Mac to C64 Nullmodem Cable Pinout -
Mac C64
GND+RXD- 4+5 1+12+A+N GND
RXD+ 8 M TXD (PA2)
TXD+ 6 B+C RXD (FLAG2+PB0)
D+E RTS+DTR (PB1+PB2)

8 pin mini-DIN male connector layout 24 pin DZM 12 DREH connector diagram

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