Re: An LCD for your IIGS?

[mjmahon@aol.com (Michael J. Mahon)]

Scott Alfter replied:

<snip>

>(Hmm...it sounds like you'd want to have the monitor auto-adjust while
>booted into GS/OS, as it ought to be able to lock onto 640x200 video as if
>it were 640x480 interlaced video.  You'd end up with black bars at the top
>and bottom, as there are 80 extra (interlaced) scanlines that the IIGS
>doesn't generate.  Once that's set up, it should interpolate from the lower
>resolutions in the same way...while the resolution falls to 560x192 or
>280x192, the scan rates stay the same.)

Interesting--I never though much about what an LCD display would
do with non-interlaced NTSC-like video.  If the designers were purists,
it would only display the odd lines (since the correct phasing of 
horixontal to vertical sync to produce the even lines never occurs).

But that might be less appealing than simply alternately displaying
the odd and even lines, with the effect in most cases of displaying
each line twice.  Another alternative would be to literally display
each line twice, with each line being updated 60 times per second.

You've made me curious about what various LDCs do in this
situation.  ;-)

-michael

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