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== Pinout ==

Available on Commodore [[Plus4|+4]] computer.

[[Image:dzm12dreh.png]]

24 PIN EDGE CONNECTOR MALE at the computer. Pitch 4 mm (.156").

{| {{border}}
! 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   || P1      || Data 1 *)
|-
| L   || DSR     || Data Set Ready
|-
| M   || TxD     || Transmit Data
|-
| N   || GND     || Ground
|}

*) 8551 CTS line is shorted to ground.

== Contributions ==
* [[User:Joakim|Joakim Ögren]]
* [mailto:arwin@xs4all.nl Arwin Vosselman]

== Sources ==
* Usenet posting in comp.sys.cbm, [https://groups.google.com/forum/#!searchin/comp.sys.cbm/$20Pinout$20specs$20for$20cbm$20machines$20needed$20Lonnie$20McClure Pinout specs for cbm machines needed] by [mailto:lmcclure@delphi.com Lonnie McClure]
* SAMS Computerfacts CC8 Commodore 16

[[Category:Connector]]
[[Category:Expansion]]