Thanks Mark, very cool. For those interested, guess most of the story behind the BPC is on Steve's site (http://hp9825.com/html/hybrid_microprocessor.html). F.Ulivi wrote the MAME emulation for it. I

#2100MX #HP9825

Also the 9872 plotters.

#2100MX #HP9825

I believe that the BPC was also used in the original HP64000 in-circuit emulator family. Arnie

#2100MX #HP9825

Really dearest! Thanks Marc Roland Von: VintHPcom@groups.io [mailto:VintHPcom@groups.io] Im Auftrag von CuriousMarc Gesendet: Mittwoch, 2. Februar 2022 19:41 An: VintHPcom@groups.io Betreff: [VintHPco

#2100MX #HP9825

Oh, very nice indeed. Thanks Marc! -Dave

#2100MX #HP9825

Heads up that I posted a new high resolution scan of the How They Do That manual for the BPC hybrid processor. Too big to fit here, so I uploaded it on the internet archive: https://archive.org/detail

#2100MX #HP9825

No but the nail is from B&Q! by banging a nail into a piece of wood...

#HP9825

by banging a nail into a piece of wood Is that from a British Oak Tree Paul Sussex UK

#HP9825

I have unearthed a 98034A HPIB adaptor for the 9825 calculator. I don’t have anything else related to this unit - although there appears to be plenty on the web. If anyone would like to make me an off

#HP9825

Thanks to you too for these great shots! --F.Ulivi

#HP9825

Look here ;) <https://wetransfer.com/downloads/e30eb7a44ac5b4449320d5aa988d472f20211220223229/969c560d6885a839326d6f8c59a2fcc820211220223254/b2b511> if you want other images, other shots, please let m

#HP9825

Yes, Craig sent me some very nice pictures of his 9825 machine. Thanks all the same, Marc. --F.Ulivi

#HP9825

I could do some if needed when I’m back from travel in 2 weeks, but I see Craig replied already, so I assume you are covered by the Master himself. Let me know if you still need some additional. Marc

#HP9825

I can do it, I have my 9825T handy.

#HP9825

Hi, I'm working on improving the visual appearance of my MAME-based emulation of HP9825. This is the current status of the HP9825T system: All keys (including RESET & SHIFT LOCK) are emulated. I also

#HP9825

As far is I can see at the moment, that won't be a problem. Read/write amplifiers for the 9825 are the same as for the 9845. The 9845 used the same tape drives as the 9825 only the last versions have

#HP9825

Nice work! I wonder whether the magnetization level of a real 9825 tape is compatible so that it can be reliably read on a standard 9845 tape drive module. It might be necessary to check with a scope

#HP9825

I’ll take a look at it this week, and try if I can recover a tape. -Rik Van: VintHPcom@groups.io <VintHPcom@groups.io> Namens fulivi@... Verzonden: zaterdag 24 juli 2021 10:41 Aan: VintHPcom@gro

#HP9825

So, it took a while but I think I have something to try to dump 9825 tapes on a 9845 machine. All of this was developed & tested on emulated systems so I'd like to know if someone is willing to try it

#HP9825

With some implementation of fft it should be possible to decode the tape.. -Rik

#HP9825