Thank you for your quick response, Zach! :-) Has anybody else also had a
chance to check the PAL, NTSC on my demo?
- Weston
On Tue, 25 Mar 2003 09:42:31 -0800 (PST) Zach Matley
<matleyz@xxxxxxxxxxxxxxxxx> writes:
> It looks fixed on my TV. Good job.
>
> On Tue, 25 Mar 2003 henitrope@xxxxxxxx wrote:
>
> >
> > "Z26 counts the number of scan lines before the next frame."
> >
> > L O L ! That makes sense to me now! I was indeed "braindead" :-D
> >
> > Thanks for your help Dennis ( and the others who reponded ) ! I
> > appreciate it. I actually modelled my VerticalSync routine based
> on yours
> > in Climber05 so that's why I had a 200 scanline count. Until now,
> I
> > thought that "43" and "44" were the ONLY magic numbers to use to
> set up
> > timing!
> >
> > ( Actually, every hitchiker knows that the answer to everything is
> "42" )
> > ;-)
> >
> > Okay, after another all-nighter, I think I got it working now. In
> z26, I
> > got both screens to say "262 " lines in NTSC and "312" in PAL
> after I
> > fixed my constant variables and added more to Overscan.
> >
> > If you guys out there with CCs or Superchargers can give my demo
> another
> > whirl, hopefully it works fine now on the real thing.
> > The latest is attached above.
> >
> > Thank you in advance! :-)
> >
> > - Weston
> >
> >
> > On Mon, 24 Mar 2003 18:42:55 -0500 Dennis Debro
> <ddebro@xxxxxxxxxxxxx>
> > writes:
> > > Hi,
> > >
> > > > This sounds illogical! My current values: NTSC VBLANK: $01( 1
> > > count X
> > > > TIM64T ), IIRC, this gave my 202 lines. I haven't changed PAL
> > > VBLANK yet.
> > > > NTSC overscan: also $01!
> > >
> > > So that says your kernel is ~200 scan lines.
> > >
> > > > VBLANK is supposed to be 43 or 44 x TIM64T, right? So my
> current
> > > values
> > > > should cause the screen in z26 to ROLL, right?
> > >
> > > That depends. If you're going for a 200 scan line kernel you
> will
> > > have adjust your vertical blank and overscan lines accordingly.
> For
> > > example, Climber 5 has 200 scan lines for the kernel. To stay
> within
> > > the 262 scan lines for an NTSC display I chopped 4 lines off
> > > vertical blank and overscan time.
> > >
> > > > Does z26 show NTSC 192 lines or does it "display" all 262
> lines?
> > >
> > > Z26 counts the number of scan lines before the next frame.
> > >
> > > I hope this helps you.
> > >
> > > Take care,
> > > Dennis
> > >
> > >
> >
>
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> >
>
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