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Author Topic: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)  (Read 5186 times)

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Offline SpookyAmigaTopic starter

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I recently bought an A2000 version of the Supra Turbo 28 Accelerator Board.
I have read that the PCB for the A2000 and A500 versions are the same apart from the connectors to plug it onto the A500 or A200 motherboard.

Does anyone know for sure if the A2000 version can be used on an A500? I know there is a jumper settings that needs to be changed depending on which Amiga it is used on.

Also I am after some 86 pin edge connectors, one of which I want to use to make an adapter from the A500 edge connector to the Supra board, this is instead of replaceing the existing connector on the Supra PCB with the edge connector. Does anyone know a good source for 86 pin edge connectors now?

I shall probably also need some IDC sockets to plug the adapter on the the Supra board.

If anyone has any thoughts or suggestions I would be interested to know.

Thanks, Paul.
 

Offline T3000

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Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #1 on: August 28, 2009, 02:27:51 AM »
Quote from: SpookyAmiga;521162
Does anyone know for sure if the A2000 version can be used on an A500? I know there is a jumper settings that needs to be changed depending on which Amiga it is used on.
Thanks, Paul.


Yes it can. You'll need to find the plastic housing to encase the card.


Offline tone007

Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #2 on: August 28, 2009, 03:25:15 AM »
"Need" is such a strong word.  A nice piece of tupperware would do.
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Offline motrucker

Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #3 on: August 28, 2009, 07:31:02 PM »
Quote from: tone007;521191
"Need" is such a strong word.  A nice piece of tupperware would do.

But, what about the different connector?
Believe it or not, I have an original disk for the SupraTurbo 28 It's V1.51 with 1993 on the label...
Just another useless bit....
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Offline tone007

Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #4 on: August 28, 2009, 08:18:19 PM »
It sounds like SpookyAmiga is going to try getting around the different connectors by making something out of 86 position card edge connectors (like the ones that can be removed from dead A2000 boards.)  I'll admit I've compared the A2000 CPU slot and A500 expansion port pinouts in the past, they are almost exactly the same.  Never got around to trying an A2000 accelerator on an A500 though, worried I might blow it all up.
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Offline lorddef

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Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #5 on: August 28, 2009, 10:06:23 PM »
Quote from: motrucker;521339
But, what about the different connector?
Believe it or not, I have an original disk for the SupraTurbo 28 It's V1.51 with 1993 on the label...
Just another useless bit....



Bizzarely I have the manual for one too.  No idea how the hell I got it as I've never had one.
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Offline rkauer

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Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #6 on: August 29, 2009, 12:56:44 AM »
Aminet is always a good friend: http://aminet.net/package/docs/hard/AddZorro2slot

 I know this is for Zorro slots, not for the accelerator's port, but from there you can pinpoint the differences. ;-)
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Offline SpookyAmigaTopic starter

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Re: Supra Turbo 28 Accelerator Board (A2000 version to A500 conversion)
« Reply #7 on: August 30, 2009, 05:03:51 PM »
Thanks for the responses. I feel more confident now in giving it a go.

As for the casing I'm not worried, I would eventually like to mount everthing into a tower so it wouldn't be needed anyway.

I'm still not having much look finding the card slot connectors or some very long IDC connectors. IDC connectors only seem to go up to about 50 pin so I may have to join two together for that to work.
Also the IDC pins on the Supra are quite a bit shorter than normal. I think this might be because they've been pushed further in the PCB so there is something to solder the passthrough edge connector to, on the other side of the Supra PCB.

I found an edge connector on eBay with the correct pin count but it was much longer than the Amiga one so I guess it had a larger pin pitch.
Does anyone know what the pin pitch of the expansion connector actually is?

I may have to resort to finding dead hardware to remove the card slot from as tone007 suggested. Or perhaps join a couple of old ISA slots together from a dead PC motherboard and chop the ends off of them to join them in the middle.

The end goal I want to achieve *IF* it's possible and all the hardware will work together wthout conflict is to have the Supra, an Action Replay and an A590 all off the expansion port.
I realise that some things may not be able to use each others functionality, for instance I know that the Action Replay can't make use of the hard drive on an A590 as I used to have that setup many years ago. But I'd like the optional use of all those devices without having to swap things in and out. Especially if it's all mounted into a tower case.
This means I need to either find or make a board to split the expansion port slot into a further two ports.

Something like the one I mentioned in a previous post:
http://www.amiga.org/forums/showthread.php?p=518475#post518475

I was thinking of connecting everything up in the following order:
Amiga -> Card Splitter
Splitter Port 1 -> Action Replay
Splitter Port 2 -> Supra
Supra Passthrough -> A590

In my previous post zipper stated he had used the Supra with an Action Replay. The Supra also is purely an accelerator so I am assuming there won't be any resource/memory address conflicts with the A590.

Ok, enough babbling :-)

Paul.