Changes
PSG
,/* PSG Registers */
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== PSG Registers I/O Access ==
The PSG has 16 read/writeable data registers, and a write-only index register. Only the 4 least significant bits of the selected register number are considered.
Consult this article for more information: [[How to access the PSG via PPI]]
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== PSG Registers ==
===00h - Channel A Tone Frequency Low (8bit)===
