Re: CIA old/new?

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Mon, 4 Jan 2021 17:54:59 +0100 Message-ID: <be96de47-090d-04c5-91c8-fa37ac62d3d7_at_laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 1/4/21 5:19 PM, Segher Boessenkool wrote:
> 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).

So a 856x VIC II on an old board like a 250407 shouldn't show grey dots?

BTW: TED also has this 'problem'.

  Gerrit