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blizz1220
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Re: A4000T, auction end price Posted on 13-Jun-2013 18:09:16
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Joined: 12-Jun-2013 Posts: 437
From: Unknown | | |
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| @Bobo
Because Sonet card with 1 Ghz costs less then 50 $. |
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Bobo
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Re: A4000T, auction end price Posted on 13-Jun-2013 18:30:54
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Joined: 16-Dec-2012 Posts: 22
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| @blizz1220
And where to plug it?
Amiga has Zorro, Zorro hasn't proper DMA to operate Sonnet Marvell Discovery II has Last edited by Bobo on 13-Jun-2013 at 06:44 PM.
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blizz1220
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Re: A4000T, auction end price Posted on 13-Jun-2013 18:51:47
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Joined: 12-Jun-2013 Posts: 437
From: Unknown | | |
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| @Bobo
You would need Amiga 1200T or 4000T with Mediator board that ads PCI slots to Amigas.
Problem is only the firmware that you would need to rewrite and program so OS4 bootloader can work with it or possibly rewrite the bootloader itself.Hyperion would have to support this and give information and code.You would also need some sort of 68k to boot machine I guess.
With Hyperion support this could be done cheaply and in a short time period. |
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Bobo
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:02:27
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Joined: 16-Dec-2012 Posts: 22
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| @blizz1220
Problem is that M@diator hasn't DMA for Sonnet - it won't work |
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blizz1220
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:11:32
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Joined: 12-Jun-2013 Posts: 437
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| @Bobo
Whatever makes you think that?
Elbox seems to have thought otherwise and they should now , they made it |
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Bobo
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:21:28
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Joined: 16-Dec-2012 Posts: 22
From: Unknown | | |
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| @blizz1220
Made what? New fashion cooler for Sonnet or DMA for G4? If they made last Shark was on sale about 6 years
PS Almost 10 000 pounds - no bid... Last edited by Bobo on 13-Jun-2013 at 07:31 PM.
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blizz1220
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:32:19
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Joined: 12-Jun-2013 Posts: 437
From: Unknown | | |
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| @Bobo
They made Mediator PCI if I recall correctly
Even PPC 604 at 200 Mhz will only work at half of it's potential speed when you hook it up to Amiga's bus. Amiga's weren't designed for this kind of hardcore modding and can only do so much with technology that came years after they were designed.Still G4 would offer big speed boost over 604.
Anyway , I'm done , thread waaaay of topic , sorry ... |
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Bobo
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:39:22
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Joined: 16-Dec-2012 Posts: 22
From: Unknown | | |
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| @blizz1220
Quote:
blizz1220 wrote: @Bobo
They made Mediator PCI if I recall correctly
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Yes, they made but forgot to make proper DMA arbitrator So almost all cards which use DMA can't work |
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blizz1220
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:48:36
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Joined: 12-Jun-2013 Posts: 437
From: Unknown | | |
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| @Bobo
It can be done and you don't understand PCI ...
Wkipedia says :
A PCI architecture has no central DMA controller, unlike ISA. Instead, any PCI component can request control of the bus ("become the bus master") and request to read from and write to system memory.
Bye |
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Bobo
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Re: A4000T, auction end price Posted on 13-Jun-2013 19:52:57
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Joined: 16-Dec-2012 Posts: 22
From: Unknown | | |
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| @blizz1220
can be... on 680x0 local bus
and you don't understand Zorro III
see you
PS well, below 10 000 A4000T owners are failed.... Last edited by Bobo on 13-Jun-2013 at 09:02 PM.
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majsta
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Re: A4000T, auction end price Posted on 13-Jun-2013 21:34:26
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Joined: 29-Dec-2010 Posts: 22
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| Hi :)
Like i said number times before someone convinced Amiga community that all people think that there is something special in creating accelerator card with some CPU. Drive all signals to FPGA or something and inside do a little magic. Those days CPU can easily emulate MC68K at much higher speeds so thinking something like ARM is maybe better solution. Main problem with Sonnet is that there is no documentation and I have contacted manufacturer and they don't intend to give it to anyone so conclusion is that it is easier to create such accelerator with PPC from scratch than to spend time investigating how something work and what designer wanted to do with specific part. For me only solution is FPGA and creating accelerator cards in it will provide long life of CPU independence at last. About performance there is no practical limit I can see there. You have few choices 1. Creating much faster cache and expect 060 performance. 2. Including in one part coldfire who is actually integrated in some FPGA devices and inside FPGA you can emulate missing instructions. 3. In one part including NiosII part of Altera capable of producing 600Mips
So basically all the things needed to happen are between FPGA and FastRam what is done there will increase total performance. |
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blizz1220
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Re: A4000T, auction end price Posted on 13-Jun-2013 21:54:20
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Joined: 12-Jun-2013 Posts: 437
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bitman
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Re: A4000T, auction end price Posted on 14-Jun-2013 9:18:09
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Joined: 25-Mar-2008 Posts: 705
From: Fredericia, Denmark | | |
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| @blizz1220
I don't think you're right about that - a lot of classic users woul love 060. And now: Back on Topic
Quote:
People here are mostly into OS4 , they wouldn't really go for 060. |
_________________ Maintainer of www.bigbookofamigahardware.com |
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number6
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Re: A4000T, auction end price Posted on 18-Jun-2013 17:29:26
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Elite Member |
Joined: 25-Mar-2005 Posts: 11540
From: In the village | | |
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| @thread
I have posted this several times, but here we go one more time...
There was already a "fixed DMA" mediator prototype.
There was intent to make the new accelerator with this as a base.
Politics and horrid communications killed it.
And there was a h/w and s/w team who've proven their skill, so let's not go there...
#6
_________________ This posting, in its entirety, represents solely the perspective of the author. *Secrecy has served us so well* |
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wawa
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Re: A4000T, auction end price Posted on 18-Jun-2013 19:21:38
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Elite Member |
Joined: 21-Jan-2008 Posts: 6259
From: Unknown | | |
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| @majsta
Quote:
Hi :) Like i said number times before someone convinced Amiga community that all people think that there is something special in creating accelerator card with some CPU. Drive all signals to FPGA or something and inside do a little magic. Those days CPU can easily emulate MC68K at much higher speeds so thinking something like ARM is maybe better solution. Main problem with Sonnet is that there is no documentation and I have contacted manufacturer and they don't intend to give it to anyone so conclusion is that it is easier to create such accelerator with PPC from scratch than to spend time investigating how something work and what designer wanted to do with specific part. For me only solution is FPGA and creating accelerator cards in it will provide long life of CPU independence at last. About performance there is no practical limit I can see there. You have few choices 1. Creating much faster cache and expect 060 performance. 2. Including in one part coldfire who is actually integrated in some FPGA devices and inside FPGA you can emulate missing instructions. 3. In one part including NiosII part of Altera capable of producing 600Mips So basically all the things needed to happen are between FPGA and FastRam what is done there will increase total performance. |
good thougts. |
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wawa
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Re: A4000T, auction end price Posted on 18-Jun-2013 19:27:03
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Joined: 21-Jan-2008 Posts: 6259
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| @blizz1220
Quote:
Would you be able (in theory) to recreate Blizzard PPC in FPGA then and at what speed / price / time ? It is PPC 604 Mhz CPU and you could go for say 20 Mhz 020 to save FPGA space.It would be mostly used for OS4 so that 020 would hardly be in use except when booting. |
please dont push him into ppc like others here. his own considerations are pretty reasonable imho. and he has done pretty well working fpga accelerator fon an a600 himself: http://www.majsta.com btw. he is serbian too i guess ;)Last edited by wawa on 18-Jun-2013 at 07:27 PM.
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bitman
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Re: A4000T, auction end price Posted on 4-Sep-2013 21:18:01
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Joined: 25-Mar-2008 Posts: 705
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BigD
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Re: A4000T, auction end price Posted on 10-Feb-2020 17:26:12
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Elite Member |
Joined: 11-Aug-2005 Posts: 7307
From: UK | | |
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| @bitman
Quote:
bitman wrote: Those 4 who voted "Between £10000 and £16000", is it people who actually intend to bid in that range?
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Almost 7 years on and it looks like people are now prepared to put their money where their mouth is! I'd expect this C= model to hit at least £8,000 this time around!
Ebay: Commodore Amiga 4000T_________________ "Art challenges technology. Technology inspires the art." John Lasseter, Co-Founder of Pixar Animation Studios |
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DiscreetFX
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Re: A4000T, auction end price Posted on 10-Feb-2020 18:58:44
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Elite Member |
Joined: 12-Feb-2003 Posts: 2481
From: Chicago, IL | | |
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| @BigD
It's not even functional, forget that price. _________________ Sent from my Quantum Computer. |
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amigadave
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Re: A4000T, auction end price Posted on 10-Feb-2020 20:04:58
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Super Member |
Joined: 18-Jul-2005 Posts: 1731
From: Lake Shastina, Northern Calif. | | |
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| @number6
Quote:
number6 wrote: @thread
I have posted this several times, but here we go one more time...
There was already a "fixed DMA" mediator prototype.
There was intent to make the new accelerator with this as a base.
Politics and horrid communications killed it.
And there was a h/w and s/w team who've proven their skill, so let's not go there...
#6
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Can you provide a link to somewhere I can read more about this prototype with "fixed DMA", and the team that was going to make this product happen, plus who's politics and lack of communication killed it?_________________ Amiga! The computer that inspired so many, to accomplish so much, but has ended up in the hands of . . . . . . . . . . |
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