
MICRO COMPUTER SYSTEMS CORPORATION

V-286

Processor         80286
Processor Speed   12MHz
Chip Set          VLSI
Max. Onboard DRAM 4MB
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch                W6       Speaker                     W15

  Turbo LED                   W7       External battery            W16

  Turbo switch               W11       Power LED & keylock         W18

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

     Zero wait state enabled               SW1/1               Off

      Zero wait state disabled              SW1/1               On

     Keyboard controlled speed             SW1/2               On
      switch enabled

      Keyboard controlled speed             SW1/2               Off
      switch disabled

     Monitor type select color             SW1/3               Off

      Monitor type select                   SW1/3               On
      monochrome

     NPU clock speed select                SW1/4               On
      7.159MHz

      NPU clock speed select                SW1/4               Off
      14.318MHz

     Fastmode enabled                      SW1/5               On

      Fastmode disabled                     SW1/5               Off

     ROM wait state select 2 wait          SW1/6               On
      states

      ROM wait state select 1 wait          SW1/6               Off
      state

     Factory configured - do not           SW1/7               Off
      alter

     AT bus speed select 6MHz              SW1/8               On

      AT bus speed select 8MHz              SW1/8               Off

     Factory configured - do not            W8               Closed
      alter

     BIOS type select 27256                 W9              pins 2 & 3
                                                              closed

      BIOS type select 27128                 W9              pins 1 & 2
                                                              closed

     Battery type select internal           W12             pins 1 & 2
                                                              closed

      Battery type select external           W12             pins 2 & 3
                                                              closed

     Parity enabled                         W13             pins 2 & 3
                                                              closed

      Parity disabled                        W13             pins 1 & 2
                                                              closed

  Note: The locations of W12 & W13 are unidentified.

                            DRAM CONFIGURATION

  Size     Bank 0     Parity 0    Bank 1    Parity 1   Bank 2     Bank 3

  512KB      (16)        (2)       NONE       NONE      NONE       NONE
            41256      41256

  640KB      (16)        (2)       (16)     (2) 4164    NONE       NONE
            41256      41256       4164

  640KB      (16)        (2)       NONE     (2) 4164     (4)       NONE
            41256      41256                            44256

   1MB       (16)        (2)       (16)        (2)      NONE       NONE
            41256      41256      41256      41256

   1MB      NONE         (2)       NONE        (2)       (4)        (4)
                       41256                 41256      44256     44256

   2MB       (16)        (2)       NONE       NONE      NONE       NONE
           411000      411000

   4MB       (16)        (2)       (16)        (2)      NONE       NONE
           411000      411000     411000     411000

       DRAM JUMPER CONFIGURATION

   Size       W1       W2        W3

  512KB     Closed   Closed    Closed

  640KB     Closed   Closed     Open

  640KB     Closed   Closed     Open

   1MB       Open    Closed    Closed

   1MB       Open    Closed    Closed

   2MB       Open    Closed     Open

   4MB      Closed    Open     Closed

