From 4355521828113a9b817e20f782a196d1d83e18a8 Mon Sep 17 00:00:00 2001 From: mickey Date: Mon, 21 Apr 1997 19:40:44 +0000 Subject: [PATCH] some comments on recent stuff --- sys/arch/i386/stand/README | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/sys/arch/i386/stand/README b/sys/arch/i386/stand/README index 36c37aad734..888dc82f803 100644 --- a/sys/arch/i386/stand/README +++ b/sys/arch/i386/stand/README @@ -1,4 +1,4 @@ -$OpenBSD: README,v 1.4 1997/04/11 19:21:50 weingart Exp $ +$OpenBSD: README,v 1.5 1997/04/21 19:40:44 mickey Exp $ Ok, just a couple quick pointers to people hacking on this stuff. These @@ -87,3 +87,16 @@ other hand, it checksumed ok though, so there might be a small bug in the libz stuff. Also, I don't understand libz, but I do know that things work withouth -DSAVE_MEMORY, and don't with it defined. + +Mon Apr 21 15:25:42 EDT 1997 +---------------------------- + +Now memory limits are not in concern. No any restrictions on placement +and sizes of code/data. It would be an idea to move PMMM code from kernel +into /boot to use low memory somehow, then remember that upper 64k are +used by apm, so do not grow too much... Low 64k are used for real mode +IDT, BIOS data, stack for /boot, so stack is big enough (about 60k). +All the magic w/ prot-real mode interface now in one place . +BIOS (and DOS soon) interrupt entry points are now just as simple as +they are in real mode (just use a macro BIOSINT, which shifts int# +by 0x20, that all! ;). -- 2.20.1