[sdiy] SID questions...

[Byron G. Jacquot]

>2. There are X and Y analog inputs, which measure RC constant and
>convert
>analog to digital for controllers. Now, I can't find info WHAT they do 
>control inside the sid? I thought to put two pots on front panel for
>real time editing, or some simple circuit that will convert CV to 
>some RC time constant (some OTA app?).

The converters aren't assigned to anything other than a couple of memory
locations.  I think they were connected to pins in the paddle-controllers on
the C64, used for game playing, not synthesis.

To make use of them controlling the synth, you'll have to read the values,
then turn them into useful numbers and write them back into the
corresponding SID control registers.

Byron Jacquot