Am Montag, 4. Januar 2021, 17:19:04 CET schrieb Segher Boessenkool: > On Sun, Jan 03, 2021 at 09:45:39PM +0100, groepaz_at_gmx.net wrote: > > Not every detail in the design is clocked, some delays just happen because > > of gate propagation delays - and when the process changes, those delays > > may change as well. > > Yup, exactly. > > > The well known "grey dot" the new VICII produces are related > > to exactly the same thing. > > But this isn't true at all. You get the grey dot if *external* timing > is off! The difference isn't between VIC-II versions, the difference is > between boards (and what PLA or PLA replacement is used on that). ehrm, no. what you mean is the "sparkle bug" that appeared on very early boards, that is a totally different thing. the "grey dot" only shows on "new" VICII when any color register is being written, and is clearly related to internal timing. (the color coming from the pixel pipeline is not valid yet, and the VICII produces "0x0f" color for a fraction of a pixel). -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net I don't know the key to success, but the key to failure is trying to please everybody. <Bill Cosby>Received on 2021-01-04 18:00:56
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