> Can you try reading 0x2002 right afterwards and see if you get the
> correct data.
>
That's a good idea. I added a bunch of LDA/STA's to work RAM last night
to help me see how far it's getting. I can use the P1/P2 LEDs as
diagnostic lights too...
> I think Jeff was having a very similar problem when he tried
> 'animating' on the
> Space Duel hardware. Jeff???????
>
Sounds possible.
> You need to read the /VGHalt line to see when the VG is done. This may
> be the problem?
>
Could be. For some reason I'm under the impression that Tempest doesn't
have one. Maybe I just missed it. (I was just using the Memory Map in
the MAME source for reference.) That's exactly what I need though to be
able to avoid bus contention in VRAM...
Thanks!
-Clay
Received on Thu Apr 15 15:14:05 1999
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