well the? good? thing? is? Marc? with? turn over in? industrial? facilities? and? updating? tech...? ? what? you? are? looking? for? ?should? come? available at a? reasonable? ?price....? ?yikes? I? am amazed? how? cheaply? ? some of the normal? biological? scopes? ?go? ?for? ?now... we have been offloading? some? of? ours? ?from the? collection as? for? instance? with? a ziess standard? we? have? 3? and? ?really? should? only? have? one as? an? example....? ?they are? ?a partial? price? of? what? ?they would? have? been? 10? years? ago. Let? me? know? how? you? ?do.? looking? ?for? Nomarsk? ?stuff. We? ?do? not? have? any? extra. We? may? have? something? extra in? Nikon? ?with? Francion Yamatto? ?somewhere though, Ed# I? have? not? been? to may? ?auctions at? any of? the industrial? facilities or? auctioneers? ?in? years? to? look? ?for? ?hi? power? ?semiconductor? ?scopes? ?but? that? is? where? they? used to? show? up. In a message dated 5/20/2019 10:36:40 PM US Mountain Standard Time, curiousmarc3 at gmail.com writes: Nomarski microscopy, Ed. Differential phase contrast microscopy. Makes very small height differences (partial wavelength) on mostly planar objects pop out, and creates amazing color effects as a biproduct. Pretty much a stalwart of any good cleanroom microscope. Every manufacturer offers it, usually a pretty expensive option as all your optics have to be stress-free. I dream to own one of these one day. Marc ? From: cctalk <cctalk-bounces at classiccmp.org> on behalf of "cctalk at classiccmp.org" <cctalk at classiccmp.org> Reply-To: "COURYHOUSE at aol.com" <couryhouse at aol.com>, "cctalk at classiccmp.org" <cctalk at classiccmp.org> Date: Monday, May 20, 2019 at 11:20 AM To: "COURYHOUSE at aol.com" <couryhouse at aol.com>, <spacewar at gmail.com>, "cctalk at classiccmp.org" <cctalk at classiccmp.org> Subject: Re: HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting? should? say ?Francion Yamamotto? ?not ?Yrancion Yamamotto In a message dated 5/20/2019 10:07:04 AM US Mountain Standard Time, couryhouse at aol.com writes: Since? we? have? nice? microscopes at? the museum? project? we? were? hired? to? photo? some IC? innards? years? back. This? ended? up? becoming? a minor obsession? for? a short? time? as? the? artwork under? various? illuminations? is? fantastic.? One of the things? that? seemed? to show the mots? difference in? detail between layers and highs? etc... was? differential? interference contrast? (after? nomorski (sp?) ( this? was on our? Ziess Ultraphot? and? seems? to be? a Zeiss? only? ? offering.0? ?on? the? Japanese? side of? things? Nikon? had? ?Yrancion Yamamotto (sp?)? method? which? seems? ?nice? ? but? I? preferred? the? ?Nomeriski. Using? these? ?methods? you? may be? able? to extract? more usable? detail? ?than? with traditional methods.? ?and? wow? the? color? photos? are? ?frame-able! But? ?kinda? what? I? wanted to mention? to is? depending? on? what? era? ?the chips? were? the? over? coatings? ? seemed? to? worsen? the view? the newer the chip? or? so? I? thought at the? time. Such? great? ?fun? to? photo? ?the? little? ic innards!? ?even? a? standard? ?illum.? ?scope? with the? vertical? episcopic? illumination? gives? ?some? ? fun? photos? too,? especially? on the? earlier? ?chips. Don't? know? if? any? of? ?this? will help on the? HP-01? roms? but? sure? was? fun to talk about? again ed sharpe archivist for? smecc In a message dated 5/20/2019 9:00:09 AM US Mountain Standard Time, spacewar at gmail.com writes: Only just within the last month I finally obtained a ROM dump from a production HP-01, for potential use in my Nonpareil simulator. Previously I only had the preproduction code listed in a US patent. I'm not sure when I'll have time to actually work on the simulation, though. My original plan had been to crack open an HP-01 module and try to read the ROM bits optically, as Peter Monta did for the HP-35. However, that didn't work, probably due to a passivation coating on the ROM dies.