
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

