DTC5280I, DTC7280 Hard Disk/Floppy Controller Settings and Configuration
DATA TECHNOLOGY CORPORATION
DTC5280I, DTC7280
Data bus: 16-bit, ISA
Size: Full-length, full-height card
Hard drives supported: Two MFM ST506/412 drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
Interface: DTC5280i: 2:1
DTC7280: 1:1
CONNECTIONS | |
Function | Location |
34-pin control cable connector-floppy drive | J1 |
34-pin data cable connector-hard drive | J2 |
20-pin data cable connector-drive 0 | J3 |
20-pin data cable connector-drive 1 | J4 |
5-pin connector-drive active LED | J5 |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | Initial floppy data transfer rate is 500KHz | W4 | open |
Initial floppy data transfer rate is 250KHz | W4 | closed | |
| » | Hardware drive select mode enabled | W5 | closed |
Firmware drive select mode enabled | W5 | open | |
| » | Auto-deselect enabled | W6 | closed |
Auto-deselect disabled | W6 | open | |
| » | Floppy drive precompensation is scaled by data rate:
500KHz=125ns, 300KHz=208ns, 250KHz=250ns | W7 | open |
Floppy drive precompensation is 125ns | W7 | closed | |
HARD DRIVE PORT ADDRESS | |||
Address | W2 | W3 | |
| » | Port addresses are 1F0-1F7 3F03F7h | open | open |
Port addresses are 170-177 370377h | closed | closed | |
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