
DECISION COMPUTER INTERNATIONAL CO., LTD.

PCDISK/512KB

Card Type              Memory-based disk
Maximum Onboard Memory 256KB SRAM/512KB EPROM
I/O Options            Auto-reset function
Data Bus               8-bit ISA

[Image]

                                CONNECTIONS

               Function                               Label

  Auto-reset connector (see pinout                     JP5
  below)

                                JP5 PINOUT

         Function             Pin             Function              Pin

  To reset switch on case      1      To reset function on           3
                                      mainboard

  To reset switch on case      2      To reset function on           4
                                      mainboard

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     Set auto-reset check time to 4.5           JP3         Pins 1 & 2
      seconds                                                 closed

      Set auto-reset check time to 9             JP3         Pins 2 & 3
      seconds                                                 closed

     Battery charge enabled                     JP4          Closed

      Battery charge disabled                    JP4           Open

                                SRAM/EPROM

  EPROM Size   SRAM Size       U1          U2          U3          U4

    None         32KB       (1) 32K x     None        None        None
                               8

    None         64KB       (1) 32K x   (1) 32K x     None        None
                               8           8

    None         96KB       (1) 32K x   (1) 32K x   (1) 32K x     None
                               8           8           8

    None         128KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

    None         160KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

    None         192KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

    None         224KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

    None         256KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

                            SRAM/EPROM (CONT)

    EPROM     SRAM Size      U1           U2          U3           U4
    Size

    64KB        None     (1) 27512       None        None         None

    64KB        32KB     (1) 27512       None        None         None

    64KB        64KB     (1) 27512       None        None         None

    64KB        96KB     (1) 27512       None        None         None

    64KB       128KB     (1) 27512       None        None         None

   128KB        None     (1) 27512    (1) 27512      None         None

   128KB        32KB     (1) 27512    (1) 27512      None         None

   128KB        64KB     (1) 27512    (1) 27512      None         None

   128KB        96KB     (1) 27512    (1) 27512      None         None

   128KB       128KB     (1) 27512    (1) 27512      None         None

   192KB        None     (1) 27512    (1) 27512    (1) 27512      None

   192KB        32KB     (1) 27512    (1) 27512    (1) 27512      None

   192KB        64KB     (1) 27512    (1) 27512    (1) 27512      None

   192KB        96KB     (1) 27512    (1) 27512    (1) 27512      None

   192KB       128KB     (1) 27512    (1) 27512    (1) 27512      None

   256KB        None     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   256KB        32KB     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   256KB        64KB     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   256KB        96KB     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   256KB       128KB     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   320KB        None     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   384KB        None     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   448KB        None     (1) 27512    (1) 27512    (1) 27512    (1) 27512

   512KB        None     (1) 27512    (1) 27512    (1) 27512    (1) 27512

                            SRAM/EPROM (CONT)

  EPROM Size   SRAM Size       U5          U6          U7          U8

    None         32KB         None        None        None        None

    None         64KB         None        None        None        None

    None         96KB         None        None        None        None

    None         128KB        None        None        None        None

    None         160KB      (1) 32K x     None        None        None
                               8

    None         192KB      (1) 32K x   (1) 32K x     None        None
                               8           8

    None         224KB      (1) 32K x   (1) 32K x   (1) 32K x     None
                               8           8           8

    None         256KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

    64KB         None         None        None        None        None

    64KB         32KB       (1) 32K x     None        None        None
                               8

    64KB         64KB       (1) 32K x   (1) 32K x     None        None
                               8           8

    64KB         96KB       (1) 32K x   (1) 32K x   (1) 32K x     None
                               8           8           8

    64KB         128KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

    128KB        None         None        None        None        None

    128KB        32KB       (1) 32K x     None        None        None
                               8

    128KB        64KB       (1) 32K x   (1) 32K x     None        None
                               8           8

    128KB        96KB       (1) 32K x   (1) 32K x   (1) 32K x     None
                               8           8           8

    128KB        128KB      (1) 32K x   (1) 32K x   (1) 32K x   (1) 32K x
                               8           8           8            8

                            SRAM/EPROM (CONT)

    EPROM    SRAM Size       U5          U6           U7           U8
    Size

   192KB       None         None        None         None         None

   192KB       32KB       (1) 32K x     None         None         None
                             8

   192KB       64KB       (1) 32K x   (1) 32K x      None         None
                             8            8

   192KB       96KB       (1) 32K x   (1) 32K x    (1) 32K x      None
                             8            8            8

   192KB       128KB      (1) 32K x   (1) 32K x    (1) 32K x    (1) 32K x
                             8            8            8           8

   256KB       None         None        None         None         None

   256KB       32KB       (1) 32K x     None         None         None
                             8

   256KB       64KB       (1) 32K x   (1) 32K x      None         None
                             8            8

   256KB       96KB       (1) 32K x   (1) 32K x    (1) 32K x      None
                             8            8            8

   256KB       128KB      (1) 32K x   (1) 32K x    (1) 32K x    (1) 32K x
                             8            8            8           8

   320KB       None      (1) 27512      None         None         None

   384KB       None      (1) 27512    (1) 27512      None         None

   448KB       None      (1) 27512    (1) 27512    (1) 27512      None

   512KB       None      (1) 27512    (1) 27512    (1) 27512   (1) 27512

            Note:The 27512 parts are EPROMs, while the 32K x 8 parts are
            SRAMs.

                            SRAM/EPROM SETTINGS

   U1-U4      U5-U8         JP1           JP2         SW1/7       SW1/8

   EPROM      EPROM      Pins 1 & 2    Pins 1 & 2      Off         Off
                          closed         closed

   EPROM       None      Pins 1 & 2       N/A          Off         N/A
                          closed

   EPROM       SRAM      Pins 1 & 2    Pins 2 & 3      Off         On
                          closed         closed

   SRAM        SRAM      Pins 2 & 3    Pins 2 & 3       On         Off
                          closed         closed

   SRAM        None      Pins 2 & 3       N/A           On         N/A
                          closed

                             BASE I/O ADDRESS

       Setting             SW1/1             SW1/2             SW1/3

          1CCh              On                On               On

           1DCh             Off                On               On

           1ECh              On               Off               On

           2CCh             Off               Off               On

           2DCh              On                On               Off

           2ECh             Off                On               Off

           3CCh              On               Off               Off

                               BIOS ADDRESS

        Setting              SW1/4            SW1/5            SW1/6

           C0000h             On               On                On

           C4000h             Off              On                On

           C8000h             On               Off               On

           CC000h             Off              Off               On

          D0000h             On               On               Off

           D4000h             Off              On               Off

           D8000h             On               Off              Off

                   DIAGNOSTIC LED(S)

            The function of the LED is unidentified.

