Commodore 128 Programmer's Reference Manual page 666

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656
COMMODORE 128
9. Channel Selector—Use this switch to select which TV channel (L = channel 3, H
U
= channel 4) the computer's picture will be displayed on when using a television
instead of a monitor.
| I
10. RF Connector—This connector supplies both picture and sound to your television
\J
set. (A television can display only a 40-column picture.)
11.
RGBI Connector—This 9-pin connector supplies direct audio and an RGBI (Red/
,
Green/ Blue/Intensity) signal. This is the 80-column output.
)
PIN
1
2
3
4
5
6
7
8
9
SIGNAL
Ground
Ground
Red
Green
Blue
Intensity
Monochrome
Horizontal Sync
Vertical Sync
u
RGBI CONNECTOR
U
u
u
12.
User Port—Various interface devices can be attached here, including a Commo
dore modem.
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Li
U

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