Re: Apple IIgs to VGA via GBS-8200/GBS-8220?

[Michael J. Mahon <mjmahon@aol.com>]

Andrew Selle <aselle@andyselle.com> wrote:
> I recently acquired a Apple IIgs without a RGB monitor. I've started
> the task of finding a suitable display that can generate high
> quality.  I know this has been discussed to death, but I hadn't found
> any mention of the GBS-8200 route with Apple IIgs specifically, only
> Atari ST, Amiga and Arcades.
> 
> I do not want to buy any CRT, as it seems like all monitors of that
> generation are on their way to dying.  So here are the options I've
> been thinking (based on reading this forum) in order of preference.
> Mainly I am hoping 1 will work and someone can tell me that they've
> done it or believe it would work and what might be envolved.
> 
> 1. GBS-8200
> 
> Theoretically will handle  14.5-16.5KHz through it's CGA mode (which I
> assume is arcade CGA and not IBM TTL CGA.. I was curious if anyone has
> done this and has pinouts + whatever (hopefully only passive)
> components are needed. This option seems pretty cheap <$30 and decent
> quality.
> 
> 2. Make a SCART and buy a Avery or Highway 100 type adapter
> http://www.ebay.com/itm/190560762949?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_2341wt_1141
> This seems to work fine, but is much more expensive than option 1.
> 
> 3. Make/buy a SCART cable and buy used a SCART samsung lcd monitors.
> 
> This seems like people have gotten this to work based on this cable
> http://vintageware.orconhosting.net.nz/apple2/scart.html
> and this thread http://www.digipedia.pl/usenet/thread/1647/2037/
> I'd rather not go this route because finding a TV with SCART is
> already impossible in the US and will only get worse rather soon.
> 
> -Andy

The problem with any non-CRT display is that it has discrete pixels, and
they almost certainly do not line up withe the pixels of Apple ][ video.
The resulting "beats" between the two pixel grids usually lead to
substandard results. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon