Apple IIc Plus Disk Drive Port - DB 19 Pin connector
19 pin D-SUB female connector at the
computer.
19 pin D-SUB male connector at the
cable.
| Pin | Signal | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | GND | Ground |
| 3 | GND | Ground |
| 4 | 3.5DISK | 3.5 or 5.25-inch drive select. |
| 5 | -12V | -12 volt supply. |
| 6 | +5V | +5 volt supply. |
| 7 | +12V | +12 volt supply. |
| 8 | +12V | +12 volt supply. |
| 9 | DR2 | Drive 2 Select. |
| 10 | WRPTOTECT | Write protect input. |
| 11 | PHASE0 | Motor Phase 0 output. |
| 12 | PHASE1 | Motor Phase 1 output. |
| 13 | PHASE2 | Motor Phase 2 output. |
| 14 | PHASE3 | Motor Phase 3 output. |
| 15 | WREQ | Write request. |
| 16 | HDSEL | Head Select. |
| 17 | DR1 | Drive 1 select. |
| 18 | RDDATA | Read data input. |
| 19 | WDATA | Write data output. |
Notes
- Power connectors on this port are for use by the disk drive only.