We've been looking for years without success. I think unless you have a contact at UMC, not going to happen.

I might have them, with pinout diagram.. I'll have to check through some of my UMC books.

wiretap wrote:

I might have them, with pinout diagram.. I'll have to check through some of my UMC books.

I'm interested in these datasheets too.

but... you have UMC books?
...
... Bitsavers only has one scanned. Could you please consider sending them to Bitsavers or, when you have the time, scanning them to their chosen quality and sending the scans to them?
http://bitsavers.trailing-edge.com/components/umc/

They are design books from the mid 1990's.. Like 2 dozen of them, each 500+ pages. I don't know about scanning them because they still might be under NDA or patent/proprietary information. I have them at work, but don't have any way to scan that many pages anyhow. I'll have to try to find them, in our huge library of microprocessor books.

It would be absolutely wonderful if that info could find its way out there. Patents have expired by now, though NDA and such could be a potential concern but it seems it hasn't stopped any of the datasheet sites out there.

wiretap wrote:

I might have them, with pinout diagram.. I'll have to check through some of my UMC books.

You wouldn't happen to have old copies of AMIBCP would you? (version 2.1 and earlier)

I second the interest in UMC data books and AMIBCP

Does a perpetual NDA even exist? Aren't they always time limited?

maxtherabbit wrote:

Does a perpetual NDA even exist? Aren't they always time limited?

Yes, they exist. Trade secrets are perpetual.

As far as patents go, they can be renewed if purchased by someone else, which is what we see a lot with technology items. Also, extensions are routinely granted for trade secret items.

Patenting an invention requires disclosing it, which makes it the opposite of a trade secret. (The wish for inventions to be disclosed instead of kept secret was the supporting rationale for the creation of the patent system.) And there is thankfully no way for a patent to be extended beyond its original term, unless you count the practice of filing a new patent that builds upon an older one (but the old one will nevertheless expire).

I don't think patents or whatever is an issue for 90s datasheets/application notes. Not even sure UMC exists anymore?
The main issue is the great volume of them, it is my understanding we are talking thousands of pages here... Without access to a special automated book scanner everything is really hard... 🙁

An NDA may become an irrelevance if the information it relates to has come into the public domain via another (legitimate) route.

UMC is one of the bigger chip fabrication houses to this day. They no longer do their own stuff though, only stuff for others.

Anonymous Coward wrote:

We've been looking for years without success. I think unless you have a contact at UMC, not going to happen.

I tried, the official contact form, but no reply from them 🙁

I'd certainly be interested. M919 emulation can't be done without it 😀

Lol! That board is certainly developing a cult following.

SarahWalker was also interested in this once upon a time.
Re: PCEm. Another PC emulator.

wiretap wrote on 2019-08-27, 18:38:

I might have them, with pinout diagram.. I'll have to check through some of my UMC books.

It's been a while,any luck with finding a UMC chipset datasheets please?

https://usermanual.wiki/Document/UMCDataBook1986.1234633335