Last Gasp for the 8271

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BeebMaster
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Last Gasp for the 8271

Post by BeebMaster » Tue Apr 16, 2019 8:40 pm

Amazingly, or maybe even adorably, I still get a handful of requests for the trusty old 8271 every year. I think I may now have sourced some after a few years of drawing a blank, I'm just seeing if I can get a reasonable price on them. If I can I might try to do a very very very last ever never to be repeated once in a lifetime (again) batch of 8271 upgrade kits. Would there be any interest? Are there even any tape-only Beebs left? Or maybe just the 8271 chip itself, for the Beeb, or Atom/System clones?
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roland
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Re: Last Gasp for the 8271

Post by roland » Tue Apr 16, 2019 9:04 pm

Well, name your price and I'll decide if I want one or two 8271's. The parts of the Atom FDC board are easy to get or even to replace by a (single) CPLD but the 8271 is a show-stopper when it comes to recreating the FDC board. So one or two controllers might be welcome.
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Re: Last Gasp for the 8271

Post by danielj » Tue Apr 16, 2019 10:04 pm

Likewise, let me know roughly what you think the price would be...

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Re: Last Gasp for the 8271

Post by KenLowe » Tue Apr 16, 2019 10:23 pm

Same here. Interested in a couple, subject to knowing the price...

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Re: Last Gasp for the 8271

Post by guesser » Wed Apr 17, 2019 12:09 am

I've got a tape only beeb, but I've got two others and I think the tape only one had some fault that I never investigated.
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Re: Last Gasp for the 8271

Post by duikkie » Wed Apr 17, 2019 4:46 am

i like the 8271 chip , nice things to program. and make protected discs :shock: :D

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Re: Last Gasp for the 8271

Post by Kazzie » Wed Apr 17, 2019 6:33 am

I'll be wanting an 8271 for my System clone, and would be happy to join in with a bulk order.

(I had planned on fitting a 1770 to my Beeb and cascading the 8271, but the Vine Replay that it's fitted with is 8271-only.)
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Re: Last Gasp for the 8271

Post by AndyF » Wed Apr 17, 2019 8:04 am

Are not most software titles compatible with the 177x series of controller ?

They seem to function just fine with the 5.25 floppies. At least for me although I don't own a working 5.25 drive anymore, then again I only have a couple of discs in that size and have images of them.

I think perhaps the reasoning for wanting the 8271 is the few 'original' disc images which had protection whereby it would attempt to control the controller directly perhaps ? This would obviously cause issues with the 177x , from memory the original Hobbit disc (if you can find a working one!) has this.

As an aside does the CTRL+Z (I think its Z, I forget now) with the 177x not improve matters a fraction ?

EDIT... Missed the part about other systems requirements for the 8271, sorry! :oops: That indeed does make sense now as trying to force/cobble in a 177x would be a lot of trouble no doubt.
Last edited by AndyF on Wed Apr 17, 2019 8:07 am, edited 2 times in total.
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Re: Last Gasp for the 8271

Post by trixster » Wed Apr 17, 2019 8:16 am

I would be similarly interested in a kit to have as a spare.
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Re: Last Gasp for the 8271

Post by Prime » Wed Apr 17, 2019 8:20 am

Yeah I'd be interested in 2-3 8271s, just as spares for Atom / System.

Though for the Atom I did produce a 177x disk interface, so the code for that exists and is as far as I can tell compatible with all the software I've seen as there didn't seem to be much Atom / System software that made direct access to the FDC, mostly used calls through the OS.

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Re: Last Gasp for the 8271

Post by anightin » Wed Apr 17, 2019 9:44 am

I would be interested in a spare too. Many thanks for asking.

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Re: Last Gasp for the 8271

Post by rharper » Wed Apr 17, 2019 9:55 am

I would be interested in an upgrade kit.
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Re: Last Gasp for the 8271

Post by RonBate » Sat Apr 20, 2019 6:01 am

I am interested in an 8271 upgrade kit. Thanks.

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