Date: Fri, 07 Nov 1997 03:52:16 +1030 From: Mike Smith <mike@smith.net.au> To: Chuck Robey <chuckr@glue.umd.edu> Cc: hackers@freebsd.org Subject: Re: >64MB Message-ID: <199711061722.DAA00364@word.smith.net.au> In-Reply-To: Your message of "Thu, 06 Nov 1997 07:40:21 CDT." <Pine.BSF.3.96.971106073452.7018C-100000@picnic.mat.net>
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> On Thu, 6 Nov 1997, Mike Smith wrote: > > > > > > > Speaking of vm86(), why not just use real-mode? It's easier and much > > > better for compatibility while booting. > > > > How do you copy the kernel into memory > 1M in real mode? If you could > > elaborate on this (and how to *stay* in real mode while running over > > 1M, ie. so that the kzip pass and subsequent real-mode startup > > requirements could be met), I'd be *very*happy* > > Huh? Is that the limitation? That's ths crux. That and the fact that our toolchain doesn't generate real-mode code very well, so what we produce runs best in protected mode. We just drop back to real mode to call the BIOS. Check the boot sources for a better picture of what goes on; if you have any ideas, we're always open. 8) mike
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