micha@ixos (07/17/90)
John Wilkes wrote: > 5. What is "shadow ram" and do I want it enabled? As I said, I am new to > i386 based systems, and I'm blissfully ignorant of the MS-DOS world. > Anyone who wishes to contribute to my education will earn my undying > gratitude. > > John Wilkes > > wilkes@mips.com -OR- {ames, decwrl, pyramid}!mips!wilkes Shadow RAM is an hardware possibility to copy the slow ROM (e.g. System-BIOS, VGA-BIOS) into fast RAM, deactivate the ROM and activate the RAM write protected. This is only useful for operating systems wich are using the BIOS like MS-DOS. Under UNIX *all* BIOS is disabled. All activities are made by device drivers. The amount of memory, normally 256 or 384K is *lost*, so Shadow-RAM with UNIX is useless. Micha #include "sys/disclaimer.h" + No Paulaner ad anymore. + micha@ixos.uucp + archive-server@unido.uucp +
davidsen@sixhub.UUCP (Wm E. Davidsen Jr) (07/23/90)
In article <1239@ixos.UUCP> micha@ixos () writes: | This is only useful for operating systems wich are using the BIOS | like MS-DOS. Under UNIX *all* BIOS is disabled. All activities are | made by device drivers. The amount of memory, normally 256 or 384K | is *lost*, so Shadow-RAM with UNIX is useless. Sorry, in geeneral that's not correct. The ROMs are *unused* rather than *disabled*. While the 386 can do this there's no need. -- bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen) sysop *IX BBS and Public Access UNIX moderator of comp.binaries.ibm.pc and 80386 mailing list "Stupidity, like virtue, is its own reward" -me