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Last update: 2 October 2007

Commodore PC-I Connectors
ConnectorTypeDescriptionNotes
J125 pin SUB-D femaleParallel portStandard PC Parallel port
J225 pin SUB-D maleSerial portPins 9 and 10 carry +12V and -12V supply voltages
J323 pin SUB-D femaleExternal Floppy Disk B:Amiga-compatible
J42x17 pin headerInternal Floppy Disk A:
J55 pin DIN with shieldKeyboard
J61x4 pin headerSpeaker
J71x3 pin headerPower LED
J89 pin SUB-D femaleMouseAmiga-compatible
J91x7 pin headerPower
J109 pin SUB-D femaleVideo RGB/MONO
J111x3 pin headerComposite Video
J122x30 cardedgePC connector

Pinout Connector J12
PinName
B1GND
B2RESETDRV
B3GND
B4IRQ2
B5GND
B6DRQ2
B7..B8GND
B9/IOCHK
B10GND
B11/BMEMW
B12/BMEMR
B13/BIOW
B14/BIOR
B15/BDACK3
B16DRQ3
B17/BDACK1
B18DRQ1
B19/BDACK0
B20BCLK (CPU CLOCK)
B21..B25IRQ7..IRQ3
B26/BDACK2
B27TC
B28BALE
B29GND
B30BOSC (14.318MHz)
A1..A8BD7..BD0
A9IOCHRDY
A10BAEN
A11..A30BA19..BA0

Copyright © 2007 Ronald van Dijk - All rights reserved
Source:
Commodore PC 1 Technical Manual 10/87 © Technische Schulung Commodore Deutschland