Christer Weinigel wrote:
out 80h, al is only two bytes. Any alternative that has been suggested
in this discussion will use more space. mov dx, alt_port; out dx, al
will be larger, a function call will definitely be a lot larger. People
have been making changes to the kernel to save a couple of hundred
bytes of text size.
If text size becomes a problem in this case, then we can use an
alternatives-like mechanism to fix up the kernel. However,
realistically this probably should be a function call *combined with*
the out and in; that reduces the impact somewhat.
-hpa
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