Commodore 128 Programmer's Reference Manual page 648

638 COMMODORE 128
THE VIDEO INTERFACE
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The C128 VIC video interface hardware allows the connection of a standard NTSC or (J
PAL commercial television and/or a color monitor. The monitor can accept either a
composite video signal or separate chroma and luminance/sync signals in addition to an •
audio signal. This output is very similar to the output in later revision C64 units. (
The C128 also provides 80-column video interfacing. The available 80-column
display is RGBI and monochrome, able to interface to most NTSC- or PAL-compatible
RGBI TYPE I monitors and most 80-column-compatible NTSC or PAL monochrome j j
monitors. '-J
THE VIC VIDEO INTERFACE [\
The following items specify the VIC video interface for 40-column display in sixteen
colors. The VIC signal is available at analog levels at the video connector and at RF j I
levels at the RF output. LJ
MODULATOR SPECIFICATION
The modulator provides a broadcast-type RF signal carrying the VIC composite video
and audio signals. The NTSC modulator is switchable between channels 3 and 4 to help
minimize local broadcast interference. The signal generated by the RF modulator
complies with the FCC ruling concerning FCC Class B, TV interface devices. The RF \ (
output is accessible via a standard RCA-type phono/video jack. LJ
MONITOR OUTPUT
The VIC video output provides the signals shown in Table 16-22.
SIGNAL LEVEL IMPEDENCE DC OFFSET
Luminance/Sync 1V p-p 75 0 0.5 V
Chroma 1V p-p 75 0 0.5 V
Composite lVp-p 75 0 0.5 V
Audio lVp-p 1K0
Table 16-22. VIC Video Output Signals
VIDEO CONNECTOR PINOUT
The VIC video connector exists physically as an eight-pin DIN connector. It provides
the signals shown in Table 16-23.
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