EclaireXL

06/21/2018

09:44 PM Bug #67: Pokey two tone timing problem

I found if I pokey 53775,11+128 on the Atari then it matches the Eclaire output. Unfortunately forcing the serious ou... foft

06/20/2018

10:03 PM Bug #67: Pokey two tone timing problem

So, errr identical then! Going to have to think about this one...
B is Atari, A is EclaireXL.
!http://www.64kib... foft

09:57 PM Bug #67: Pokey two tone timing problem

Nope, seems to be some interaction with the noise filtering. I wonder if the delay also needs applying to the pulse f... foft

09:27 PM Bug #67: Pokey two tone timing problem

A 2 cycle delay on the reset fixes both the 4 cycle and the 9 cycle case.
Now to check this specific example! foft

06/19/2018

09:55 PM Bug #67: Pokey two tone timing problem

I was concerned that my clocks were off at first since I was running in VGA mode, but that changes vsync slightly (50... foft

09:54 PM Bug #67: Pokey two tone timing problem

Been measuring cases on the scope...
Confirmed the extra cycle delays described in that forum post on my 600XL. Co... foft

06/14/2018

08:35 PM Bug #67: Pokey two tone timing problem

Related post: http://atariage.com/forums/topic/118448-implementation-of-pokey-2-tone-filter-in-emulation/page-3#entry... foft