
ACS, INC.

ET286+

Processor              80286
Processor Speed        6/10MHz
Chip Set               Unidentified
Video Chip Set         None
Maximum Onboard Memory 4MB
Maximum Video Memory   None
Cache                  None
BIOS                   Unidentified
Dimensions             351mm x 304mm
I/O Options            Parallel ports (2), serial ports (3)
NPU Options            80287

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J25      Parallel port LPT1          P2

  Power LED & keylock         J34      Serial port 2               P3

  Speaker                     J35      Parallel port LPT2          P4

  Serial port 3               P1       Serial port 1               P5

                        USER CONFIGURABLE SETTINGS

             Function                  Label              Position

      Serial port 2 IRQ4 enabled    J17/pins 9 &           Closed
                                         10

      Serial port 2 IRQ4            J17/pins 9 &            Open
      disabled                           10

      Serial port 1 IRQ3 enabled     J17/pins 11           Closed
                                        & 12

      Serial port 1 IRQ3             J17/pins 11            Open
      disabled                          & 12

      Parallel port 1 IRQ7           J17/pins 13           Closed
      enabled                           & 14

      Parallel port 1 IRQ7           J17/pins 13            Open
      disabled                          & 14

      Parallel port 2 IRQ5           J17/pins 15           Closed
      enabled                           & 16

      Parallel port 2 IRQ5           J17/pins 15            Open
      disabled                          & 16

     Serial port 1 select              J18          Pins 5 & 6, 9 & 10
      RS-232C                                              closed

      Serial port 1 select              J18        Pins 1 & 2, 3 & 4, 7 &
      RS-422                                              8 closed

     Serial port 2 select              J19           Pins 1 & 2, 5 & 6
      RS-232C                                              closed

      Serial port 2 select              J19        Pins 3 & 4, 7 & 8, 9 &
      RS-422                                             10 closed

     Serial port 3 select              J20           Pins 1 & 2, 5 & 6
      RS-232C                                              closed

      Serial port 3 select              J20        Pins 3 & 4, 7 & 8, 9 &
      RS-422                                             10 closed

      Jumper information                J21             Unidentified
      unavailable

     Power good disabled               J22                 Open

      Reset using power good            J22                Closed

     6MHz using 1 wait state           J23                 Open

      6MHz using 0 wait states          J23                Closed

      Jumper information                J26             Unidentified
      unavailable

     Monitor type select color     J27/pins 1 &           Closed
                                         2

      Monitor type select           J27/pins 1 &            Open
      monochrome                         2

     Keyboard type select PC-AT    J27/pins 3 &           Closed
                                         4

      Keyboard type select PC-XT    J27/pins 3 &            Open
                                         4

      Jumper information                J28             Unidentified
      unavailable

      Jumper information                J30             Unidentified
      unavailable

     Wait state select 1 wait          J31          Pins 2 & 4 closed
      state

      Wait state select 2 wait          J31          Pins 1 & 3 closed
      states

                    USER CONFIGURABLE SETTINGS (CON'T)

             Function                  Label              Position

      Serial port 1 enabled         J32/pins 1 &           Closed
                                         2

      Serial port 1 disabled        J32/pins 1 &            Open
                                         2

      Serial port 2 enabled         J32/pins 3 &           Closed
                                         4

      Serial port 2 disabled        J32/pins 3 &            Open
                                         4

      Serial port 3 enabled         J32/pins 5 &           Closed
                                         6

      Serial port 3 disabled        J32/pins 5 &            Open
                                         6

      Parallel port 1 enabled       J32/pins 7 &           Closed
                                         8

      Parallel port 1 disabled      J32/pins 7 &            Open
                                         8

      Parallel port 2 enabled        J32/pins 11           Closed
                                        & 12

      Parallel port 2 disabled       J32/pins 11            Open
                                        & 12

      Jumper information                J33             Unidentified
      unavailable

     BIOS type select 27128            J36          Pins 1 & 3 closed

      BIOS type select 27256            J36           Pins 2 & 4, 3 & 5
                                                           closed

      BIOS type select 27512            J36           Pins 3 & 5, 4 & 6
                                                           closed

      Jumper information                J37             Unidentified
      unavailable

      Jumper information                J38             Unidentified
      unavailable

                            DRAM CONFIGURATION

          Size                   Bank 0                    Bank 1

         256KB                  (16) 4164                (16) 4164

         512KB                 (16) 41256                   None

         640KB                 (16) 41256                (16) 4164

          1MB                  (16) 41256                (16) 41256

      1640KB * **              (16) 411000               (16) 41256

         2MB **                (16) 411000                  None

    2128KB (A) * **            (16) 41256               (16) 411000

    2128KB (B) * **            (16) 411000               (16) 41256

         4MB **                (16) 411000              (16) 411000

  Note: The size are shown without parity chips The size of the parity is
  unidentified. The location of banks 0 & 1 are unidentified. * =
  Configuration not available on Rev. A boards. ** = Requires special
  configuration for 1MB memory devices.

                      DRAM SWITCH CONFIGURATION

     Size         SW1/1         SW1/2        SW1/3         SW1/4

    256KB          On            On            On            On

    512KB          Off           Off           On            On

    640KB          Off           On            On            On

     1MB           Off           On            On           Off

    1640KB         Off           Off          Off            On

     2MB           Off           Off           On           Off

  2128KB (A)       Off           On           Off           Off

  2128KB (B)       Off           On           Off            On

     4MB           Off           Off          Off           Off

                         DRAM JUMPER CONFIGURATION

                 Size                                  J39

              4164/41256                 1 & 2, 4 & 5, 10 & 11, 13 & 14,
                                                19 & 20, 22 & 23

                411000                   5 & 6, 8 & 9, 14 & 15, 17 & 18,
                                                20 & 21, 23 & 24

  Note: Pins designated should be in the closed position.

                            CPU SPEED SELECTION

                    Speed                                 J29

           Speed select by keyboard                Pins 1 & 2 closed
  CTRL/ALT/SHIFT/DEL changes speed from 6MHZ
           to 10MHz and vice versa

                    6MHz                           Pins 2 & 3 closed

                    10MHz                                Open

                      SERIAL PORT INTERRUPT SELECTION

     IRQ       J17/pins 1 &   J17/pins 3 &   J17/pins 5 &    J17/pins 7
                    2              4              6             & 8

    IRQ10         Closed          Open           Open          Open

     IRQ11         Open          Closed          Open          Open

     IRQ12         Open           Open          Closed         Open

     IRQ15         Open           Open           Open         Closed

