At 10:52 PM 5/29/2001 -0500, you wrote:
Hello all,
I may be interested in using more than the standard 192 scanlines
for my
kernal. Since televisions that are being produced today are a lot more
sophisticated than those of yore, I was wondering if anyone knew the
"displayable on almost all TV's" maximum kernal range, as it has probably
changed with time.
I know some Activision games used more lines than the standard,
so if no
one knows offhand, I can look there and do some comparisons.
Also, would I be free to expand upward (take some VBLANK time
away) as
well, or is this just an overscan-time sort of thing? I guess I'm just
looking for some limits.
Atari was VERY conservative. I think the 192 line standard they used on
the 2600 and 8-bit were based on studies of televisions taken way back in
early 1976 when the 2600 was in initial development.
Most of Atari's peers settled with a 200 line standard, which I think is
more reasonable. Those extra 8 scanlines really come in handy.
These days I think maybe you can push it to 208-210 as long as you center
the scanline usage but you might have some cropping at the edges on some TVs.
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