
MONOLITHIC SYSTEMS, INC. (COLORADO MSI)

JUSTRAM/ATZ

Card Type              Memory
Maximum Onboard Memory 8MB DRAM
Data Bus               16-bit ISA

[Image]

                                CONNECTIONS

          Function            Label            Function            Label

  Daughterboard header        CN1A     Header to main board (on    CN2B
                                       back)

  Header to main board (on    CN1B     Daughterboard header        CN3A
  back)

  Daughterboard header        CN2A     Header to main board (on    CN3B
                                       back)

                        USER CONFIGURABLE SETTINGS

                  Setting                    Label          Position

     Factory configured - do not alter        E1         Unidentified

     Normal address timing                   JP5      Pins 1 & 2 closed

      20ns delay for non-compatible           JP5      Pins 2 & 3 closed
      machines

     Factory configured - do not alter       JP8      Pins 2 & 3 closed

     Zero wait states enabled                JP13           Closed

      Zero wait states disabled               JP13            Open

                                   DRAM

    Setting        Bank 0           P0          Bank 1           P1

      2MB       (16) 1M x 1     (2) 1M x 1       None           None

      4MB       (16) 1M x 1     (2) 1M x 1    (16) 1M x 1    (2) 1M x 1

      6MB       (16) 1M x 1     (2) 1M x 1    (16) 1M x 1    (2) 1M x 1

      8MB       (16) 1M x 1     (2) 1M x 1    (16) 1M x 1    (2) 1M x 1

                               DRAM (CONT)

    Setting        Bank 2           P2          Bank 3           P3

      2MB           None           None          None           None

      4MB           None           None          None           None

      6MB       (16) 1M x 1     (2) 1M x 1       None           None

      8MB       (16) 1M x 1     (2) 1M x 1    (16) 1M x 1    (2) 1M x 1

                            CONVENTIONAL MEMORY

                    Setting                        SW1/7         SW1/8

      All memory on board used for extended        Off           Off
                or expanded memory

           First 128KB on board used for            On            On
          conventional memory above 512KB

                    EXPANDED MEMORY BASE I/O ADDRESSES

  Main Board     Daughter Board     SW1/1         SW1/2         SW1/3

     208h            218h            On            On             On

     228h            238h            On            On            Off

     248h            258h            On            Off            On

     268h            278h            On            Off           Off

     288h            298h            Off           On             On

     2A8h            2B8h            Off           On            Off

     2C8h            2D8h            Off           Off            On

     2E8h            2F8h            Off           Off           Off

      EXTENDED MEMORY SIZE

  Setting    SW1/5      SW1/6

    0MB       N/A        N/A

    2MB        On        On

    4MB        On        Off

    6MB       Off        Off

    8MB       Off        Off

                     EXTENDED MEMORY STARTING ADDRESS

  Setting    SW2/1  SW2/2   SW2/3   SW2/4   SW2/5   SW2/6   SW2/7   SW2/8

  1024KB      On     On      On      Off     On      On      On      On

  1152KB      On     On      On      Off     On      On     Off      On

  1280KB      On     On      On      Off     On     Off      On      On

  1408KB      On     On      On      Off     On     Off     Off      On

  1536KB      On     On      On      Off     Off     On      On      On

  15744KB    Off     Off     Off     Off     On     Off     Off      On

  15872KB    Off     Off     Off     Off     Off     On      On      On

  16000KB    Off     Off     Off     Off     Off     On     Off      On

  16128KB    Off     Off     Off     Off     Off    Off      On      On

  16256KB    Off     Off     Off     Off     Off    Off     Off      On

  Disabled   Off     Off     Off     Off     Off    Off     Off      Off

            Note: A total of 112 memory address settings are available.
            The switches are a binary representation of the decimal
            memory addresses. SW2/1 is the Most Significant Bit and
            switch SW2/7 is the Least Significant Bit. The switches have
            the following decimal values: SW2/1=8192, SW2/2=4096,
            SW2/3=2048, SW2/4=1024, SW2/5=512, SW2/6=256, SW2/7=128. Turn
            off the switches and add the values of the switches that are
            off obtain the correct starting memory address. (Off=1,
            On=0). SW2/8 does not affect the address, but enables or
            disabled extended memory. If SW2 is set to Disabled, SW3
            should also be set to Disabled.

                      EXTENDED MEMORY ENDING ADDRESS

  Setting    SW3/1  SW3/2   SW3/3   SW3/4   SW3/5   SW3/6   SW3/7   SW3/8

  1152KB      On     On      On      Off     On      On      On      Off

  1280KB      On     On      On      Off     On      On     Off      Off

  1408KB      On     On      On      Off     On     Off      On      Off

  1536KB      On     On      On      Off     On     Off     Off      Off

  1664KB      On     On      On      Off     Off     On      On      Off

  15872KB    Off     Off     Off     Off     On     Off     Off      Off

  16000KB    Off     Off     Off     Off     Off     On      On      Off

  16128KB    Off     Off     Off     Off     Off     On     Off      Off

  16256KB    Off     Off     Off     Off     Off    Off      On      Off

  16384KB    Off     Off     Off     Off     Off    Off     Off      Off

  Disabled    On     On      On      On      On      On      On      On

            Note: A total of 112 memory address settings are available.
            The switches are a binary representation of the decimal
            memory addresses. SW3/1 is the Most Significant Bit and
            switch SW3/7 is the Least Significant Bit. The switches have
            the following decimal values: SW3/1=8192, SW3/2=4096,
            SW3/3=2048, SW3/4=1024, SW3/5=512, SW3/6=256, SW3/7=128. Turn
            off the switches and add the values of the switches that are
            off to 128KB obtain the correct starting memory address.
            (Off=1, On=0). SW3/8 does not affect the address, but enables
            or disabled extended memory. If SW3 is set to Disabled, SW2
            should also be set to Disabled.

                       MISCELLANEOUS TECHNICAL NOTE

            The board may be configured for any combination of
            conventional, expanded, and extended memory. When
            conventional memory is enabled, be sure to subtract 128KB
            from the remaining memory. When configured for both extended
            and expanded memory, the memory on the main board will act as
            the extended memory, and the memory on the daughter board
            will be the expanded memory.

