
UNIDENTIFIED

CMC-820

Processor         80386DX
Processor Speed   10/20MHz
Chip Set          C & T
Max. onboard DRAM 16MB
Cache             None
BIOS              Unknown
Dimensions        330mm x 218mm
I/O Options       32-bit external memory cards (2)
NPU Options       80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            J1        Speaker                   J11

  Turbo LED                   J7        Keylock                   J12

  Reset Switch                J10       32-bit system memory    S1 & S2
                                        cards

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     BIOS type select 27128 or              J3              pins 1 & 2
      27256                                                    closed

      BIOS type select 27512                 J3              pins 2 & 3
                                                               closed

     Monitor type select color              J5                Closed

      Monitor type select                    J5                 Open
      monochrome

     NPU enabled                            J6                Closed

      NPU disabled                           J6                 Open

     NPU type select Intel or               J9                Closed
      80387

      NPU type select Weitek 3167            J9                 Open

                            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

     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

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

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

  Note:The numbering of bank 0 and bank 1 are located on the system
  board.

  Banks 2 & 3 are located on the external memory card.

                   CPU SPEED CONFIGURATION

        Speed                 J4                   J8

        10MHz          pins 2 & 3 closed   pins 1 & 2 closed

        20MHz          pins 1 & 2 closed   pins 2 & 3 closed

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Serial port DB-9          J101       Parallel port DB-9        J103

  Serial port 10-pins       J102       Parallel port             J104
  header                               10-pins header

                             I/O CONFIGURATION

     Port       SW1/switch 1   SW1/switch 2   SW1/switch 3   SW1/switch 4

  Serial port        On            Off             On             On
     DB-9

  Serial port        On             On             On            Off
    10-pins
    header

    Parallel         On             On            Off             On
   port DB-9

    Parallel        Off             On             On             On
  port 10-pins
    header


