DATA TECHNOLOGY CORPORATION
===========================

   DTC51-2G

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 8-bit, ISA                             |
   |-------------------+----------------------------------------|
   | Size:             | Half-length, full-height card          |
   |-------------------+----------------------------------------|
   | Hard drive        | Up to seven SCSI devices               |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/C-D/20417-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                 Function                 |    Location     |
   |------------------------------------------+-----------------|
   | 50-pin SCSI connector - internal         |       J1        |
   |------------------------------------------+-----------------|
   | 26-pin SCSI connector - external         |       J2        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function             |   Location   | Setting  |
   |----------------------------------+--------------+----------|
   |>> | SCSI retries enabled         | SW1/jumper 2 |   open   |
   |---+------------------------------+--------------+----------|
   |   | SCSI retries disabled        | SW1/jumper 2 |  closed  |
   |---+------------------------------+--------------+----------|
   |>> | SCSI parity check enabled    | SW1/jumper 3 |  closed  |
   |---+------------------------------+--------------+----------|
   |   | SCSI parity check disabled   | SW1/jumper 3 |   open   |
   |---+------------------------------+--------------+----------|
   |>> | DMA Channel 1 enabled        | SW1/jumper 5 |  closed  |
   |---+------------------------------+--------------+----------|
   |   | DMA Channel 3 enabled        | SW1/jumper 5 |   open   |
   |---+------------------------------+--------------+----------|
   |>> | DMA enabled                  | SW1/jumper 6 |   open   |
   |---+------------------------------+--------------+----------|
   |   | DMA disabled                 | SW1/jumper 6 |  closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   I/O PORT ADDRESS - SW1                   |
   |------------------------------------------------------------|
   |     Address      |    SW1/jumper 7    |    SW1/jumper 8    |
   |------------------+--------------------+--------------------|
   |   |     320h     |       closed       |       closed       |
   |---+--------------+--------------------+--------------------|
   |>> |     330h     |       closed       |        open        |
   |---+--------------+--------------------+--------------------|
   |   |     340h     |        open        |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS ADDRESS - SW2                     |
   |------------------------------------------------------------|
   |Address |SW2/jumper 1|SW2/jumper 2|SW2/jumper 3|SW2/jumper 4|
   |--------+------------+------------+------------+------------|
   | |C000h |   closed   |   closed   |   closed   |   closed   |
   |-+------+------------+------------+------------+------------|
   | |C400h |   closed   |   closed   |   closed   |    open    |
   |-+------+------------+------------+------------+------------|
   | |C800h |   closed   |   closed   |    open    |   closed   |
   |-+------+------------+------------+------------+------------|
   | |CC00h |   closed   |   closed   |    open    |    open    |
   |-+------+------------+------------+------------+------------|
   | |D000h |   closed   |    open    |   closed   |   closed   |
   |-+------+------------+------------+------------+------------|
   | |D400h |   closed   |    open    |   closed   |    open    |
   |-+------+------------+------------+------------+------------|
   |>>|D800h |   closed   |    open    |    open    |   closed   |
   |-+------+------------+------------+------------+------------|
   | |DC00h |   closed   |    open    |    open    |    open    |
   |-+------+------------+------------+------------+------------|
   | |E000h |    open    |   closed   |   closed   |   closed   |
   |-+------+------------+------------+------------+------------|
   | |E400h |    open    |   closed   |   closed   |    open    |
   |-+------+------------+------------+------------+------------|
   | |E800h |    open    |   closed   |    open    |   closed   |
   |-+------+------------+------------+------------+------------|
   | |EC00h |    open    |   closed   |    open    |    open    |
   |-+------+------------+------------+------------+------------|
   | |F000h |    open    |    open    |   closed   |   closed   |
   |-+------+------------+------------+------------+------------|
   | |F400h |    open    |    open    |   closed   |    open    |
   |-+------+------------+------------+------------+------------|
   | |F800h |    open    |    open    |    open    |   closed   |
   |-+------+------------+------------+------------+------------|
   | |FC00h |    open    |    open    |    open    |    open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | Jumpers SW1/jumper 1, SW1/jumper 4, W2, and W2 are factory |
   | configured as follows:                                     |
   |                                                            |
   | SW1/jumper 1 - open, SW1/jumper 4 - closed, Jumper W1 -    |
   | closed, Jumper W2 - pins 2 & 3 closed. Do not alter these  |
   | settings.                                                  |
   +------------------------------------------------------------+