[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] intel agp card support 2
On Wed, 5 Jan 2005, Stijn De Weirdt wrote: > More About the Kernel From Power-On to Shell prompt When the power is > turned on, the CPU can recognizes only first 8K of ROM and RAM and the > on-chip RAM are not defined. The address of the 8K of ROM starts from > 0x0. First, the reset vector is taken at address 0x04 and the CPU starts > executing instructions from that address specified by reset vector. The > bootup routine(arch/m68knommu/kernel/head.S) initializes the on-chip RAM > and copies the instructions that initialize RAM and ROM to the onchip > RAM and branches to the onchip RAM. After finishing setting up RAM and > ROM, it jumps back to the ROM(now, ROM's starting address is changed to > 0xc00000). Memory blocks are configured as in the table. this is just 68k, i386 is utterly different. > > I also vaguely remember you can try to invoke X and tell it to NOT try to > > run the vga bios, have you tried that? there is no real need to run it. > from man i810 on my system: > The driver makes use of the video BIOS to program video modes for the > 830M and later. This limits the video modes that can be used to those > provided by the video BIOS, and to those that will fit into the amount > of video memory that the video BIOS is aware of. > (mine is the 865G) yes, but bios has done that. I have started X on several cards and told it not to run the vga bios and it works on some, not on others. ron ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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