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# DATA TECHNOLOGY CORPORATION
DTC5287CR, DTC5287I, DTC7287
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 16-bit, ISA
Size: Full-length, full-height card
Hard drives supported: Two RLL ST506/412 drives with 17,32,
or 60 sector mapping
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
Sector interleave: DTC5287CR: 1:1
DTC5287i: 2:1
DTC7287: 1:1
(IMG) IMG 1
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | Floppy drive data transfer rate | W4 | open |
| | is 500KHz | | |
|---+-----------------------------------+----------+---------|
| | Floppy drive data transfer rate | W4 | closed |
| | is 250KHz | | |
|---+-----------------------------------+----------+---------|
| » | Hardware drive select mode | W5 | closed |
| | | | |
| | (drive number is driven directly | | |
| | to the interface) | | |
|---+-----------------------------------+----------+---------|
| | Firmware drive select mode | W5 | open |
| | | | |
| | (drive number is intercepted by | | |
| | controller firmware) | | |
|---+-----------------------------------+----------+---------|
| » | Auto-deselect enabled | W6 | closed |
|---+-----------------------------------+----------+---------|
| | Auto-deselect disabled | W6 | open |
|---+-----------------------------------+----------+---------|
| » | Floppy drive precompensation | W7 | open |
| | scaled by data rate: | | |
| | | | |
| | 500KHz=125ns, 300KHz=208ns, | | |
| | 250KHz=250ns | | |
|---+-----------------------------------+----------+---------|
| | Floppy drive precompensation is | W7 | closed |
| | 125ns | | |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | W8 | closed |
|---+-----------------------------------+----------+---------|
| » | BIOS address is C800h | W9 | open |
|---+-----------------------------------+----------+---------|
| | BIOS address is D800h | W9 | closed |
|---+-----------------------------------+----------+---------|
| » | BIOS enabled | W10 | closed |
|---+-----------------------------------+----------+---------|
| | BIOS disabled | W10 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HARD DRIVE PORT ADDRESS |
|------------------------------------------------------------|
| Address | W2 | W3 |
|-----------------------------------------+---------+--------|
| » | Port addresses are 1F0-1F7 3F2-3F7h | open | open |
|---+-------------------------------------+---------+--------|
| | Port addresses are 170-177 372-377h | closed | closed |
+------------------------------------------------------------+