UNIDENTIFIED

ELT-286B-120GM

Processor         80286
Processor Speed   10/12MHz
Chip Set          G-2
Max. Onboard DRAM 4MB
Cache             None
BIOS              AMI/Phoenix
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo LED                   J5       External battery            J24

  Power LED & keylock         J18      Turbo switch                J25

  Speaker                     J19      Reset switch                J30

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Factory configured - do not           DSW1/1              N/A
      alter

  »   NPU mode select synchronous            JNP             pins 1 & 2
      with CPU                                                 closed

      NPU mode select asynchronous           JNP             pins 2 & 3
      with CPU                                                 closed

  »   Wait state select CTRL-ALT-0           JP2             pins 1 & 2
      = 0 wait, CTRL-ALT-1 is 1                                closed
      wait

      Wait states select zero                JP2             pins 2 & 3
                                                               closed

      Wait state select one                  JP2                Open

  »   Factory test disabled                  JP22               Open

      Factory test enabled                   JP22              Closed

  »   CPU speed select switchable            JP25               Open
      from keyboard

      CPU speed select fast                  JP25              Closed

  »   Factory configured - do not            JPX                N/A
      alter

                            DRAM CONFIGURATION

   Size     Bank 0     Bank 1     Bank 2     Bank 3     Bank 4    Bank 5

  256KB       (4)        (2)       NONE       NONE       NONE      NONE
             44256      41256

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

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

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

  640KB       (4)        (2)      (4) 4464   (4) 4164    NONE      NONE
             44256      41256

  640KB      NONE       NONE      (4) 4464   (4) 4164     (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       NONE       NONE       NONE       NONE      (2) 1M     NONE
                                                         x 9

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

       DRAM SWITCH CONFIGURATION

   Size     DSW1/2   DSW1/3    DSW1/4

  256KB       On       On        On

  512KB       On       On        Off

  640KB       On       Off       On

   1MB        On       Off       Off

   2MB       Off       Off       On

   4MB       Off       Off       Off