At 17:24 23.05.98 EDT, you wrote:
>I'm not even 100% sure I'll do anything REAL
I hope, you will do something real on the VCS. The demo looks
quite promissing, atleast on the emulator. :-)
>The demo (as bad as it is still coded) runs cycle exact tight as it is now.
>One cycle more and on the emulator a streching that you mentioned does occur
>too.
>That would mean... that the PAL timing is different. :-(
>No emulator seems to support this, did anybody else encounter something like
>that?
After looking at your code, I don't think it has anything to do
with PAL timing. It seems to be the problem with WSYNC taking
more than 3 cycles to perform. I don't remember the exact timing,
but I think Eric has posted about this some time ago. If you
do a WSYNC after cycle 70, it would spill into the next scanline.
In your sprite display routine, you seem to do the WSYNC pretty
late in the scanline. That seems to be the problem.
Unfortunately none of the emulators does this correctely, but
maybe Bradford can research it and include it in the next
version of Stella.
Ciao, Eckhard Stolberg
--
Archives (includes files) at http://www.biglist.com/lists/stella/archives/
Unsub & more at http://www.biglist.com/lists/stella/stella.html
