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Tron and Tapper were at 30Hz????

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whammoed:
Noticed recently that Tron and Tapper had resolutions of 512x480 at 30Hz.  Does this mean that they were interlaced on a Standard Res monitor to get that high resolution.  If so, I don't remember, did it have a lot of flicker??  Also, if this was the case, would there be a reason to not run it non-interlaced on a d9200??

im confused

Hoagie_one:
i seem to remember tron being kinda flickery, but tapper was always smooth

RayB:
I believe they used what's called a "medium" resolution monitor, rather than the "standard" (CGA) resolution. That's why they look nice and sharp.

Also nice n crispy are:

Timber
Demolition Derby
Narc

From Atari:
Marble Madness
Paperboy
Super Sprint/Championship Sprint
Toobin
...


spyhunter:
Narc was Medium, however the other Midway games mentioned are listed as Standard Resolution on www.klov.com.

I'm trying to figure out this whole 30Hz thing for my Spy Hunter, which is the same way, to work with it's newly installed LCD and I'm still confused.

I spoke to a techy at Happ Controls today and he told me some mumbo jumbo about needing to use a CRT yoke and that it has a need to be placed the correct way, and because of this an LCD would never work, but I still think it lies with this 30Hz thing...

SH

ahofle:
Yes they are interlaced.  Flicker only shows up when you have horizontal lines of high contrast difference sitting right next to each other (Windows has lots of 1 pixel lines like this which is why an interlaced Windows desktop looks like crap).  This is of course because every other line is drawn at a time.  Here's a quote from wpcmame who knows more about this stuff:


--- Quote ---Flicker is only visible if there is a contrast difference in alternate lines.
If a low-res arcade game is double-sized, the odd and even lines are exactly the same and there is no flicker.

Several arcade games (e.g. tapper and popeye) originally used interlaced display and didn't flicker (except where  intentional like the popeye bee-nest)
--- End quote ---

Spy Hunter is another interlaced game that never flickered.  I honestly don't see how an LCD (which does not 'interlace') could ever support a game like this, but what do I know. 

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