Re: VGA for the IIgs - Different Approach?

[Kevin Dady <kevin@hackaday.com>]

On Oct 7, 11:07 pm, IUnknown <stevement...@gmail.com> wrote:
> Just thinking out loud here.....
>
> - expansion card
> - shadows the IIgs memory
> - some sort of glue logic / prom to package the active frame buffer
> (and other state) and send it out as an ethernet broadcast @ 15fps
> - software on windows/mac that listens for the broadcast and displays
> on a PC
>
> Not an easy project at all - but might be cheap enough to produce.
>
> - logic for handling dithering, etc would be entirely client-side.
> upgrading the logic/fixing bugs is not a firmware/hardware update....
> but software.
> - 100mbps is plenty fast enough to produce the 'video stream' @ 15hz
> and would have low enough latency as well.
> - no IP stack is required... simple ethernet frame broadcasts.
>
> Overall, some combination of FPGA, ethernet chip, prom, coprocessor,
> buffer memory and assorted logic would be required.....

I dunno about a IIGS but with my IIc once I get a pc involved its just
simpler to use a TV tuner card and TV time under linux ... TV time has
a great set of options such as progressive scan. Even with my no name
china "free with rebate" card 80 columns and HGR modes are getting
neat that "too sharp" threshold