🚀 go-pugleaf

In article <2190@netcom.UUCP> hue@netcom.UUCP (Jonathan Hue) writes:
>How about using a Motorola MC1378 (Color Television Composite Video Overlay
>Synchronizer)?  This alone won't do it, but it looks like you just need to
>generate a couple other timing signals to get this thing to work.  It's in the
>Motorola Linear and Interface Integrated Circuits data book.

One problem you may have with this is getting a 28MHz clock (8x SC) for the 
Amiga from the 38MHz (10x SC) output of the the MC1378. I designed & built a
system a few years ago (68000, 512k) which used the 1378 to overlay
bit-mapped graphics onto a video signal. My system used a 14MHz (4x SC)
clock which was derived from the 38MHz using a single PAL. This gave an
unsymmetrical clock signal; my system didn't mind, but I don't know if the
Amiga could handle it. Apart from this, there may be difficulty in
obtaining some of the circuit components (200nS delay line, chroma bandpass
transformer) - I got a local distributor to give me some 'samples'. There
is a Motorola application note which includes a PCB layout for the 1378.
Best of all, it works!! 2 chips + assorted passive components = genlock.
-- 
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