
UNIDENTIFIED

HT 12 286

Processor         80286
Processor Speed   12/16MHz
Chip Set          Headland
Max. Onboard DRAM 4MB
Cache             None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo switch               JP2       Speaker                     JP5

  Turbo LED                  JP3       Power LED & keylock         JP6

  Reset switch               JP4       External battery           JP10

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        JP1              N/A

     BIOS type select 27512                   JP7           pins 1 & 2
                                                              closed

      BIOS type select 27256                   JP7           pins 2 & 3
                                                              closed

     NPU mode select synchronous with         JP8           pins 2 & 3
      CPU                                                     closed

      NPU mode select synchronous with         JP8           pins 1 & 2
      oscillator installed at Y1                              closed

     NPU speed select source/1                JP9           pins 1 & 2
                                                              closed

      NPU speed select source/3                JP9           pins 2 & 3
                                                              closed

     CPU speed select 16MHz                  JP11           pins 2 & 3
                                                              closed

      CPU speed select 12MHz                  JP11           pins 1 & 2
                                                              closed

     Monitor type select color               JP12            Closed

      Monitor type select monochrome          JP12             Open

                            DRAM CONFIGURATION

   Size      Bank 0      P-0       Bank 1       P-1      Bank 2   Bank 3

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

  640KB        (4)        (2)      (4) 4464     (2)       NONE     NONE
             44256      41256                  41256

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

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

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

