On 28 Dec, this message from Philippe TEISSIER echoed through cyberspace: >> On 27 Dec, this message from [EMAIL PROTECTED] echoed through cyberspace: >>> too bad there isn't a kernel driver to enable the cache on those cards >>> at boot up under debian, cuz then you wouldn't need bootx, you'd be >>> able to quik ;). >> >> There is, actually. You can specify an l2cr value on the kernel command >> line. Here is mine on my G3-upgraded 7600: >> >> [EMAIL PROTECTED]:~$ cat /proc/cmdline >> root=/dev/sda4 console=ttyS0 l2cr=0xa9000000 console=tty0 >> video=scrollback:64k >> video=controlfb: video=matrox: >> ^^^^^^^^^^^^^^^ > What is the kernel you use ? a patched one or an official release ?
BenH, but that shouldn't make any difference. > I just DL the last stable sources. Where can I find a command line > parameters description ? Nowhere I know of.. there maybe a file under Documentation/ describing some of them, but most probably not all. > For example, the video parameters ... One is for a matrox millenium card, I > think, but the 2 others ? The first one is supposed to use 64k as a scrollback buffer; you can use more or less memory here depending on how far back you want to scroll on the console with shift+pgup/pgdwn The second and third options, through their order, specifiy the order of the internal and Matrox framebuffers: control will be fb0, and matrox will be fb1. If any of those needed options, they would be specified there... but I use none. >> You can also have a look at this page for more info (it's a bit outdated >> by mostly still relevant): >> http://www.cpu.lu/~mlan/linux/dev/g3upgrade.html > I had a look there, and they seems to say that the last 2.4.xxx kernels > include this patch, so it should be OK. I'll test that soon. I would like to > be able to quik :) Yeah, when you don't use MacOS, it's a good solution once you get it working. If you still use MacOS, it's a pain since MacOS will overwrite the OpenFirmware config to boot quik; so you will have to reset that everytime on shutdown in MacOS. >> PS By the way, I suppose you're talking about L2 (level 2) cache, not >> L3? And I also think it's worth a benchmark removing the old L2 cache >> DIMM on the motherboard... > Right, I don't know why I typed L3 instead of L2 ... > Could you detail the last sentence "it's worth ...". Sorry for my english > (I'm a french student still learning english ...) : Does that mean it's > better for performance to remove the old cache ? And if yes, why ? Well, the documentation for my G3 card says to remove the on-board L2 cache DIMM. The reason is that it will be 'degraded' to an L3 cache, but a slow and small cache. So, it _may_ hinder performance more than it helps. Just try it... The point to keep in mind is that in order to make the G3 upgrades work, some _must_ remove the cache, some _must_not_ in order for the upgrade to work. I'd say: if your box works with the cache removed, than do it. Cheers Michel ------------------------------------------------------------------------- Michel Lanners | " Read Philosophy. Study Art. 23, Rue Paul Henkes | Ask Questions. Make Mistakes. L-1710 Luxembourg | email [EMAIL PROTECTED] | http://www.cpu.lu/~mlan | Learn Always. "
