CORONA COMPTER CORPORATION

PORTABLE PC

Processor                  8088
Processor Speed            Unidentified
Chip Set                   Unidentified
Video Chip Set             Unidentified
Maximum Onboard Memory     512KB
Maximum Video Memory       Unidentified
Cache                      None
BIOS                       Unidentified
Dimensions                 355mm x 304mm
I/O Options                Floppy drive interface, serial ports (2), light
                           pen connector
NPU Options                8087

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Serial port                 J7       Light pen connector         P2

  Serial port                 J8       Speaker                     P3

  Floppy drive interface      J9

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Factory configured – do not           J1           Unidentified
      alter

  »   Factory configured – do not           J2           Unidentified
      alter

      BIOS type select 8KB                  JP1             Closed

      BIOS type select 16KB                 JP1              Open

      Keyboard voltage select 12v           JP2        Pins 1 & 2 closed

      Keyboard voltage select 5v            JP2        Pins 2 & 3 closed

  »   Factory configured – do not           P4           Unidentified
      alter

  »   Factory configured – do not           P5           Unidentified
      alter

      NPU not installed                    S2/1               On

      NPU installed                        S2/1               Off

      Floppy drives installed 1            S2/2               On

      Floppy drives installed 2            S2/2               Off

                      DRAM CONFIGURATION

    Size       Bank 0       Bank 1       Bank 2       Bank 3

   128KB      (16) 4164      None         None         None

   256KB      (16) 4164    (16) 4164      None         None

   384KB      (16) 4164    (16) 4164   (16) 4164       None

   512KB      (16) 4164    (16) 4164   (16) 4164    (16) 4164

  Note: The location of banks 0, 1, 2 & 3 are unidentified.

  DRAM SWITCH CONFIGURATION

   Size      S2/5     S2/6

  128KB       On       On

  256KB      Off       On

  384KB      Off       Off

  512KB      Off       Off

                   MONITOR SELECTION

      Setting             S2/3               S2/4

       None                On                 On

  Color (40 x 25)         Off                 On

  Color (80 x 25)          On                Off

    Monochrome            Off                Off