Re: Hardware emulation of 6509 using 6502?

From: groepaz_at_gmx.net
Date: Thu, 15 Mar 2018 21:50:02 +0100
Message-ID: <7044576.U8QnxaIRFB@rakete>
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 :)

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<ZoLO>
Received on 2018-03-15 22:00:21

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