Is there any instruction in assembly lauguage
called "btrl"and what does it
mean? 'because I am confused with a line of
"__asm__ __volatile__( LOCK_PREFIX "btrl
%1,%0":"=m" (ADDR):"ir" (nr));"in
smp.c, where LOCK_PREFIX is pre-defined in bitop.c
to be "lock;" in smp
condition and nothing("") otherwise.
And second question is can anybody tell me where
can I find specification
for the 82489 chip?
Thanks a lot!
Zheng Can.
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