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DevelopmentSega Master System / Mark III / Game Gear |
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Game Gear Stereo
Game Gear stereo extension
When a byte is written to port 0x06 on the Game Gear, the PSG output is affected as follows:
| Bit | Channel | Side |
|---|---|---|
| 0 | 0 | Right |
| 1 | 1 | Right |
| 2 | 2 | Right |
| 3 | 3 | Right |
| 4 | 0 | Left |
| 5 | 1 | Left |
| 6 | 2 | Left |
| 7 | 3 | Left |
If a bit is set, the corresponding channel is output to the
corresponding side. So, 0xff outputs all channels to all sides, 0xf0
outputs to the left side only, etc.
Note however that this only affects the headphone output. The built-in speaker is unaffected; this means that
- One-sided sounds will be relatively louder on the speaker than on headphones
- If a channel is set to mute both sides, this has no effect on the speaker. Thus, don't use this to mute the sound.
