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Hardware News   Hardware News : OS4 patch 1.2 for Sam440ep/flex boards
   posted by marko on 11-Feb-2011 23:33:21 (7090 reads)
There's an update of sam440ep_setup on OS4Depot.

With this new setting read speed increase around 50% on Radeon PCI cards
(up to 42 MB/s on a M9 card) and around 200% on RadeonHD PCI cards





What it does:

On some Sam440ep boards, the MMUCR register is not set correctly at bootstrap.
This leads to poor write L1 cache performances.
The utility check the register, and if needed, modify it.

On all Sam440ep boards with a Radeon card enables read prefetching for graphic ram.
If a Radeon card is detected, the utility will modify the POM2 PCI registers to enable read prefetching.
This speed up reads for the gfx card from 15 MB/s to 30 MB/s on a M9 card.

Sets the Latency Timer on the 440ep PCI Bridge,
With this new setting read speed increase around 50% on Radeon PCI cards
(up to 42 MB/s on a M9 card) and around 200% on RadeonHD PCI cards

Author:
ACube Systems Srl

OS4Depot submitter:
Max m3x Tretene

Download:
sam440ep_setup.lha
    

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PosterThread
klx300r 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 13-Feb-2011 2:42:11
#21 ]
Elite Member
Joined: 4-Mar-2008
Posts: 3633
From: Toronto, Canada

Quote:
RAGEMEM v0.37 results: --- VIDEO BUS --- Before any patches: READ: 14 MB/Sec WRITE: 50 MB/Sec Before this patch (1.1): READ: 29 MB/Sec WRITE: 63 MB/Sec After this patch (1.2): READ: 41 MB/Sec WRITE: 63 MB/Sec


same results for me too...impressive results compared to original ones


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Deniil715 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 13-Feb-2011 11:37:44
#22 ]
Elite Member
Joined: 14-May-2003
Posts: 4208
From: Sweden

@Mrodfr

Quote:
Hope Acube will improve more this patch. Maybe with 60-80mo/s, we could play all DVD without frameskip.


DVD is only about write speed to the video RAM. That is already 63MB/s. However, since a normal 32-bit 33MHz PCI port theoretically can handle 133MB/s, perhaps something still can be done.

The biggest bottle-neck would be the lack of L2 cache though I believe. Higher RAM read speeds would help a lot here. Don't know if that could be tweaked like how SetA1 does it for for the AmigaOnes..?


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m3x 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 13-Feb-2011 11:48:30
#23 ]
Regular Member
Joined: 15-May-2003
Posts: 311
From: Bologna, Italy

@Mrodfr

Quote:
Hope Acube will improve more this patch. Maybe with 60-80mo/s, we could play all DVD without frameskip.

Are 120 MB/s enough ?


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Mrodfr 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 13-Feb-2011 12:19:00
#24 ]
Super Member
Joined: 28-Jan-2007
Posts: 1396
From: French

For sure

Why you said that ? (a futur update actually in betatest ?) For sure 120 is enough, hum, read AND write


@Deniil715

Each time new patch, DVplayer skip less frame than before, Deniil715(a little each time).

Between 1.1 and 1.2, only read has been improved and for the DVplayer tests I have made with patch 1.2, less frameskip.

for sure, a new dvplayer and avcodec.library will help also to have less frameskip.

Last edited by Mrodfr on 13-Feb-2011 at 12:23 PM.
Last edited by Mrodfr on 13-Feb-2011 at 12:22 PM.


_________________
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-A1200+Mediator+VooDoo3+060/50+96mo+SCSI-KIT
-SAM440EP-667mhz-on MapowerKC3000+AOS4.1

Amiga Docs Disks Preservation Project

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klx300r 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 13-Feb-2011 14:44:04
#25 ]
Elite Member
Joined: 4-Mar-2008
Posts: 3633
From: Toronto, Canada

Quote:
Poster: m3x Date: 13-Feb-2011 6:48:30 @Mrodfr Quote: Hope Acube will improve more this patch. Maybe with 60-80mo/s, we could play all DVD without frameskip. Are 120 MB/s enough ?


ok now spill the beans Sammy


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ikir 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 14-Feb-2011 15:58:46
#26 ]
Elite Member
Joined: 18-Dec-2002
Posts: 5646
From: Italy

@m3x
What a teaser!! Thanks for your work Max!


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samo79 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 15-Feb-2011 12:18:59
#27 ]
Elite Member
Joined: 13-Feb-2003
Posts: 3437
From: Italy, Perugia

Quote:
RAGEMEM v0.37 - compiled 11/06/2010

CPU: AMCC PPC440EP 1.3 @ 799 Mhz
Caches Sizes: L1: 32 KB - L2: none - L3: none
Cache Line: 128

CPU
MAX MIPS: 1598

L1
READ32: 2841 MB/Sec
READ64: 5635 MB/Sec
WRITE32: 2855 MB/Sec
WRITE64: 5676 MB/Sec

RAM
READ32: 277 MB/Sec
READ64: 277 MB/Sec
WRITE32: 165 MB/Sec
WRITE64: 164 MB/Sec
WRITE: 888 MB/Sec (Tricky)

VIDEO BUS
READ: 41 MB/Sec
WRITE: 63 MB/Sec


Not bad

Last edited by samo79 on 15-Feb-2011 at 12:20 PM.


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Sam440ep Flex 800 Mhz 1 GB Ram + AmigaOS 4.1 Update 6
AmigaOne XE G3 800 Mhz - 640 MB Ram - Radeon 9200 SE + AmigaOS 4.1 Update 6

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Wizzard_o 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 16-Feb-2011 0:25:43
#28 ]
Cult Member
Joined: 14-Sep-2004
Posts: 701
From: UK, Northern Hemisphere, Earth, Solar System, Alpha Quadrant, The Milky-Way, Universe. 1.1.1.3.44.HP

I finally applied the update today and I certainly noticed a difference, thanks guys!


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OldFart 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 18-Feb-2011 16:34:32
#29 ]
Elite Member
Joined: 12-Sep-2004
Posts: 2953
From: Stad; en d'r is moar ain stad en da's Stad. Makkelk zat!

@DAX

Quote:
from the original 14MB to 41MB that's basically +300%

You're wrong by some 33.33% here
From 14 to 42 is a factor of 3, so +2 only, which in %% is 'ony' 200%. Still not bad!

OldFart


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