Changes
PSG
,/* Clock Frequency */
The Programmable Sound Generator (PSG) of the CPC is an AY-3-8912 chip. It is able to output three separate sound channels (named Channel A, B and C). Each channel can be used to output tones and/or white noise.
== Clock Frequency Schematics ==
The PSG is driven by an external clock at 1MHz provided by the [[Gate Array]]. The AY chip has an internal clock divider by 8 which means that it works internally at 125KHz, outputting 125,000 samples per second for each channel. The BC1 and A8 pins are always equal to 1 as they are connected to +5V.
== PSG Registers ==
