3dfx Archive - /BIOS settings questions/

LuxKiller65

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/BIOS settings questions/
20.04.05 at 17:29:56

I have some questions about settings in the BIOS.

/1/ What is the PCI Bus Mastering? It is set on disabled by default.

/2/ What is the PCI VGA Palette Snooping? Is also disabled by default.

Should I enable them two?

/3/ What is AGP Aperture Size? Got it with my BIOS update, before there wasn't such option. Guess it's 64 MB by default. Dangerous if I put an higher value?

Thanks and good evening!

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paulpsomiadis

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Re: /BIOS settings questions/
Reply #1 - 20.04.05 at 18:07:53

PCI Bus mastering definition: -

http://www.pcguide.com/ref/mbsys/buses/types/pciIDEBM-c.html

RECOMMENDED = ENABLE

(providing you have a mainboard and hdd / cd / dvd drives that are Ultra-ATA capable. i.e. ATA33/66/100/133)

VGA Palette Snoop definition: -

http://www.pcguide.com/ref/mbsys/bios/set/pciSnoop-c.html

RECOMMENDED = DISABLE

AGP Aperture size definition: -

http://www.ocfaq.com/article.php/overclocking/vidcard/43

RECOMMENDED = HALF of your total RAM

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« Last Edit: 20.04.05 at 18:10:24 by paulpsomiadis »

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Chosen_One Senior Member Offline Keeper of the BIOS-files... Posts: 499 Germany Gender:	Re: /BIOS settings questions/ Reply #2 - 20.04.05 at 20:48:32 AGP Aperture size... if you use a radeon and you get an instable machine maybe setting this value down to 32mb can fix it.... 64mb, 128mb....no difference in speed....no matter whats your value....
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LuxKiller65 God Member Offline Posts: 680 Luxembourg Gender:	Re: /BIOS settings questions/ Reply #3 - 20.04.05 at 21:49:31 Actually, it's about the ATI on the motherboard, which is disabled, so it doens't make much difference. But for the BUS Mastering, I think I have UDMA (Ultra DMA) and Enhanced DMA. So setting it on will be ok right?
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gamma742 God Member Offline 3Dfx Gamer Posts: 1668 San Diego, CA USA Gender:	Re: /BIOS settings questions/ Reply #4 - 21.04.05 at 07:21:22 Not sure if I can link to this one... http://www.rojakpot.com/default.aspx?location=7&var1=18 This was very helpful to me. Scroll down and look for the [/size] FREE Access To The BIOS Optimization Guide [size=13]
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LuxKiller65 God Member Offline Posts: 680 Luxembourg Gender:	Re: /BIOS settings questions/ Reply #5 - 21.04.05 at 15:20:12 Hum well thanks... Compaq BIOSs are very limited and that's a shame, but apart from that I really think they are pretty good.
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voodoo5500 Full Member Offline Proud 3dfx gamer Posts: 197 Canada Gender:	Re: /BIOS settings questions/ Reply #6 - 21.04.05 at 19:40:35 If you are using a voodoo for the video card, set the AGP Aperture as low as possible (4 MB). Good link for motherboard bios settings with voodoo video cards: http://www.xs4all.nl/~jfeelder/voodoousers/performancebios.html
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gdonovan YaBB Administrator Offline Infernal Collector Posts: 2361	Re: /BIOS settings questions/ Reply #7 - 21.04.05 at 23:03:15 Quote: If you are using a voodoo for the video card, set the AGP Aperture as low as possible (4 MB). I always have mine set to 64MB with no problems.
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LuxKiller65 God Member Offline Posts: 680 Luxembourg Gender:	Re: /BIOS settings questions/ Reply #8 - 22.04.05 at 06:57:03 It can't be that of my Voodoo, since it's a PCI one. It's that of the integrated ATI chip. If I always have my PC detecting a new CPU and setting the time back to 00:00, is the problem coming from the battery (the one on the mobo, often from Sony)?
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paulpsomiadis God Member Offline -=3Dfx still rox!=- Posts: 2011 Newcastle U.K. Gender:	Re: /BIOS settings questions/ Reply #9 - 22.04.05 at 21:33:42 Yup, dead battery - just pop out the old one and go buy a replacement to pop back in afterward!
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LuxKiller65 God Member Offline Posts: 680 Luxembourg Gender:	Re: /BIOS settings questions/ Reply #10 - 23.04.05 at 10:02:21 Did it yesterday. Now all seems back to normal. Actually, on my QDI jumperless motherboard, I can set the CPU speed directly from the BIOS menu! Weird!
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paulpsomiadis God Member Offline -=3Dfx still rox!=- Posts: 2011 Newcastle U.K. Gender:	Re: /BIOS settings questions/ Reply #11 - 23.04.05 at 23:27:14 Nah, pretty normal - I've had lots of jumperless mainboards that have CPU settings in the BIOS.
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LuxKiller65 God Member Offline Posts: 680 Luxembourg Gender:	Re: /BIOS settings questions/ Reply #12 - 24.04.05 at 08:21:32 Yes, but I have a Pentium I MMX @ 233MHz and it was running @ 100MHz until yesterday!
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paulpsomiadis God Member Offline -=3Dfx still rox!=- Posts: 2011 Newcastle U.K. Gender:	Re: /BIOS settings questions/ Reply #13 - 24.04.05 at 21:15:58 Jumperless Pentium boards will default to 100MHz by default as a safety feature - so, if like yours, the CMOS battery fails...the system will still boot!
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LuxKiller65 God Member Offline Posts: 680 Luxembourg Gender:	Re: /BIOS settings questions/ Reply #14 - 24.04.05 at 22:04:05 Well, it's not only a Pentium board actually. It showed the message "CMOS Cheksum error" or something like that, and then went back to the default setting and kept on finding a mysterious new CPU... but Windows worked fine... PCs... what a mystery
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