14 Jan
2012
14 Jan
'12
2:10 a.m.
On Jan 13, 2012, at 7:24 PM, Dave McGuire wrote:
Yes, actually. They're looking to do a simulation like the visual 6502 (at
visual6502.org), which should present some interesting challenges (the analog portion will
probably be a lot harder to simulate).
Someone may be intending to make new hardware, as well; there are quite a few hardware SID
synths (HardSID, for example) that make use of actual pulls or NOS, but both pulls and NOS
are getting quite hard to come by now (especially of the 6581). Sounds like an
interesting project to me; I think intentionally making a crappy filter is better left to
discrete transistors than an IC.
- Dave
And lots of
cool die shots of various revisions here:
http://oms.wmhost.com/misc/
Good heavens. Are those guys reverse-engineering the whole chip?? Some amazing shots
there, and interesting documentation!