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

   DTC5250CX

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:     | 8-bit, ISA                                 |
   |---------------+--------------------------------------------|
   | Size:         | Full-length, full-height card              |
   |---------------+--------------------------------------------|
   | Hard drive    | Two MFM ST506/412 drives                   |
   | supported:    |                                            |
   |---------------+--------------------------------------------|
   | Floppy drives | Four 360KB, 720KB, 1.2MB, or 1.44MB drives |
   | supported:    |                                            |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/C-D/20452-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                    | Location  |
   |------------------------------------------------+-----------|
   | 34-pin control 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     |
   |------------------------------------------------+-----------|
   | 34-pin floppy drive cable connector - external |    J5     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              |  Location   | Setting |
   |------------------------------------+-------------+---------|
   |>> | Floppy drive enabled           | J6/jumper 3 |  open   |
   |---+--------------------------------+-------------+---------|
   |   | Floppy drive disabled          | J6/jumper 3 | closed  |
   |---+--------------------------------+-------------+---------|
   |>> | Floppy drive B: 96 tracks per  | J6/jumper 6 | closed  |
   |   | inch density enabled           |             |         |
   |---+--------------------------------+-------------+---------|
   |   | Floppy drive B: 48 tracks per  | J6/jumper 6 |  open   |
   |   | inch density enabled           |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | Floppy drive A: 96 tracks per  | J6/jumper 7 | closed  |
   |   | inch density enabled           |             |         |
   |---+--------------------------------+-------------+---------|
   |   | Floppy drive A: 48 tracks per  | J6/jumper 7 |  open   |
   |   | inch density enabled           |             |         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              |   Location   | Setting |
   |-----------------------------------+--------------+---------|
   |>> | Floppy drive port address is  | SW2/switch 1 |   off   |
   |   | 3F0-3F7h                      |              |         |
   |---+-------------------------------+--------------+---------|
   |   | Floppy drive port address is  | SW2/switch 1 |   on    |
   |   | 370-377h                      |              |         |
   |---+-------------------------------+--------------+---------|
   |>> | BIOS enabled                  | SW2/switch 3 |   on    |
   |---+-------------------------------+--------------+---------|
   |   | BIOS disabled                 | SW2/switch 3 |   off   |
   |---+-------------------------------+--------------+---------|
   |>> | BIOS size 16KB                | SW2/switch 4 |   on    |
   |---+-------------------------------+--------------+---------|
   |   | BIOS size 8KB                 | SW2/switch 4 |   off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           DRIVE TYPE SETTINGS - SW1/SWITCHES 1-8           |
   |------------------------------------------------------------|
   |    For settings of SW1 see drive type settings table in    |
   |                       document C0061                       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |Address |SW2/switch 5|SW2/switch 6|SW2/switch 7|SW2/switch 8|
   |--------+------------+------------+------------+------------|
   |>>|C800h |     on     |    off     |     on     |     on     |
   |-+------+------------+------------+------------+------------|
   | |D800h |     on     |    off     |    off     |     on     |
   |-+------+------------+------------+------------+------------|
   | |E800h |     on     |    off     |     on     |    off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |  SW2/switch 2 is not used. If QIT01B1 EPROM is installed,  |
   | jumper W1 must be closed, jumpers W2 and W3 must be open.  |
   |     The functions of J6/jumpers 1, 2, 4, 5, and 8 are      |
   |                       undocumented.                        |
   +------------------------------------------------------------+