Commodore +4 User Port

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Available on Commodore +4 computer.

24 pin DZM 12 DREH Connector 24 pin DZM 12 DREH Connector at the Computer.

Pin Name Description
1 GND Ground
2 +5V +5 VDC
3 /BRESET ?
4 P2/CSE Data 2/Cassette Sense
5 P3 Data 3
6 P4 Data 4
7 P5 Data 5
8 RxC Receive Clock
9 ATN Attention?
10 +9V +9 VAC
11 +9V +9 VAC
12 GND Ground
A GND Ground
B P0 Data 0
C RxD Receive Data
D RTS Request to Send
E DTR Data Terminal Ready
F P7 Data 7
H DCD Data Carrier Detect
J P6 Data 6
K CTS Clear to Send
L DSR Data Set Ready
M TxD Transmit Data
N GND Ground

References

  • Commodore Manual

Category:Cartridges - Expansions Connectors

 

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