Pulsar PCI Configuration Registers

Tips and advice for getting the most from Scope. No questions here please.

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remixme
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Post by remixme »

We've all seen how utils like wpcredit, can be used to edit bios settings.
But it can also be used to edit settings for other pci devices. (cntrl-d)
Has anyone looked into the possibility of insteresting pulsar tweaks?
One other thing, In can be used to edit the PCI latencies of individual devices, useful for those pesky cards that hog the pci bus. If anyone has any knowledge they care to share.




<font size=-1>[ This Message was edited by: remixme on 2002-01-01 08:52 ]</font>
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at0m
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Post by at0m »

wpset.exe works on VIA chipsets. I don't know a BIOS tweak app for other chipsets. I used to have MSI694Dpro, now I'm on Acorp's 6A815EPD.

On VIA mobo's I know you can set latencies for each pci device. Set LAN to low buffer. That will prevent it from hogging PCI bus.
I use Scisoft Sandra as analyser.
There's a discussion about that onthis page

<font size=-1>[ This Message was edited by: atomic on 2002-01-02 06:45 ]</font>
Micha
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Post by Micha »

wpcredit works with many chipsets. All you need is a corresponding PCR file. The editor shows the content of the chipset and the PCR file holds the information how to interpret that content. The writing of new values itself is same for all boards. Imagine a chipset as a helix. The third pair of DNS, is it cancer or pest or cholera? That you can find in the PCR file.
Well then, happy tweaking and
Happy pulsaring
Micha
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at0m
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Post by at0m »

Sysex on the mobo, haha. Thanks for reminding me of these files, Michu. Gonna check if any exist for my Acorp 6A815EPD.

Will the tweak utility tell me if I'm using the wrong file/chipset combination? Don't wanna mess up my mobo...
Micha
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Post by Micha »

yep, you only can write if the chipset is recognized. Look at the download page at
http://www.h-oda.com
for your chipset file, should be i815.zip.
Hope we'll hear from you in the next time. Else we all know what trouble you're in. :grin:
Good luck and
Happy pulsaring
Micha
P.S.: use File->Register Save as starting point.

<font size=-1>[ This Message was edited by: Micha on 2002-01-02 07:48 ]</font>
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at0m
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Post by at0m »

Geez one guy overclocked his PIII CUSL2 to 1600MHz form 933 originally. There's sick people out there.
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at0m
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Post by at0m »

Some explanation to the overclocker stuff from http://www.h-oda.com/:

You cannot overclock your computer like the guys there , cos the guy has special periferals that you probably do not have: pci cards, memory, disks, and especialy losts of xtra cooling!

Creamware users could use the BIOS tweaks especially to raise PCI performance, and will have to go to access times and latencies rather than frequency boosting. Pulsar is developped to run at 133MHz and creates lots of heat when overclocked. There's different things we, Pulsar users, should take into account. If you clock the PCI to 180MHz or so, you'll create high amount of heat. Pulsar will not follow that frequency, cos it's built for 133MHz operations, as most cards.

You could for example give all pci transaction small buffers, disable PCI mastering for some cards (LAN, AGP) etc.

I plan to change following settings, for LAN: 32clocks latency, busmaster off
(latency is now 128clocks, busmastering on).
128clocks will hog the pci bus, 32 will release the pci bus access quicker for other cards.

Also memory specifications can be different. Memory is determined not only FSB (FrontSideBus frequency). There's different memory handling settings that can speed up the operations on your memory or improve stability. Most BIOS' are standard set to 'most safe' to allow for as much as possible compatibility, not for speed.
Memory could be CL2 or CAS2 latency rated. CL2 means that the memory will has 2 clocks latency, instead of standard 3 cpu cycles.

More information on terminoligy is at Bluelife ->PC Optimisation ->BIOS.

Gonna try what I said above first, I'll let you peoplez know how it goes. I'm on an 815EPD motherboard.

atomic.

<font size=-1>[ This Message was edited by: atomic on 2002-01-02 16:40 ]</font>
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