Apple IIc: Video Port Pin-Out

This port requires an external PAL modulator to connect to a TV set. It is NOT an RGB port, to connect to an RGB monitor an external piece of hardware is required.
This article has been archived and is no longer updated by Apple.
Port Pinouts:
15 Pin Connector
Signal
Description
1
TEXT
Video text signal from GLU
2
14M
14MHz Timing signal from master oscillator
3
SYNC
Display synchronisation signal from IOU pin 39
4
SEGB
Display Vertical counter bit from IOU pin 4
5
1VSOUND
1v sound signal
6
LDPS
Video shift Register load enable
7
WNDW
Active area display blanking
8
+12v
Regulated +12v
9
PRAS
Ram row address strobe
10
GR
Graphics mode enable
11
SEROUT
Serialized character generator output
12
NTSC
Composite NTSC video signal
13
GND
Ground
14
VIDD7
Causes half dot shift if high
15
CREF
Colour reference signal
Published Date: Feb 19, 2012