
ITT CORPORATION

XTRA/PROFESSIONAL SERIES 400

Processor         80286
Processor Speed   6/10MHz
Chip Set          Unidentified
Max. Onboard DRAM 1MB (exact location unidentified)
Cache             None
BIOS              Unidentified
Dimensions        355mm x 305mm
I/O Options       Floppy drive interface
NPU Options       80287

[Image]

                    CONNECTIONS

         Purpose                  Location

  Floppy drive interface             CN1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             JP6           pins 2 & 3
      alter                                                   closed

     Floppy drive interface enabled          JP7           pins 1 & 2
                                                              closed

      Floppy drive interface disabled         JP7           pins 2 & 3
                                                              closed

     Floppy drive address select 37X         JP8           pins 1 & 2
                                                              closed

      Floppy drive address select 3FX         JP8           pins 2 & 3
                                                              closed

     Hard drive controller installed         JP9           pins 1 & 2
                                                              closed

      Hard drive controller not               JP9           pins 2 & 3
      installed                                               closed

     Power on wait state select 1            JP10          pins 1 & 2
      wait states                                             closed

      Power on wait state select 0            JP10          pins 2 & 3
      wait state                                              closed

                        DRAM CONFIGURATION

                               Size

                               256KB

                               512KB

                               640KB

                                1MB

  Note:The chip size and location of the memory is unidentified.

                  DRAM JUMPER CONFIGURATION

        Size                 JP4                  JP5

        256KB          pins 2 & 3 closed   pins 1 & 2 closed

        512KB          pins 1 & 2 closed   pins 1 & 2 closed

        640KB          pins 2 & 3 closed   pins 2 & 3 closed

         1MB           pins 1 & 2 closed   pins 2 & 3 closed

     CPU POWER UP SPEED CONFIGURATION

        Speed                JP3

        6MHz          pins 2 & 3 closed

        10MHz         pins 1 & 2 closed

                      BIOS CONFIGURATION

        Type                 JP1                  JP2

        EPROM          pins 1 & 2 closed   pins 1 & 2 closed

     Masked ROM        pins 2 & 3 closed   pins 2 & 3 closed

