Manuel wrote:
> In the kernel you just do:
>
> LDA ZP,X -> 3 cycles
> STA ZP -> 3 cycles
Correction: LDA ZP,X needs 4 cycles :-)
-> 7 * 6 = 42, still looks doable.
And for PF0 he does (memory is always very short):
LDA ZP,X -> 4 cycles
STA PF0 -> 3 cycles
ASL -> 2 cycles
ASL -> 2 cycles
ASL -> 2 cycles
ASL -> 2 cycles
STA PF0 -> 3 cycles
That's 18 (not just 14) cycles for PF0 -> 46, still look's doable...
BUT, that is happening in EVERY line, and there still is no code for displaying GRPx, the color changes and the loop overhead. And only 30 cycles (without WSYNC) left.
A full size asymmetrical PF needs a LOT of cylces!
Have fun!
Thomas
_______________________________________________________
Thomas Jentzsch | *** Every bit is sacred ! ***
tjentzsch at web dot de |
______________________________________________________________________________
All inclusive! 100 MB Speicher, 1000 Mails, Wunschrufnummer, Superstars,
Top-Events, Preisvorteile und mehr unter http://club.web.de.
----------------------------------------------------------------------------------------------
Archives (includes files) at http://www.biglist.com/lists/stella/archives/
Unsub & more at http://www.biglist.com/lists/stella/
