Re: Hardware emulation of 6509 using 6502?

From: groepaz_at_gmx.net
Date: Thu, 15 Mar 2018 23:00:01 +0100
Message-ID: <2584828.T5Fc4F4ISZ@rakete>
Am Donnerstag, 15. März 2018, 22:02:46 CET schrieb silverdr@wfmh.org.pl:
> > On 2018-03-15, at 21:50, groepaz@gmx.net wrote:
> > 
> > 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.[...]
> > 
> > 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 :)
> 
> The generic emulation fine, I agree, but what people saw on their screens
> back then depended on combination of at least the following:
> 
> - VIC model/revision
> - mainboard revision
> - modulator variant/revision or lack of one (SX)
> - monitor/tv type/age/settings
> 
> if not more, even if we talk only about PAL and 50Hz mains. While
> technically possible, to parametrise some things, and account for other,
> you probably wouldn't want to build accurate models for all possible
> combinations, even if GPU was used to process and render the final output.

micro64 already does a lot of this :) and there exist other shaders (for other 
emulators) that go into even further detail.

at some point all of that becomes a bit questionable though =P

-- 

http://hitmen.eu                 http://ar.pokefinder.org
http://vice-emu.sourceforge.net  http://magicdisk.untergrund.net

It is essential to understand that everybody sucked in the beginning. 
<Kristofer Dahl>
Received on 2018-03-16 00:00:02

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