Laurens Holst wrote:
> Just keep in mind to have at least 7 t-states between every transfer
> (=OUT),
> then it will work on all MSX-computers (OTIR and INIR are slow enough
> too).
> MSX-turboR and 7MHz have automatic slowdowns implemented to that works
> too.
>
No, this is not completely true!!
If you're writting to the VRAM that contains the spritedata and sprites
are enabled, then you'll need more time !
Apparently the VDP has a one byte buffer and writes this buffer to VRAM
when it has time to acces that VRAM. Since sprite VRAM is used rather
much the available time to write here is much less. So if you write to
fast this byte-buffer is overwritten with new data before the old one is
in the actual VRAM.
David Heremans
"One difference between SuSE and Red Hat is that the
former operates in a country where people don't sue
each other over coffee being too hot."
Linus Torvalds
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