AGP aperture help

[gfreehed]

Hey I was running through my dmesg and I found the following line:

agpgart: AGP aperture is 128M @ 0xf0000000

Could anyone tell me what the hex value at the end means??
I have a radeon 9000 using kernel v. 2.4.22. The board has an 8x agp slot, but the card is 4x.

3d accelleration is working using xfree-xdm drivers.

This is mostly just for curiosity.

[bwkaz]

It's the physical address of the AGP aperture, according to your graphics card's GART.

When a bit pattern between 0xf0000000 and 0xf7ffffff (which is that address plus 128MB) is requested as a read or write by the computer, it comes from the graphics card.

I think...

[gfreehed]

Thanks.

Does anyone know how to tell what speed that AGP card is running at? By speed I mean 1x 2x 4x ...

[Vador8088]

Check the BIOS man :)

One way is to simply look at your BIOS setup menu. You should find the AGP setting somewhere in there.

And of course you need to know what speeds your Video Card is capable off. This should be in the documentation of the card. Or look for the product info on your vendors web site.

If your card is capable of say... 1,2 4 and 8X then set your BIOS respectively

Im sure there are other ways, I just find a quick peek at the BIOS setting the easiest