I'm looking for:
U460, the video dac, ADV101 or VP101 (PLCC44), whatever is available that will work
Heh I used to worked for the team who designed the VP101 in Plymouth UK. Zarlink stopped making this chip in about 2002 but sold all their back stock to
http://www.rocelec.com where you can still buy them. Price may not be too good though

And the Zorro PAL, P702. It's a PLCC20 programmed to be part number 391199-03
There is a tiny sliver of information here :
http://www.amiga-stuff.com/hardware/pal16l8.htmlIf anyone has sources for these
AFAIK there are no binaries (JDEC) or sources for A4000 PALs

The only source code and binaries I've ever found were for projects worked on by Dave Haynie and the A4000(T) wasn't one of them.
http://www.thule.no/haynie/