UNIDENTIFIED

MICRO 286-12/MICRO 286-16


Processor         80286
Processor Speed   12/16MHz
Chip Set          G-2
Max. Onboard DRAM 4MB
Cache             None
BIOS              AMI
Dimensions        330.2mm x 218.4mm
I/O Options       None
NPU Options       80287

[Image]

                              CONNECTIONS

  Purpose                  Location      Purpose           Location

  Power LED & keylock         P1         Turbo LED            P4

  Speaker                     P2         Turbo switch         P5

  Reset switch                P3

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   CPU speed at boot select fast      S1/switch 1            open

      CPU speed at boot select slow      S1/switch 1           closed

  »   Bus speed select 6/8MHz            S1/switch 2            open

      Bus speed select 12/16MHz          S1/switch 2           closed

      DRAM speed select 0 wait                W3               closed
      states

      DRAM speed select 1 wait                W3                open
      state

  »   BIOS type select 27256                  W4             pins 2 & 3
                                                               closed

      BIOS type select 27128                  W4             pins 1 & 2
                                                               closed

  »   NPU mode select synchronous             W5               286CLK
      with CPU

      NPU mode select synchronous             W5                iOSC
      with Oscillator installed at
      O1

  »   Monitor type select color               W6               closed

      Monitor type select                     W6                open
      monochrome

  Note:The max. and min. speeds of the bus are equal to the max. and min.
  speeds of the CPU.

  e.g. A 16MHz system would have bus speeds of 8MHz (min.) and 16MHz
  (max).

                            DRAM CONFIGURATION

   Size     Bank 0      Bank 1        W7        S1/Switch 3  S1/Switch 4

  512KB       (18)       NONE       pins 2 &      closed        closed
             41256                 3 closed

  640KB       (18)        (18)      pins 2 &      closed         open
             41256       41256     3 closed

   1MB        (18)        (18)      pins 2 &       open          open
             41256       41256     3 closed

   2MB        (18)       NONE       pins 1 &       open         closed
            411000                 2 closed

   4MB        (18)        (18)      pins 1 &       open          open
            411000      411000     2 closed