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# 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: | |
+------------------------------------------------------------+
(IMG) IMG 1
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+