Cable NullModem Macintosh/PC


Source: Roy Wood

This cable allows you to connect a Macintosh to a PC through the serial port.
"It worked perfectly, allowing me to do PPP and regular serial connections from the mac to the PC (which happened to be running Linux)."

8 Pin DIN Male Macintosh connectorConnecteur 8 points DIN Male Macintosh brancher au Mac.

25 PIN D-SUB FemaleConnecteur 25 points D-SUB Femelle brancher au port serie du PC.

9 PIN D-SUB FemaleConnecteur 9 points D-SUB Femelle brancher au port serie du PC.

Macintosh Signal DescriptionMac DIN 8 MalePC DB 25 FemalePC DB 9 Female
HSKo (Output Handshake)1 (OUT)5, 6, 8 (CTS, DSR, DCD)8, 6, 1 (CTS, DSR, DCD)
HSKi (Input Handshake)2 (IN)4 (RTS)7 (RTS)
TxD- (Transmit Data -)3 (OUT)3 (RxD)2 (RxD)
GND (Signal Ground)4 (GND)7 (GND)5 (GND)
RxD- (Receive Data -)5 (IN)2 (TxD)3 (TxD)
TxD+ (Transmit Data +)6 (OUT)--
GPi (General Purpose Input)7 (IN)20 (DTR)4 (DTR)
RxD+ (Receive Data +)8 (IN, GND = RS232 Mode)7 (GND)5 (GND)