
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

