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Mac to C64 Nullmodem

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8 PIN MINI-DIN MALE to the Macintosh.

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DZM 12 DREH to the C64 UserPort.

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)

Note: Larry Anderson suggested that RXD- should not be connected. However earlier information indicated that it should be connected. Please inform us if the above connection is sufficient.

GND+RXD- 4+5 1+12+A+N GND

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