On Mon, 6 Jul 1998, The Adept wrote:
The C64C utilized a reduced chip design, replaced the
MOS6510 with
an MOS8510 and SID was changed but not for the better (could only do
3 voices instead of 4, don't remember if it was the white noise
channel that was dropped) and the VIC-II also received a new
chip revision.
I don't think any voices were dropped from the SID, it always had three
music voices plus white noise. The problem was that Commodore 'fixed' a
'bug' (aka feature) in the SID chip. This 'bug' had been used to play
digitized sound samples.
IIRC.
Dan
Doug Spence
ds_spenc(a)alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/