Theoretically, the SID handbook published by Commodore
should be enough to
recreate the SID.
Tell that to the fanboys. Because SID has some analogue components in it,
it is very difficult to duplicate the sound precisely. Some SID-philes
insist they can discern a difference not only between major versions (6581/2
and 8580) and minor revisions, but even individual chips.
There are some software libraries that closely emulate the SID, such as
Dag Lem's reSID, but making a perfect working modern form that everyone
agrees on has been a minor holy grail.
--
--------------------------------- personal:
http://www.armory.com/~spectre/ ---
Cameron Kaiser * Floodgap Systems *
www.floodgap.com * ckaiser at
floodgap.com
-- Dalai Lama to hotdog vendor: "Make me one with everything." ----------------