HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

[ED SHARPE]

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.