RE: Re: [stella] StellaX PAL detection

Subject: RE: Re: [stella] StellaX PAL detection
From: Nicolás Olhaberry <nolh@xxxxxxxxxxxxx>
Date: Thu, 31 Jan 2002 06:57:13 -0300
Hello to all! It´s nice to see that the list has came back to life ;-)

----- Original Message -----
From: Glenn Saunders <cybpunks@xxxxxxxxxxx>
To: <stella@xxxxxxxxxxx>
Sent: Thursday, January 31, 2002 1:25 AM
Subject: Re: Re: [stella] StellaX PAL detection

> Aren't they already at 100%?  As far as banking schemes go, Z26 and Stella
> pretty much have the bases covered it seems, with Stella a little behind
> because of it not supporting the DPC chip.

I´m not sure that I have the latest Stella, but it the one I have doesn´t
emulate the 6507 data bus correctly. This is not that hard to do from
scratch, but might be a different thing now, since the whole emulator has

Also, doesn´t seem that addressing any RESXX register within 24 cpu cycles
after an HMOVE, leaves the object in the right position. BTW, how PCAE or
Z26 handle this?

I´ve solved this in my emu with some kludges, like if the RESXX occurs 21
cycles after HMOVE I add 2 to the object expected position, or if it occurs
at 20, I add 5, etc... Most likely, which RESXX is addressed should be taken
in consideration, an
maybe even at which colourclock HMOVE is addressed too, but this way seems
to be working fine for most games...



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