Not many. You
may find that only the high-volume distributors have
any of the 6502, Z80 or 6809 generation -- and you'd have to buy
in *huge* numbers. But having said that, many CPUs are simply not
made any more. So, you'd have to go to a specialist in obsolete
semiconductors.
Or just sacrifice an old Apple //e (common as dirt) or C64 (common as
lint) and use the chips inside.
A C64 might not be as optimal, though, because it has a 6510, not a 6502
(unless you really do want the on-chip I/O port). For common-as-lint
Commodores, if you really must, gutting a *sniffle* VIC-20 may be a better
choice.
(Sellam, I haven't forgotten about that disk, honest.)
--
---------------------------------- personal:
http://www.armory.com/~spectre/ --
Cameron Kaiser, Floodgap Systems Ltd * So. Calif., USA * ckaiser(a)floodgap.com
-- There are few problems that the liberal usage of high explosives can't cure.