Information about cable, connector or adapter : C64 RS232 User Port  

 C64 RS232 User Port
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 Category :   All cables and connectors > Connectors > Computer > Video >
 Added to database : 2005-12-20 11:39:32

 Description : Available on the Commodore C64/C128. Software emulated. The signals does not have true RS232 levels. It's TTL level, and RXD/TXD is inverted. It's just the normal User Port, used as a RS232 port.

 Pinout : 0

AGNDProtective Ground
B+CFLAG2+PB0Receive Data (Must be applied to both pins!)
DPB1Ready To Send
EPB2Data Terminal Ready
FPB3Ring Indicator
HPB4Data Carrier Detect
KPB6Clear To Send
LPB7Data Set Ready
MPA2Transmit Data
NGNDSignal Ground

 Note : C64 RS232 User Port