
AMERICAN DIGICOM CORPORATION

286E

Processor         80286
Processor Speed   12/16/20MHz
Chip Set          Suntac
Max. Onboard DRAM 5MB
Cache             None
BIOS              AMI
Dimensions        230mm x 220mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         JP1      Turbo LED                   JP4

  Speaker                     JP2      Turbo switch                JP5

  Reset switch                JP3      External battery           JP18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

      NPU speed select CPU CLK/1            JP7 & JP8        pins 1 & 2
                                                              closed

      NPU speed select CPU CLK/3            JP7 & JP8        pins 2 & 3
                                                              closed

     Monitor type select color                JP9            Closed

      Monitor type select monochrome           JP9             Open

     Parity check enabled                    JP10            Closed

      Parity check disabled                   JP10             Open

     CPU speed select 16/20MHz               JP12           pins 1 & 2
                                                              closed

      CPU speed select 12MHz                  JP12           pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP17           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP17           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

   Size     Bank 0      Parity    Bank 1      Parity    Bank 2    Bank 3
                        (P-0)                 (P-1)

  512KB       (4)        (2)       NONE       NONE       NONE      NONE
             44256      41256

  512KB      NONE       NONE       NONE       NONE        (2)      NONE
                                                        256K x
                                                          9

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

   1MB       NONE       NONE       NONE       NONE        (2)       (2)
                                                        256K x     256K x
                                                          9          9

   2MB        (4)        (2)        (4)        (2)        (2)       (2)
             44256      41256      44256      41256     256K x     256K x
                                                          9          9

   2MB       NONE       NONE       NONE       NONE      (2) 1M     NONE
                                                         x 9

   3MB        (4)        (2)        (4)        (2)      (2) 1M     NONE
             44256      41256      44256      41256      x 9

   4MB       NONE       NONE       NONE       NONE      (2) 1M     (2) 1M
                                                         x 9        x 9

   5MB        (4)        (2)        (4)        (2)      (2) 1M     (2) 1M
             44256      41256      44256      41256      x 9        x 9

  Note:Banks 2 & 3 are considered Banks 0 & 1, respectively, when filled
  without using DIP.

  However, they will be referred to throughout the text as Banks 2 & 3 to
  avoid confusion.

                         DRAM JUMPER CONFIGURATION

    Size          JP13            JP14           JP15           JP16

    512KB       pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

    512KB       pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 1 & 2
                 closed          closed         closed         closed

     1MB        pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

     1MB        pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 1 & 2
                 closed          closed         closed         closed

     2MB        pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

     2MB        pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 1 & 2
                 closed          closed         closed         closed

     3MB        pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

     4MB        pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 1 & 2
                 closed          closed         closed         closed

     5MB        pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

                   NPU SPEED CONFIGURATION

        Speed                JP7                  JP8

        CLK/1          pins 1 & 2 closed   pins 1 & 2 closed

        CLK/3          pins 2 & 3 closed   pins 2 & 3 closed

