DATA TECHNOLOGY CORPORATION (DTC)
=================================

   DTC3180 (JUMPER VER.), DTC3280 (JUMPER VER.)

   +------------------------------------------------------------+
   +------------------------------------------------------------+

   Data bus: 16-bit, ISA.

   Size: Half-length, full-height card.

   Hard drives supported:  Up to seven SCSI devices

   Floppy drives supported: DTC3180A: None

   DTC3280A: Four 360KB, 720KB, 1.2MB or 1.44 MB drives

<gopher://bitreich.org/I/th99/c/C-D/20609-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                     | Location |
   |-------------------------------------------------+----------|
   | 50-pin SCSI connector-external                  |    J1    |
   |-------------------------------------------------+----------|
   | 50-pin SCSI connector-internal                  |    J2    |
   |-------------------------------------------------+----------|
   | 34-pin data cable connector-floppy drive        |    J3    |
   | (DTC3280A only)                                 |          |
   |-------------------------------------------------+----------|
   | 4-pin connector-drive active LED                |    J4    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            |   Location   |  Setting   |
   |--------------------------------+--------------+------------|
   |>> | Single-speed floppy        | W3/jumper 7  |    open    |
   |   | supported                  |              |            |
   |---+----------------------------+--------------+------------|
   |   | Dual-speed floppy          | W3/jumper 7  |   closed   |
   |   | supported                  |              |            |
   |---+----------------------------+--------------+------------|
   |>> | PS/2-type floppy on Drive  | W3/jumper 8  |   closed   |
   |   | Select 2 not supported     |              |            |
   |---+----------------------------+--------------+------------|
   |   | PS/2-type floppy drive on  | W3/jumper 8  |    open    |
   |   | Drive Select 2 supported   |              |            |
   |---+----------------------------+--------------+------------|
   |>> | Floppy drive precomp. is   | W3/jumper 9  |    open    |
   |   | scaled by data rate:       |              |            |
   |   |                            |              |            |
   |   | 500KHz=125ns,              |              |            |
   |   | 300KHz=208ns, 250KHz=250ns |              |            |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive               | W3/jumper 9  |   closed   |
   |   | precompensation is 125ns   |              |            |
   |---+----------------------------+--------------+------------|
   |>> | Floppy drive enabled       | W3/jumper 10 |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive disabled      | W3/jumper 10 |    open    |
   |---+----------------------------+--------------+------------|
   |>> | Factory configured - do    | W4/jumper 3  |    open    |
   |   | not alter                  |              |            |
   |---+----------------------------+--------------+------------|
   |>> | Factory configured - do    | W4/jumper 4  |    open    |
   |   | not alter                  |              |            |
   |---+----------------------------+--------------+------------|
   |>> | SCSI parity check enabled  | W4/jumper 5  |    open    |
   |---+----------------------------+--------------+------------|
   |   | SCSI parity check disabled | W4/jumper 5  |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | 2KB SRAM selected          |      W1      | pins 2 & 3 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | 8KB SRAM selected          |      W1      | pins 1 & 2 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Floppy drive address       |      W2      | pins 1 & 2 |
   |   | 3F2-3F7h                   |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive address       |      W2      | pins 2 & 3 |
   |   | 372-377h                   |              |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     INTERRUPT REQUEST                      |
   |------------------------------------------------------------|
   |       IRQ        |    W4/jumper 1     |    W4/jumper 2     |
   |------------------+--------------------+--------------------|
   |>> |    IRQ11     |        open        |       closed       |
   |---+--------------+--------------------+--------------------|
   |   |    IRQ12     |       closed       |        open        |
   |---+--------------+--------------------+--------------------|
   |   |    IRQ10     |       closed       |       closed       |
   |---+--------------+--------------------+--------------------|
   |   |    IRQ15     |        open        |        open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           INQUIRY INTERRUPT REQUEST "B " OPTIONS           |
   |------------------------------------------------------------|
   |    IRQ    |W3/jumper 1 |W3/jumper 2|W3/jumper 3|W3/jumper 4|
   |-----------+------------+-----------+-----------+-----------|
   |>>|  IRQ11  |    open    |   open    |  closed   |   open    |
   |-+---------+------------+-----------+-----------+-----------|
   | |  IRQ10  |    open    |   open    |   open    |  closed   |
   |-+---------+------------+-----------+-----------+-----------|
   | |  IRQ12  |    open    |  closed   |   open    |   open    |
   |-+---------+------------+-----------+-----------+-----------|
   | |  IRQ15  |   closed   |   open    |   open    |   open    |
   |-+---------+------------+-----------+-----------+-----------|
   | |Disabled |    open    |   open    |   open    |   open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |     Address      |    W3/jumper 5     |    W3/jumper 6     |
   |------------------+--------------------+--------------------|
   |>> |    D800h     |        open        |        open        |
   |---+--------------+--------------------+--------------------|
   |   |    C800h     |        open        |       closed       |
   |---+--------------+--------------------+--------------------|
   |   |    DC00h     |       closed       |        open        |
   |---+--------------+--------------------+--------------------|
   |   |    CC00h     |       closed       |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        SCSI ADDRESS                        |
   |------------------------------------------------------------|
   |  SCSI ID   |  W4/jumper 6  |  W4/jumper 7  |  W4/jumper 8  |
   |------------+---------------+---------------+---------------|
   |    |   0   |    closed     |    closed     |    closed     |
   |----+-------+---------------+---------------+---------------|
   |    |   1   |     open      |    closed     |    closed     |
   |----+-------+---------------+---------------+---------------|
   |    |   2   |    closed     |     open      |    closed     |
   |----+-------+---------------+---------------+---------------|
   |    |   3   |     open      |     open      |    closed     |
   |----+-------+---------------+---------------+---------------|
   |    |   4   |    closed     |    closed     |     open      |
   |----+-------+---------------+---------------+---------------|
   |    |   5   |     open      |    closed     |     open      |
   |----+-------+---------------+---------------+---------------|
   |    |   6   |    closed     |     open      |     open      |
   |----+-------+---------------+---------------+---------------|
   |>>  |   7   |     open      |     open      |     open      |
   +------------------------------------------------------------+