UNIDENTIFIED

8MHz SYSTEM BOARD

Processor         8088
Processor Speed   4.77/8MHz
Chip Set          Unknown
Max. Onboard DRAM 640KB
Cache             None
BIOS              ATI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       8087

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Speaker                     CN1      Reset switch                JP1

                        USER CONFIGURABLE SETTINGS

                Function                     Switch          Position

  »   Factory configured - do not            SW1/1             Off
      alter

  »   NPU enabled                            SW1/2              On

      NPU disabled                           SW1/2             Off

                            DRAM CONFIGURATION

  Size    Bank 0    Bank 1    Bank 2    Bank 3    JP3     SW1/3    SW1/4

  256KB     (9)       (9)       (9)       (9)     pins     On       Off
           4164      4164      4164      4164     1 & 2

  640KB     (9)       (9)       (9)       (9)     pins     Off      On
           41256     41256    41256     41256     2 & 3

  Note:Pins designated should be in the closed position.

  The exact locations of Banks 0 through 4 is unknown.

                      MONITOR TYPE CONFIGURATION

          Type                   SW1/5                   SW1/6

   No display adapter             On                      On

  Color (40 x 20 mode)            Off                     On

  Color (80 x 25 mode)            On                      Off

   Monochrome or both             Off                     Off

                     FLOPPY DRIVES INSTALLED

  Drive(s) Installed      SW1/switch 7          SW1/switch 8

          1                    On                    On

          2                    Off                   On

          3                    On                    Off

          4                    Off                   Off

                          CPU SPEED CONFIGURATION

                Speed                                 JP2

               4.77MHz                         pins 2 & 3 closed

                8MHz                                  Open

  Note:The system runs at 8MHz when the power is switched on but can be
  changed to 4mhz by pressing <CTRL> <ALT> <-> and closing pins 1 & 2. To
  return back to high speed, press the three keys once again.