Messages in this thread | | | Date | Wed, 16 Jan 2008 20:08:29 +0000 | From | Alan Cox <> | Subject | Re: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. |
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> If the hardware required an intermediate junk I/O, that would be a > reason to do one, but it doesn't, does it? It requires a delay. It's > written thus in all of the application notes.
And the only instruction that is synchronized to the bus in question is an I/O instruction.
> Wrong again. Of course one knows how long the delay should be. The bus > speed is known.
Wrong again. ISA bus speed is neither defined precisely, nor visible in a system portable fashion.
I'm so glad you have nothing better to do than troll, if you actually wrote code I'd be worried it might get into something people used.
Alan
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