Re: IIgs VGA challenge

[omashiroi@yahoo.com (Adam Barr)]

Ed, send me an email with your real email address , I would like to
talk to you about this idea. I would be willing to get you some AL250
chips to try this out on. Thanks!
-Adam

Ed Eastman <noone@nowhere.net> wrote in message news:<bvpnr5$9hq$1@unlnews.unl.edu>...
> I agree and attempted to assemble such a beast at Kfest last year for 
> the IIgs.  (Slotless VGA output for the IIgs)
> 
> The doubler device I pulled the chip from had an A/D converter to 
> generate digitally weighted binary to feed the doubler.  (NTSC 
> converter.)  hjowever, on the IIgs there are already binary weighted RGB 
> signals at the VGC graphics chip so no analog conversion loss would need 
> to be inheritied.
> 
> I proposed that this doubler could have taken the digital signal from 
> the VGC chip in the IIgs for a lossless conversion to VGA frequency. 
> What's more it would fit on the back of a socket that fits over the VGC 
> chip, making it slotless and totally transparent to the IIgs.
> 
> I was attemptint to assemble the tiny beast  when I broke the legs off 
> the only chip I had.  (AL250)
> 
> Anyone have an AL350 or AL251 they are not needing?
> 
> Thankx,
> Ed
> 
> 
> Michael J. Mahon wrote:
> > since the _only_
> > function that makes sense it to simply output native Apple II video
> > in VGA format.