Most of the big "standard" catalogs will not have anything but much of the rather plain types. You may have to go to a real distributor to get some of the parts - of course being subject to massive delays and high prices. Are both of those chips even still in production? If not, that might be a real challenge. I remember trying to get one of AMD super neat database coprocessors, but really felt a great deal of resistance by the sales people and the distributors. One note: many sales offices are decent (Motorola), and will look up (and copy) data for long gone chips. William Donzelli william(a)ans.net