| Pinout for:C64 RS232 User Port | | All cables and connectors Connectors Computer Video
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 :
| Pin | Name | Description | | A | GND | Protective Ground | | B+C | FLAG2+PB0 | Receive Data (Must be applied to both pins!) | | D | PB1 | Ready To Send | | E | PB2 | Data Terminal Ready | | F | PB3 | Ring Indicator | | H | PB4 | Data Carrier Detect | | K | PB6 | Clear To Send | | L | PB7 | Data Set Ready | | M | PA2 | Transmit Data | | N | GND | Signal Ground |
Note : C64 RS232 User Port |