(To C64).
(To PC).
DZM 12 DREH to the C64 UserPort.
25 PIN D-SUB MALE to the PC
| C64 | Dir | PC | ||
|---|---|---|---|---|
| GND | A | 25 | GND | |
| PB0 | C | 10 | /ACK | |
| PB1 | D | 11 | BUSY | |
| PB2 | E | 12 | PE | |
| PB3 | F | 5 | D3 | |
| PB4 | H | 6 | D4 | |
| PB5 | J | 7 | D5 | |
| PB6 | K | 8 | D6 | |
| PB7 | L | 9 | D7 | 
Contributor: Joakim Ögren
  Source:
  64NET v1.82.58 documentation by Paul Gardner-Stephen
  Copyright © The Hardware Book Team 1996-2001.
  May be copied and redistributed, partially or in whole, as appropriate.
 Document last modified: 2001-06-07