a2aviator@gmail.com wrote:
Michael J. Mahon wrote:Actually, VGA (or other RGB support) can be added to the IIgs without disturbing or altering its functions in any way. Several people are working on it, and I expect it won't be long before we see results.Interesting, out of curiosity, I know of Ed Eastman has the VGA Thingy that seems to refuse to be.. I've not observed much else other than that.
I'm thinking on the line that one would mimic the original hardware when generating the graphics so the way the RAM works and the machine in general is not disturbed.
So no change of crystal on the motherboard is needed. The circuit will read the signal into other, internal to itself, ram and make a new signal, duplicating lines etc. so it becomes for example 1024 by 768 and output it as SVGA.
Note that horizontal pixels on minitors are still analogue, arbitrary, just a timed area, so one can display any number of pixels one likes so long as it uses the same time frame as 1024 pixels takes from a PC SVGA card (of course up to the max as defined by the bandwith in that mode though).
Note on the note LCD sceens of course will have horizontal pixels according to its dot pitch but the processing of the horizontal
-- Knut (delete 'nogarbage.' for email)