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Re: VERY strange ebay bidding



Bill Garber wrote:
"Christopher G. Mason" <cgm1@my-deja.com> wrote in message news:AkQgk.209$5Q.185@trnddc06...
Bill Garber wrote:
I've got one spare, that doesn't work as well as the one I use. I'm hoping to find, build, or see someone build, an RGB 15K to VGA 31K converter that works with the IIgs. I am so afraid that, eventually, there will be no more IIgs RGB monitors that do work at all. Yes, they can be repaired, but, who wants to take the risk of electrocuting themselves.
There are plenty on the market nowadays, like this one:
http://ambery.com/rgbcgatovgac.html

Video transcoders (RGBS to YCbCr) are also readily available.

Lemme try to explain why Apple II is not listed under the supported devices that can be converted. Apple II's video is not perfectly sync'd to NTSC standard. Also, most, if not all, RGB converters are TTL to VGA analog. The Apple IIgs is analog RGB. I have seen those and refrained from wasting money on one.
Bill Garber from GS-Electronics
http://www.garberstreet.com



The Atari ST and Amiga output 15.75khz analog RGB just like the Apple IIgs. Same goes for JAMMA standard arcade boards, which tend to have picky timings as well. I know some JAMMA boards won't even work with the Micomsoft XRGB2+ since its strict about the input video (its predecessor the XRGB2 isn't picky and is prized by arcade board owners).

I have tested the IIgs with the XRGB2+ and many 15.75khz RGB capable monitors and it works fine, this upscan converter should work fine as well. The reference to CGA in the product's name is about the input scanrate (CGA/TTL RGB uses 15.75khz monitors), not that it is TTL only.