14 Jan
2012
14 Jan
'12
6:24 a.m.
On 01/13/2012 09:10 PM, David Riley 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.
Yes. Wow, this is awesome work that they're doing.
One of the things I always ran into about the Commie vs. Atari camps
was the C64's crap graphics but great sound, and the Atari's far
superior graphics but comparatively primitive sound. It looks like the
C64's sound has a huge following at the "guts" level. This is really cool.
-Dave
--
Dave McGuire
New Kensington, PA
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!