Re: Hardware emulation of 6509 using 6502?

From: Mia Magnusson <mia_at_plea.se>
Date: Thu, 15 Mar 2018 22:26:18 +0100
Message-ID: <20180315222618.00005d05@plea.se>
Den Thu, 15 Mar 2018 21:50:02 +0100 skrev groepaz@gmx.net:
> Am Donnerstag, 15. März 2018, 21:03:37 CET schrieb
> silverdr@wfmh.org.pl:
> > VICE is a different thing, and as smf mentioned, a "100%" accurate
> > emulation of all the analogue idiosyncrasies of various
> > combinations of VIC/mainboard revisions is close to impossible.
> > What we talked about are the perceivable differences of the
> > hardware's output. The biggest one (we talk PAL) is between 6569R1
> > and the later revisions. The second biggest is between 6569R[2-4]
> > and 8565 (was it? I dislike this VIC so much that I am not even
> > sure if this is its proper number :-). The third is between the
> > 6569R5 and 8565. If I didn't mix things up and differences inherent
> > to various variants of the RF modulator aside.
> 
> its not that impossible really - its just that VICE implements all
> that stuff completely in software that runs on the CPU right now, and
> with that approach it would simply be way too slow. if try micro64,
> which implements this stuff in GPU shaders :)

Come on, it can't be any noticeable amount slower to let blue be blue
and not some terrible semi-magenta color :)

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Received on 2018-03-15 23:00:51

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