12 May
1998
12 May
'98
2:11 p.m.
On Wed, 13 May 1998, Tony Duell wrote:
However, IMHO it's a lot harder to get a CPU to
tripple-fault than to
simply send a command to the keyboard controller. And you'd have to set
all the other things up no matter how you reset the CPU.
Harder? Microsoft did it all the time without even trying :-)
It only takes a few instructions, and doesn't require any slow I/O, so
it's a handy technique if you ever have to write a new mode switching O/S
for the 286.
-- Doug