LOADALL vs. v86
Posted: Thu Oct 24, 2002 6:24 pm
what's better?
LOADALL or v86? loadall takes 105 clock ticks.
Thank you,
LOADALL or v86? loadall takes 105 clock ticks.
Thank you,
a.f.a.i.k. the loadall instruction (which is undocumented) was only available on the 80286 and maybe on some 80386...
http://x86.ddj.com/articles/loadall/tspec_a3_doc.htm
On hardware from 486, pentium, etc. it seems (according to the above article) that the LOADALL instruction is emulated by the bios, so i don't think it would be easier to reuse as you'll probably have to rewrite that emulator as well once you've re-programmed exceptions table (IDT)