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== Pinout ==

Available on Commodore [[C16]], [[C116]] and [[Plus4|+4]] computers.

[[Image:unknown.png]]

50 PIN FEMALE EDGE (2 mm pitch) at the Computer.

{| {{border}}
! Pin !! Name   !! Description
|-
| 1   || GND    || Ground
|-
| 2   || +5V    || +5 VDC
|-
| 3   || +5V    || +5 VDC
|-
| 4   || /IRQ   || Interrupt
|-
| 5   || R/W    || Read/Write (1=Read, 0=Write)
|-
| 6   || C1HIGH || External Cartridge Chip Selects C1 High
|-
| 7   || C2LOW  || External Cartridge Chip Selects C2 Low (reserved)
|-
| 8   || C2HIGH || External Cartridge Chip Selects C2 High (reserved)
|-
| 9   || /CS1   || Chip Select Line 1
|-
| 10  || /CS0   || Chip Select Line 0
|-
| 11  || /CAS   || Column Address Strobe
|-
| 12  || MUX    || DRAM address multiplex control signal
|-
| 13  || BA     || Bus Available (Low=DMA)
|-
| 14  || D7     || Data 7
|-
| 15  || D6     || Data 6
|-
| 16  || D5     || Data 5
|-
| 17  || D4     || Data 4
|-
| 18  || D3     || Data 3
|-
| 19  || D2     || Data 2
|-
| 20  || D1     || Data 1
|-
| 21  || D0     || Data 0
|-
| 22  || AEC    || Address Enable Code
|-
| 23  || EAI    || External Audio In
|-
| 24  || PHI 2  || Artificial Phi 2 signal
|-
| 25  || GND    || Ground
|-
| A   || GND    || Ground
|-
| B   || C1LOW  || External Cartridge Chip Selects C1 Low
|-
| C   || /RESET || Reset
|-
| D   || /RAS   || Row Address Strobe
|-
| E   || PHI 0  || Artificial Phi 0 Signal
|-
| F   || A15    || Address 15
|-
| H   || A14    || Address 14
|-
| J   || A13    || Address 13
|-
| K   || A12    || Address 12
|-
| L   || A11    || Address 11
|-
| M   || A10    || Address 10
|-
| N   || A9     || Address 9
|-
| P   || A8     || Address 8
|-
| R   || A7     || Address 7
|-
| S   || A6     || Address 6
|-
| T   || A5     || Address 5
|-
| U   || A4     || Address 4
|-
| V   || A3     || Address 3
|-
| W   || A2     || Address 2
|-
| X   || A1     || Address 1
|-
| Y   || A0     || Address 0
|-
| Z   || n/c    || Not connected
|-
| AA  || n/c    || Not connected
|-
| BB  || n/c    || Not connected
|-
| CC  || GND    || Ground
|}

PHI 2: Address valid on the rising edge, data valid on the
falling edge

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

== Sources ==
* Usenet posting in comp.sys.cbm, Pinout specs for cbm machines needed by [mailto:lmcclure@delphi.com Lonnie McClure]
* SAMS Computerfacts CC8 Commodore 16
* Article in C'T September 1986

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