(TXT) View Source
       
       # COGENT DATA TECHNOLOGIES, INC.
       
          DISKMASTER
       
          +------------------------------------------------------------+
          +------------------------------------------------------------+
       
          Data bus: 16-bit, ISA
       
          Size: Full-length, full-height card
       
          Hard drives supported:  Two RLL ST506/412 and two ESDI drives,
          or
       
          four ESDI drives may be daisy-chained off of CN2
       
          Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                    Function                     | Location |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector-ST506 hard       |   CN1    |
          | drives                                          |          |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector-ESDI hard drives |   CN2    |
          |-------------------------------------------------+----------|
          | 34-pin data cable connector-floppy drive        |   CN3    |
          |-------------------------------------------------+----------|
          | 20-pin data cable connector-drive 1             |   CN4    |
          |-------------------------------------------------+----------|
          | 20-pin data cable connector-drive 2             |   CN5    |
          |-------------------------------------------------+----------|
          | 20-pin data cable connector-drive 3             |   CN6    |
          |-------------------------------------------------+----------|
          | 20-pin data cable connector-drive 4             |   CN7    |
          |-------------------------------------------------+----------|
          | 6-pin EACK connector - (For use with an         |   CN9    |
          | E/MASTER Ethernet board)                        |          |
          |-------------------------------------------------+----------|
          | 6-pin ERQ connector - (For use with an E/MASTER |   CN10   |
          | Ethernet board)                                 |          |
          |-------------------------------------------------+----------|
          | 4-pin connector-drive active LED                |   CN31   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Function            | Location |    Setting     |
          |--------------------------------+----------+----------------|
          | » | No DMA expansion           |   JP4    |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Supports E/Master ethernet |   JP4    |      open      |
          |---+----------------------------+----------+----------------|
          | » | Drive 4 is an ST506        |   JP5*   |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Drive 4 is an ESDI         |   JP5*   |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | Drive 3 is an ST506        |   JP6*   |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Drive 3 is an ESDI         |   JP6*   |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | Drive 2 is an ESDI         |   JP7*   |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Drive 2 is an ST506        |   JP7*   |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | Drive 1 is an ESDI         |   JP8*   |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Drive 1 is an ST506        |   JP8*   |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | Floppy drive enabled       |   JP36   |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Floppy drive disabled      |   JP36   |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | Reserved for future use    | JP37-39  |      open      |
          |------------------------------------------------------------|
          | Note:* Both pin sets must be set alike                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CONTROLLER CLOCK CONFIGURATION               |
          |------------------------------------------------------------|
          |             Function             |    JP40    |    JP41    |
          |----------------------------------+------------+------------|
          | » | Set at 10MHz                 | pins 2 & 3 | pins 1 & 2 |
          |   |                              |   closed   |   closed   |
          |---+------------------------------+------------+------------|
          |   | Disabled, bus clock timing   | pins 1 & 2 | pins 2 & 3 |
          |   | enabled                      |   closed   |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        DMA CHANNEL                         |
          |------------------------------------------------------------|
          |   DRQ    |      JP1 &      |     JP1 &     |     JP1 &     |
          |          |  JP2/jumper 1   | JP2/jumper 2  | JP2/jumper 3  |
          |----------+-----------------+---------------+---------------|
          |   | DRQ5 |     closed      |     open      |     open      |
          |---+------+-----------------+---------------+---------------|
          | » | DRQ6 |      open       |    closed     |     open      |
          |---+------+-----------------+---------------+---------------|
          |   | DRQ7 |      open       |     open      |    closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  INTERRUPT REQUEST - JP3                   |
          |------------------------------------------------------------|
          |# |Jumper 1|Jumper 2|Jumper |Jumper |Jumper |Jumper |Jumper |
          |  |        |        |   3   |   4   |   5   |   6   |   7   |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |3 | closed |  open  | open  | open  | open  | open  | open  |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |5 |  open  | closed | open  | open  | open  | open  | open  |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |9 |  open  |  open  |closed | open  | open  | open  | open  |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |10|  open  |  open  | open  |closed | open  | open  | open  |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |12|  open  |  open  | open  | open  |closed | open  | open  |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |14|  open  |  open  | open  | open  | open  |closed | open  |
          |--+--------+--------+-------+-------+-------+-------+-------|
          |15|  open  |  open  | open  | open  | open  | open  |closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        BIOS ADDRESS                        |
          |------------------------------------------------------------|
          |ADDRESS|BINARY | JP18  | JP17  | JP16  | JP15 | JP14 | JP13 |
          |-------+-------+-------+-------+-------+------+------+------|
          | C8000 |1100100| Pins  | Pins  | Pins  | Pins | Pins | Pins |
          |       |       |  1-2  |  2-3  |  2-3  | 1-2  | 2-3  | 2-4  |
          |------------------------------------------------------------|
          |Note:Pins designated should be in the closed position.      |
          +------------------------------------------------------------+
       
 (IMG) IMG 2
          
       
               Binary one          Binary zero          Binary zero      
                                                                         
             PROM size 8KB        PROM size 8KB        PROM size 16KB    
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          |   The BIOS address settings range is C800 - E000 and is    |
          |   selected with JP12-19 using a binary translation. JP12   |
          | (LSB) and JP19 (MSB) are internal and assumed to be 0 and  |
          |  1 respectively. JP13 - JP18 are set: pins 1-2 closed= 1;  |
          |           pins 2-3 closed= 0. Default is C8000:            |
          |                                                            |
          |    In addition to serving as the 2 1 place in the BIOS     |
          |   address selection, JP13 is also used to determine PROM   |
          |    size (8KB or 16KB). Due to the pin assignment a PROM    |
          | cannot have an address with a 1 in the 2 1 place (such as  |
          |            110001 1 0) and be 16KB (see above).            |
          +------------------------------------------------------------+