
MICRONICS COMPUTERS, INC.

386-20

Processor            80386DX
Processor Speed      20MHz
Chip Set             Micronics
Max. Onboard DRAM    8MB (on system memory card)
Cache                16KB (on M100C and M400C system memory cards only)
BIOS                 Award/Phoenix
Dimensions           355.6mm x 255.4mm
I/O Options          32-bit system memory card slot
NPU Options          80387/3167

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose                Location

  External battery           J1         Speaker                  J22

  32-bit system memory       J11        Turbo LED                 W7
  card power

  32-bit system memory       J20        Reset switch              W9
  card

  Power LED & keylock        J21

  Note:The system memory card is inserted into both J11 & J20.

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     Factory configured - do not           SW1/1                On
      alter

      NPU enabled                           SW1/2                On

      NPU disabled                          SW1/2               Off

     Factory configured - do not           SW1/3               Off
      alter

     Video BIOS shadowing enabled          SW1/4                On

      Video BIOS shadowing disabled         SW1/4               Off

     Factory configured - do not           SW1/5               Off
      alter

     Monitor type select color             SW1/6                On

      Monitor type select                   SW1/6               Off
      monochrome

      Cache enabled                         SW1/7                On

      Cache disabled                        SW1/7               Off

     Factory configured - do not           SW1/8               Off
      alter

      BIOS type select 27128                  W1             pins 1 & 2
                                                               closed

      BIOS type select 27256                  W1             pins 2 & 3
                                                               closed

      NPU mode select synchronous             W4             pins 2 & 3
      with CPU                                                 closed
                                              W6
                                                                open

      NPU mode select asynchronous            W4             pins 1 & 2
      with CPU                                                 closed
                                              W6
                                                               closed

  Note:Cache configuration applies to main memory boards M100C and M400C
  only.

SYSTEM MEMORY CARD MODEL M100

[Image]

                  CONNECTIONS

  Purpose                          Location

  32-bit piggy back memory card     S1 & S2

                            DRAM CONFIGURATION

    Size          Bank 0            Bank 1              Jumper W1

     1MB       (36) 256K x 1         NONE        pins 2 & 3, 4 & 5, 7 & 8
                                                          closed

     2MB       (36) 256K x 1    (36) 256K x 1    pins 1 & 2, 4 & 5, 7 & 8
                                                          closed

[Image]

                  CONNECTIONS

  Purpose                          Location

  32-bit piggy back memory card     S1 & S2

                          DRAM CONFIGURATION

   Size         Bank 0          Bank 1               Jumper W1

    4MB      (36) 1M x 1         NONE         pins 1 & 2, 3 & 4 closed

    8MB      (36) 1M x 1      (36) 1M x 1        pins 3 & 4 closed

SYSTEM MEMORY CARD MODEL M300

[Image]

                  CONNECTIONS

  Purpose                          Location

  32-bit piggy back memory card     S1 & S2

                            DRAM CONFIGURATION

  Size    Bank 0    Parity    Bank 1    Parity     Bank 2        SW1
                    (P-0)               (P-1)

  1MB       (8)       (4)      NONE      NONE       NONE      switches 5,
          44256      4464                                       6, & 8
                                                                closed

  2MB       (8)       (4)       (8)       (4)       NONE      switches 3,
          44256      4464     44256      4464                  5, 6, & 8
                                                                closed

  6MB       (8)       (4)       (8)       (4)       (36)      switches 2,
          44256      4464     44256      4464      411000    3, 5, 6, & 8
                                                                closed

[Image]

                  CONNECTIONS

  Purpose                          Location

  32-bit piggy back memory card     S1 & S2

                            DRAM CONFIGURATION

    Size        Bank 0         Bank 1         Jumper W1       Jumper W3

    1MB       (36) 256K x       NONE          pins 1 & 2       closed
                   1                           closed

    2MB       (36) 256K x    (36) 256K x      pins 2 & 3       closed
                   1              1            closed

  Note:Jumper W3 enables cache controller chip. Disabling this jumper
  will decrease system speed.

SYSTEM MEMORY CARD MODEL M400C

[Image]

                            DRAM CONFIGURATION

    Size        Bank 0         Bank 1        Jumper W1        Jumper W3

    4MB       (36) 1M x 1       NONE         pins 1 & 2        closed
                                               closed

    8MB       (36) 1M x 1   (36) 1M x 1      pins 2 & 3        closed
                                               closed

  Note:Jumper W3 enables cache controller chip. Disabling this jumper
  will decrease system speed.

