Posted By
gerliczer on 2014-10-29 12:32:22
| Re: general smooth scrolling questions
Hi icbrkr,
I'd suggest to compare the following code snippets:
LDA HorizPos ; *** get our VARIABLE *** STA $FF07 ; change FF07 (horiz scroll) ============================== LDA #$58 ; *** Return to "normal" horiz position STA $ff07 ============================== LDX #$07 ; next value loop07 STX HorizPos ; store it
Guesswork: by the symptoms you described, you are turning on PAL mode when you try to set the scroll position. (It is a good question why does this not bother YAPE?)
|