DISTRIBUTED PROCESSING TECHNOLOGY
=================================

   PM2011/95 - EISA

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

<gopher://bitreich.org/I/th99/c/C-D/21469-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |   Function    | Location |       Function       | Location |
   |---------------+----------+----------------------+----------|
   | 50-pin SCSI   |   CN1    | Memory module        |   CN7    |
   | connector -   |          | connector            |          |
   | internal      |          |                      |          |
   |---------------+----------+----------------------+----------|
   | 34-pin cable  |   CN2    | Disk mirroring       |   CN8    |
   | connector -   |          | module connector     |          |
   | floppy drive  |          |                      |          |
   |---------------+----------+----------------------+----------|
   | 50-pin SCSI   |   CN3    | Disk mirroring       |   CN9    |
   | connector -   |          | module connector     |          |
   | external      |          |                      |          |
   |---------------+----------+----------------------+----------|
   | 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       |  Y19  |    Closed    |
   |   | SA17-19 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     |  Y38  | Unidentified |
   |   | alter                           |       |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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  | Controller in Idle |
   |          |              | bit pattern |       state        |
   |----------+--------------+-------------+--------------------|
   |          |              |             |   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, 5 | Unidentified |  Blinking   |   Controller in    |
   |   - 8    |              |  together   |  Fatal Trap state  |
   |          |              | alternately |   (will not let    |
   |          |              |             |   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, 5, | Unidentified |  Blinking   | (2) Waiting period |
   |    6     |              |  together   |                    |
   |          |              | alternately |                    |
   |----------+--------------+-------------+--------------------|
   | 2, 3, 6, | Unidentified |  Blinking   | (2) Waiting period |
   |    7     |              |  together   |                    |
   |          |              | alternately |                    |
   |----------+--------------+-------------+--------------------|
   | 1, 3, 5, | Unidentified |  Blinking   |   (3) Contact is   |
   |    7     |              |  together   | being established  |
   |          |              | alternately |  with SCSI drives  |
   |----------+--------------+-------------+--------------------|
   | 2, 4, 6  | Unidentified |  Blinking   |   (3) Contact is   |
   |          |              |  together   | being established  |
   |          |              | alternately |  with SCSI 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.                                 |
   +------------------------------------------------------------+