Chris Wilkson wrote:
> At first glance I don't see anything wrong with it.
Me neither, that's why the problem drives me crazy.
> <TOTAL PARANOIA> Maybe your version of z26 isn't
> counting lines right?
> </PARANOIA>
LOL
Z26 works perfectly, if I don't use the TIM64T routine
but a basic 37 VBLANK scanlines loop like this :
LDX 37
Vertical_Blank
STA WSYNC
DEX
BNE Vertical_Blank
everything is fine, z26 gives me my 262 scanlines.
> Trying inserting the following lines into your code
> before the frame loop:
>
> Setup_Playfield
> LDA #$ff
> STA PF0
> LDA #$04
> STA COLUPF
Nice idea ! very clever ;-)
I changed the color value (04 was too dark to count)
and run it (mode 6) : there's 39 scanlines drawn not
40... It seems there's really a problem.
Does anyone can explain this ?
Take care,
Chris
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