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

   DTC5287

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

   Data bus: 16-bit, ISA

   Size: Full-length, full-height card

   Hard drives supported:  Two RLL ST506 drives

   Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB

   Sector interleave: 2:1

<gopher://bitreich.org/I/th99/c/C-D/20072-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                     | Location |
   |-------------------------------------------------+----------|
   | 34-pin data cable connector-floppy drive        |    J1    |
   |-------------------------------------------------+----------|
   | 34-pin control cable connector-hard drive       |    J2    |
   |-------------------------------------------------+----------|
   | 20-pin data cable connector-drive 0             |    J3    |
   |-------------------------------------------------+----------|
   | 20-pin data cable connector-drive 1             |    J4    |
   |-------------------------------------------------+----------|
   | 4-pin connector-drive active LED                |    J5    |
   |-------------------------------------------------+----------|
   | DB-37 control cable connector-external floppy   |    J6    |
   | drive                                           |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | BIOS address is C800h          |    W2    |    open    |
   |---+--------------------------------+----------+------------|
   |   | BIOS address is D800h          |    W2    |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | BIOS enabled                   |    W3    |   closed   |
   |---+--------------------------------+----------+------------|
   |   | BIOS disabled                  |    W3    |    open    |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |    W5    |   closed   |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |    W6    | pins 2 & 3 |
   |   | alter                          |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | BIOS ROM chip is 2764          |    W7    |    open    |
   |---+--------------------------------+----------+------------|
   |   | BIOS ROM chip is 27128         |    W7    |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  HARD DRIVE PORT ADDRESS                   |
   |------------------------------------------------------------|
   |                 Address                 |   W1    |   W4   |
   |-----------------------------------------+---------+--------|
   |>> | Port addresses are 1F0-1F7 3F2-3F7h |  open   |  open  |
   |---+-------------------------------------+---------+--------|
   |   | Port addresses are 170-177 372-377h | closed  | closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |  This controller has a built-in low-level format program.  |
   |  To enter the program run the DEBUG utility supplied with  |
   |           DOS and at the prompt enter G=C800:5.x           |
   +------------------------------------------------------------+