furnace/doc/7-systems/pet.md
2023-09-10 19:34:13 -05:00

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# Commodore PET
a computer from 1977 which was leader on US schools back then. subsequently the Apple II took its throne.
maybe no better than a computer terminal, but somebody discovered a way to update the screen at turbo rate - and eventually its sound "chip" (it was nothing more than an 8-bit shift register) was abused as well.
some of these didn't even have sound...
## effects
- `10xx`: **set waveform.**
- `xx` is a bitmask.
## info
this chip uses the [PET](../4-instrument/pet.md) instrument editor.