On Sat, Oct 20, 2001 at 02:03:57AM -0700, Naren Devaiah wrote: > > > > Anyone tells me what BIOS shadowing is ? In Windows my S3 > > > Trio 3D/2x card gave pathetic colours till I enabled this > > > in BIOS. > > > > BIOS shadowing is used to increase performance of BIOS calls by mapping > the slower (E)EPROM based BIOS code into a section of faster DRAM area. > > The VRAM (Video RAM) will still be on the video card. It is mapped into > the standard VGA address space 0xA0000 to 0xC0000 always (with/without > shadowing to BIOS) > > Sometimes, even the video BIOS may be shadowed. > > But all this only works if the OS calls the BIOS. > > Linux does not use the BIOS for anything other than during the bootloading > phase. > > In fact, this very reason of not using the BIOS has led to projects like > FreeBIOS that try to put the linux kernel into the (E)EPROM used by the > BIOS. This way, linux has been booted in less than 3 seconds. > > However, not all motherboards/chipsets are supported and also, no more > Windows (because there is no BIOS!) > > -Naren > > --__--__-- ---end quoted text---
Wonderfully explained, Naren ... just floated to FreeBIOS page after a google search recently ... an eye opener. Bish. -- : ####[ Linux One Stanza Tip (LOST) ]########################### Sub : DOS to Unix conversion (#3) LOST #137 DOS text files with ^M can be cleared by pico editor. Load the dos text file in pico, Do a small edit job on it. (e.g. place a space and delete it again) .. Save .. Quit. All ^Ms gone !! ####<[EMAIL PROTECTED]>#################################### : _______________________________________________ linux-india-help mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/linux-india-help
