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hardware OS4   hardware OS4 : UDMA IDE-DEVICE FOR AMIGAONE
   posted by Anonymous on 2-Apr-2004 19:51:56 (10968 reads)
A1IDE.device using UDMA100 running 3 "all night" md5sum scripts on a 50 MB file without any data corruption.


This is a thumbnail, click on the image to get full size.



Showing a working, but not optimised, UDMA driver on AOS4 not hitting any "DMA bugs".

Screenshot courtesy of Hyperion.

    

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PosterThread
SlayeR__ 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:01:59
#1 ]
Cult Member
Joined: 24-Dec-2002
Posts: 634
From: Unknown

Who you gonna call FUD BUSTERS

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mr2 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:03:08
#2 ]
Cult Member
Joined: 3-Feb-2004
Posts: 622
From: Poland

Does it mean that the driver with DMA is finished now and "the problem" is solved?

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ssolie 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:04:18
#3 ]
Elite Member
Joined: 10-Mar-2003
Posts: 2692
From: Alberta, Canada

Countdown until the naysayers and skeptics find something to nitpick: 5, 4, 3, 2...

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Jamie_S 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:07:30
#4 ]
Cult Member
Joined: 26-Oct-2003
Posts: 793
From: Purbeck, UK

Excellent news

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Ami603 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:11:08
#5 ]
Cult Member
Joined: 7-Mar-2003
Posts: 567
From: Valencia,Spain 8-)

Yeah,this should be remembered as "there is no UDMA without April,
as someone pointed some time ago..."

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DrBombcrater 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:17:29
#6 ]
Super Member
Joined: 6-Feb-2004
Posts: 1382
From: UK

Yep, looks good.

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KimmoK 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:18:09
#7 ]
Elite Member
Joined: 14-Mar-2003
Posts: 5057
From: Ylikiiminki, Finland

Way to go!

I will not pop the champagne untill tests have been running a few days in different kind of load situations.... keep cool.

Is that 16Mbytes/second. using 68k emulation in multitasking with those others oh

Imagine if that screenshot would have been released 1 Apr 2004 ...

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mjohnson 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:22:03
#8 ]
Super Member
Joined: 11-Aug-2003
Posts: 1297
From: going to and fro in the earth, and from walking up and down in it.

Eeeeexcellent!

So, is this fresh from Hyperion, or has it made a run with the beta-testers?

It won't be included with the pre-release, or? (Please say that this is what's been holding it up this time around!)

When will someone include whatever magic they made for OS4 into the Linux-kernel?

And what exactly is "goodtime.avi"?

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Hyperionmp 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:26:26
#9 ]
Hyperion
Joined: 8-Mar-2003
Posts: 502
From: Unknown

The IDE driver is still very unoptimised.

Performance is between 20-30 MB/s on average.

The benchmark program is 68K being emulated however.

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KimmoK 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:30:50
#10 ]
Elite Member
Joined: 14-Mar-2003
Posts: 5057
From: Ylikiiminki, Finland

@Ben
Ok. Thanks for the info.

To get the DMA to work perfectly on A1 is as important as the whole AOS release for A1, in my opinnion.

UPDATE: Beers withdrawn to a better time & moment. :-|



Now.... another problem ..... how could I any more motivate myself to try to fix the 9Mb/sec SCSI kit of my A4k ....

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DrBombcrater 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:31:16
#11 ]
Super Member
Joined: 6-Feb-2004
Posts: 1382
From: UK

@Hyperionmp

Congratulations, guys. This is very good news.

Will the DMA capable a1ide device make it into the pre-release?

@mjohnson

It's a music video that's included on the install CD for Windows 95

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SlayeR__ 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:36:53
#12 ]
Cult Member
Joined: 24-Dec-2002
Posts: 634
From: Unknown

An emulated 020 i see, is it possible to choose which cpu to emulate ?.

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tomazkid 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:39:27
#13 ]
Team Member
Joined: 31-Jul-2003
Posts: 11693
From: Kristianstad, Sweden

Quote:
The IDE driver is still very unoptimised.

Performance is between 20-30 MB/s on average.


So what!?

My A1 with Debian does not even reach 20MB/s....

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xeron 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:50:05
#14 ]
Elite Member
Joined: 22-Jun-2003
Posts: 2439
From: Weston-Super-Mare, Somerset, England, UK, Europe, Earth, The Milky Way, The Universe

Quote:

An emulated 020 i see, is it possible to choose which cpu to emulate ?.


What would be the point? The 040 and 060 have LESS commands than the 020, and if the emulator supports all 020 commands, it might as well identify itself as an 020. Opting to choose "040" or "060" wouldn't make the emulator itself any faster.

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The_Editor 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 20:52:55
#15 ]
Elite Member
Joined: 7-Mar-2003
Posts: 7626
From: 192.168.0.02 ..Pederburgh .. Iceni

Quote:
"there is no UDMA without April,"


But it IS April now !!


:P


Btw .. Excellent news.

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RWO 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 21:03:16
#16 ]
Regular Member
Joined: 8-Mar-2003
Posts: 456
From: Denmark

Quote:
What would be the point? The 040 and 060 have LESS commands than the 020, and if the emulator supports all 020 commands, it might as well identify itself as an 020. Opting to choose "040" or "060" wouldn't make the emulator itself any faster.


That is simply not true!! The 040 and 060 have alot FPU and MMU commands that the 020 dont have. The 020 have 2 opcodes (CALLM, RTM) that none of the other cpus have but they are not used and proberly not even emulated by OS4.

-RWO

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Georg 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 21:18:48
#17 ]
Regular Member
Joined: 14-May-2003
Posts: 435
From: Unknown

Quote:
Performance is between 20-30 MB/s on average


What DMA mode (mdma(0|1|2), udma(0|1|2|3|4|5) is/was being used?

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xeron 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 21:24:34
#18 ]
Elite Member
Joined: 22-Jun-2003
Posts: 2439
From: Weston-Super-Mare, Somerset, England, UK, Europe, Earth, The Milky Way, The Universe

@RWO

Hmmm.. maybe i'm wrong... it certainly wouldn't be the first time. I thought some of the bitfield ops were emulated on the 040 and 060, but its been a loooong time since i looked into the differences.

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SlayeR__ 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 21:29:01
#19 ]
Cult Member
Joined: 24-Dec-2002
Posts: 634
From: Unknown

Xeron:

For the point of choice, i like choices :).

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Chris_Y 
Re: UDMA IDE-DEVICE FOR AMIGAONE
Posted on 2-Apr-2004 21:36:42
#20 ]
Elite Member
Joined: 21-Jun-2003
Posts: 3102
From: Beds, UK

There are some instructions that are emulated on the 040 and 060 as the CPU instruction set doesn't include them. I don't think it makes the slightest bit of difference what the emulator reports itself as, but it makes sense to specify the most compatible CPU (ie. 020 or 030). As there is no MMU emulation AFAIK, then 68020 is more sensible as some 68030 detection code may assume a 68030 has an MMU.

Chris

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