Commodore 128 Programmer's Reference Manual page 362

352 COMMODORE 128
PIN
1
2
3
4
5
6
7
8
TYPE
LUM/SYNC
GND
AUDIO OUT
VIDEO OUT
AUDIO IN
COLOR OUT
NC
NC
NOTE
Luminance/SYNC output
Composite signal output
Chroma signal output
No connection
No connection
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Run the three connecting wires inside the cable to attach to the audio in, audio out
and ground on the end of your component.
You can connect the C128 to your stereo system or VCR and channel sound
through your speakers. Be careful, however, not to exceed the standard electrical
restrictions. See the SID chip specs in Chapter 16 under the description EXT IN
(Pin 26).
Using the C128 in these ways opens your eyes to how flexible a personal computer
can be and how it can communicate with a wide range of devices in your home,
including your telephone (with an additional modem), VCR, stereo, TV—and don't
forget the electric guitar!
PROGRAMMING THE SID CHIP
IN MACHINE LANGUAGE
This section provides an algorithm and the coded program procedure to play music on
the C128.
First you need to know the key SID locations in the C128 memory map. Here's an
abbreviated SID memory map, which is exactly the same in both C128 and C64 modes.
Register 0 is located at address 54272 ($D400).
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