12 Jan
2012
12 Jan
'12
8:56 p.m.
On Thu, Jan 12, 2012 at 3:01 PM, Dave McGuire <mcguire at neurotica.com> wrote:
On 01/12/2012 01:11 AM, Lance Lyon wrote:
Ultimately, I'm sure that's the cause. I don't think the intention
was to "downgrade" the SID, but fanatical coders found ways to abuse
the audio filters in ways that were not foreseen by the designers (and
in ways that were not documented, nor guaranteed to work), so the
effect was that some of the more interesting and creative effects that
were developed on the 6581 (original) SID didn't work on the 8580
(later) SID.
As I understand it, the most visible impact was on 4-bit digitized
sound playback (as seen in "Impossible Mission"), but there were other
"features" that were left behind in the redesign/remask.
-ethan
Major difference is with the SID chip - the new
SIDs aren't as good as the
older ones (sound-wise).
?I wonder why they downgraded the SID chip. ?Cost reasons?