Re: [stella] Visible screen

Subject: Re: [stella] Visible screen
From: Glenn Saunders <cybpunks@xxxxxxxxxxxx>
Date: Wed, 30 May 2001 08:29:47 -0700
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.

- Archives (includes files) at Unsub & more at

Current Thread