[Coco] S-video Prospects...

[jdaggett at gate.net]

John

I will almost bet that the MC1377 is no longer available. Motorola 
killed off a lot of the conseumer electronics IC even before they 
spun off SPS as Freescale. 

I agree usign the AD723/4 chip on a daughter board would be far 
more feasible.

james.

On 17 Dec 2005 at 16:13, John Kowalski wrote:

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From:           	sock at axess.com (John Kowalski)
Subject:        	Re: [Coco] S-video Prospects...
Date sent:      	Sat, 17 Dec 2005 16:13:38 -0500 (EST)
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> At 02:15 PM 17/12/2005 -0500, Roger "Merch" Merchberger wrote:
> >That said, my service manual has the complete parts lists (right down
> >to the capacitors & resistors) and a PCB layout of both sides of the
> >PAL daughterboard. If all of the 3 chips are commercially available,
> >other than the actual building of the board, one _might_ be able to
> >come up with a source of PAL boards without having to destroy PAL
> >CoCo3's in the process... ;-)
> >
> >How much trouble would a person be in if he or she were able to...
> >"replicate" the PAL board? [[ Admittedly, it's not like said person
> >would be costing Tandy any lost profits... ]]
> 
> I haven't opened up the project box to have a look at that board
> lately, but I have a feeling the chips aren't available any more and
> that the board has too many other components to make it worthwire to
> build as-is.
> 
> Stephen Fischer suggested a few chips a while back.  This one in
> particular is probably ideal:
> 
> http://www.analog.com/en/prod/0,2877,AD724,00.html
> 
> It pretty much does everything to generate composite & svideo all by
> itself and beyond adding a crystal to it, probably requires next to no
> additional parts to build an RGB to S-video adapter out of it.
> 
> If we want simple and inexpensive, this is probably it.
> 
>                                    John Kowalski (Sock Master)
>                                    http://www.axess.com/twilight/sock/
> 
> 
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