LEADING TECHNOLOGY

12/286MX

Processor         80286
Processor Speed   12MHz
Chip Set          Unidentified
Max. Onboard DRAM 2MB
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80287 (exact location unidentified)

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External Battery            J1       Speaker                     J8

  Turbo LED                   J6       Power LED & keylock         J9

  Reset switch                J7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                J3           pins 2 & 3
                                                              closed

      Monitor type select monochrome           J3           pins 1 & 2
                                                              closed

  »   Parity check disabled                    J4           pins 1 & 2
                                                              closed

      Parity check enabled                     J4           pins 2 & 3
                                                              closed

  »   Turbo enabled                            J5           pins 1 & 2
                                                              closed

      Turbo disabled                           J5           pins 2 & 3
                                                              closed

  »   Wait state select 0 wait state          J10           pins 1 & 2
                                                              closed

      Wait state select 1 wait state          J10           pins 2 & 3
                                                              closed

  »   Factory configured - do not             J12              N/A
      alter

  »   Reset select power good                 J13           pins 1 & 2
                                                              closed

      Reset select RC circuit                 J13           pins 2 & 3
                                                              closed

  »   BIOS type select 64K                    J14           pins 1 & 2
                                                              closed

      BIOS type select 32K                    J14           pins 2 & 3
                                                              closed

  »   Factory configured - do not             J15              Open
      alter

  »   Factory configured - do not             J16              N/A
      alter

  »   NPU speed select 24MHz                  J17           pins 2 & 3
                                                              closed

      NPU speed select 12MHz                  J17           pins 1 & 2
                                                              closed

                      DRAM CONFIGURATION

    Size       Bank 0       Bank 1       Bank 2       Bank 3

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

    1MB       (4) 44256    (4) 44256      NONE         NONE

   1152KB     (4) 44256    (4) 4464    (4) 44256       NONE

   1536KB     (4) 44256    (4) 44256   (4) 44256       NONE

   1664KB     (4) 44256    (4) 4464    (4) 44256    (4) 44256

    2MB       (4) 44256    (4) 44256   (4) 44256    (4) 44256

                   DRAM PARITY CONFIGURATION

    Size         P0           P1           P2           P3

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

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

   1152KB     (2) 41256    (2) 4164    (2) 41256       NONE

   1536KB     (2) 41256    (2) 41256   (2) 41256       NONE

   1664KB     (2) 41256    (2) 4164    (2) 41256    (2) 41256

    2MB       (2) 41256    (2) 41256   (2) 41256    (2) 41256

       DRAM SWITCH CONFIGURATION

   Size     SW1/1     SW1/2    SW1/3

  640KB      On        On        On

   1MB       On        Off      Off

  1152KB     On        On       Off

  1536KB     Off       On        On

  1664KB     On        Off       On

   2MB       Off       On       Off