       Off         Off         Open        Open

  128KB      On           On        Closed       Open

  256KB      Off          On        Closed      Closed

