
DISTRIBUTED PROCESSING TECHNOLOGY

PM2011/95 - EISA

Card Type               Hard drive controller
Maximum Onboard Memory  16.5MB
Hard Drives supported   Up to 7 SCSI devices
Floppy drives supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives
Data Bus                EISA
Card Size               Full-length, full-height

[Image]

                                CONNECTIONS

       Function           Location           Function          Location

  50-pin SCSI               CN1        Memory module              CN7
  connector - internal                 connector

  34-pin cable              CN2        Disk mirroring             CN8
  connector - floppy                   module connector
  drive

  50-pin SCSI               CN3        Disk mirroring             CN9
  connector - external                 module connector

  Cache module              CN4        Memory expansion          CN10
  connector                            board cable
                                       connector

  Cache module              CN5        Drive active LED          CN11
  connector

  Memory module             CN6
  connector

            Note:Exact size and orientation of CN4-CN11 is unidentified.

                        USER CONFIGURABLE SETTINGS

                 Function                    Label         Position

     Address lines LA17-19 and SA17-19       Y19           Closed
      are driven

      Only address lines LA17-19 are          Y19            Open
      driven

     Floppy drive interface enabled          Y20            Open

      Floppy drive interface disabled         Y20           Closed

     EPROM size 256KB enabled                Y23      Pins 2 & 3 closed

      EPROM size 512KB enabled                Y23      Pins 1 & 2 closed

     Bus mastering enabled                   Y24            Open

      Bus mastering disabled                  Y24           Closed

     Bus master DMA speed 4MB/sec            Y27           Closed
      enabled

      Bus master DMA speed 5MB/sec            Y27            Open
      enabled

     Floppy drive interface 3F0h             Y34            Open
      address enabled

      Floppy drive interface 370h             Y34           Closed
      address enabled

     Factory configured - do not alter       Y38        Unidentified

                             SCSI ID SELECTION

     SCSI ID              Y18                Y25               Y26

           0            Closed             Closed             Closed

           1            Closed              Open              Closed

           2             Open              Closed             Closed

           3             Open               Open              Closed

           4            Closed             Closed              Open

           5            Closed              Open               Open

           6             Open              Closed              Open

          7             Open               Open               Open

                           DMA CHANNEL SELECTION

         Channel                    Y31                     Y32

              0                    Open                     Open

             5                   Closed                   Closed

              6                   Closed                    Open

              7                    Open                    Closed

                          BIOS ADDRESS SELECTION

           Address                     Y36                   Y37

             C8000h                 Closed                 Closed

              D8000h                 Closed                  Open

              DC000h                  Open                  Closed

             Disabled                 Open                   Open

                        BASE I/O ADDRESS SELECTION

          Address                    Y33                     Y35

            1F0h                  Closed                  Closed

             170h                   Open                   Closed

             230h                   Open                    Open

             330h                  Closed                   Open

        INTERRUPT SELECTION

    IRQ         Y29        Y30

   IRQ12       Open       Closed

   IRQ14      Closed      Closed

   IRQ15      Closed       Open

  Disabled     Open        Open

         MEMCS16 ISA BUS SIGNAL SELECTION

     Setting           Y21              Y28

  Ignore signal        Open            Closed

  Decode signal       Closed            Open

                             DIAGNOSTIC LED(S)

   LED           Color             Status               Condition

  1 - 8      Unidentified       Rotate in bit    Controller in Idle state
                                  pattern

                                                   Controller in Active
                                                          state:

    1        Unidentified            On                    Busy

    2        Unidentified            On          Computer bus transfer to
                                                        controller

    3        Unidentified            On            Computer bus transfer
                                                     from controller

    4        Unidentified            On                 Cache hit

    5        Unidentified            On           Disk read-ahead active

    6        Unidentified            On                 Disk read

    7        Unidentified            On                 Disk write

    8        Unidentified            On              Controller reset

    9        Unidentified            On            Controller interrupt
                                                   pending to computer

    10       Unidentified            On          DRQ asserted to computer

  1 - 4,     Unidentified         Blinking       Controller in Fatal Trap
  5 - 8                           together          state (will not let
                                alternately           computer boot)

                                                  Controller in power up
                                                    state (3 stages):

  1 - 10     Unidentified            On            (1) Display amount of
                                                     cache in a binary
                                                  pattern, with LED 1 as
                                                   the least significant
                                                      binary digit.

   1, 2,     Unidentified         Blinking          (2) Waiting period
   5, 6                           together
                                alternately

   2, 3,     Unidentified         Blinking          (2) Waiting period
   6, 7                           together
                                alternately

   1, 3,     Unidentified         Blinking         (3) Contact is being
   5, 7                           together         established with SCSI
                                alternately               drives

  2, 4, 6    Unidentified         Blinking         (3) Contact is being
                                  together         established with SCSI
                                alternately               drives

                       MISCELLANEOUS TECHNICAL NOTES

  The controller cannot use caching without the CM401X caching module.
  The MM401X memory modules cannot operate without the caching module.

  The memory modules come in 2MB and 4MB size but can only be installed
  one at the time unless the MX401X expansion card is connected to the
  controller.

  DM401X is the disk mirroring module which provide RAID 1 disk mirroring
  capability.

