Would like to borrow: Hydra controller card

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Treatment
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Would like to borrow: Hydra controller card

Postby Treatment » Tue Nov 21, 2017 1:51 pm

Hello,

Does anybody have a Hydra controller card I could borrow, to test a Hydra backplane before I put it on ebay, please?

I already have five ARM610's and a Simtec A5000 memory module, and I would like to be able to auction the lot as "tested and working".

Otherwise I'll just list it as "parts only, not working".

Treatment
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Re: Would like to borrow: Hydra controller card

Postby Treatment » Sat Nov 25, 2017 7:19 pm

What does the red star mean on the icon for this topic?

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MartinB
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Re: Would like to borrow: Hydra controller card

Postby MartinB » Sat Nov 25, 2017 7:40 pm

The red star denotes threads in which you’ve posted - i.e. I’ll see one for this thread too now.... :wink:

ajw99uk
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Re: Would like to borrow: Hydra controller card

Postby ajw99uk » Tue Nov 28, 2017 5:39 pm

Hi Treatment,
I see you have now listed the socket board by itself. Not sure I agree with the comments regarding multicore development and so forth, but that's by the by - I did want to note that the A5000 2MB RAM upgrade has nothing to do with Hydra (being for one of the pre-RiscPC series). Not sure if it would suffer or do any damage if fitted to Hydra.
Running RISCOS: A5000, A540, R140, RiscPC, RPi B
Running *nix: SGI Fuel & Indigo2, RPi2, x86, amd64, RiscPC, A540, R140

Treatment
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Re: Would like to borrow: Hydra controller card

Postby Treatment » Thu Nov 30, 2017 12:47 pm

It's a Simtec memory module, manufactured in 1998 and clearly designed to fit the Hydra.

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danielj
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Re: Would like to borrow: Hydra controller card

Postby danielj » Thu Nov 30, 2017 1:45 pm

Alas, it is for an A5000, not the hydra:
http://www.simtec.co.uk/products/AU4M5000/

d.

RobC
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Re: Would like to borrow: Hydra controller card

Postby RobC » Thu Nov 30, 2017 2:04 pm

Yes - according to the link below, the Hydra shared memory module is extremely rare. I very much a doubt Simtec would have made a specialised board if their standard A5000 memory upgrade would do the job. Given that there can't be many Hydras left around, I wouldn't plug that memory upgrade into it as it might do some damage.

http://www.acornarcade.com/forums/viewthread.php?threadid=12109

Treatment
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Re: Would like to borrow: Hydra controller card

Postby Treatment » Thu Nov 30, 2017 2:18 pm

Simtec banned music.

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danielj
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Re: Would like to borrow: Hydra controller card

Postby danielj » Thu Nov 30, 2017 2:24 pm

Must have got quite tedious in the workplace then.

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paulv
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Re: Would like to borrow: Hydra controller card

Postby paulv » Sun Dec 03, 2017 6:06 pm

https://www.ebay.co.uk/itm/142603847393

Really? :shock: Really? :roll:

That's not even LOL price... That's just depressingly unrealistic.

Paul

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davidb
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Re: Would like to borrow: Hydra controller card

Postby davidb » Sun Dec 03, 2017 6:30 pm

RISC OS was the operating system running on the Acorn computers ARM used to perform the demonstrations. This fact proves RISC OS was and is perfectly capable of multi-core operation.

I'd be very surprised if that was ever the case. :roll: Maybe someone should tell ROOL, then, if it's that easy: Bounty proposal - Multicore/node support

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vanekp
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Re: Would like to borrow: Hydra controller card

Postby vanekp » Sun Dec 03, 2017 7:07 pm

paulv wrote:https://www.ebay.co.uk/itm/142603847393

Really? :shock: Really? :roll:

That's not even LOL price... That's just depressingly unrealistic.

Paul

That is just insane :lol: :lol: :lol: a board with 4 chips on it.

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danielj
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Re: Would like to borrow: Hydra controller card

Postby danielj » Sun Dec 03, 2017 7:10 pm

In fairness, also 5x ARM 610 cards and 1x A5000 memory expansion...

d.

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vanekp
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Re: Would like to borrow: Hydra controller card

Postby vanekp » Sun Dec 03, 2017 7:16 pm

Ahh :lol: had not looked at the other pictures the price scared me off very quickly :D

paulb
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Re: Would like to borrow: Hydra controller card

Postby paulb » Sun Dec 03, 2017 7:37 pm

davidb wrote:
RISC OS was the operating system running on the Acorn computers ARM used to perform the demonstrations. This fact proves RISC OS was and is perfectly capable of multi-core operation.

I'd be very surprised if that was ever the case. :roll: Maybe someone should tell ROOL, then, if it's that easy: Bounty proposal - Multicore/node support


Simtec wrote:The Hydra API (Application program interface)

With four slave processor cards fitted a RiscPC with Hydra has, in theory, five times the processing power of a standard RiscPC. Unfortunately the operating system RISC OS is not a multiprocessor OS and has no way of taking advantage of this increased processing power. One way to make effective use of Hydra is to switch to an operating system which does support multiprocessing such as RiscBSD, Helios or Taos. This has the advantage that any applications software which can multithread will automatically take advantage of any available processors. However, for the ordinary RISC OS user, the easiest way to harness the power of Hydra is to use application software written to enhance parts of RISC OS which uses the Hydra API. As the API exists independently on RISC OS, any MP aware applications will make use of the new resources and ordinary applications will run unaffected.


From Simtec Hydra ARM Multiprocessor System, via Hydra multiprocessor board Resources.

crj
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Re: Would like to borrow: Hydra controller card

Postby crj » Sun Dec 03, 2017 9:51 pm

If (if) people are prepared to pay that much, it's almost worth reimplementing the Hydra from scratch!

Or just tracking down some ex-Simtec people, asking nicely for an IP licence and sending the Gerbers off to some random Chinese PCB assembler.


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