nonsensical words \c{-dNAME="my} and \c{name"}.
To get round this, NASM provides a feature whereby, if you begin the
-\c{NASMOPT} environment variable with some character that isn't a minus
+\c{NASM} environment variable with some character that isn't a minus
sign, then NASM will treat this character as the \i{separator
character} for options. So setting the \c{NASMOPT} variable to the
value \c{!-s!-ic:\\nasmlib} is equivalent to setting it to \c{-s
compares the 64-bit (eight-byte) value stored at \c{[mem]} with the
value in \c{EDX:EAX}. If they are equal, it sets the zero flag and
stores \c{ECX:EBX} into the memory area. If they are unequal, it
-clears the zero flag and leaves the memory area untouched.
+clears the zero flag and stores the memory contents into \c{EDX:EAX}.
\c{CMPXCHG8B} can be used with the \c{LOCK} prefix, to allow atomic
execution. This is useful in multi-processor and multi-tasking