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Subject: Re: Memory access
To: guillaumelancelin@yahoo.es (=?iso-8859-1?q?Guillaume=20Lancelin?=)
Date: Tue, 3 Jul 2001 16:33:35 +0100 (BST)
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20010703144532.11007.qmail@web4201.mail.yahoo.com> from "=?iso-8859-1?q?Guillaume=20Lancelin?=" at Jul 03, 2001 04:45:32 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> My question: is the kernel using or protecting this area of the memory,
> and is there a way to deprotect it??? (how dangerous!)

The kernel maps ISA space at different addresses. What address and how it is
accessed depends on the CPU and system

	isa_readb/readw/readl(addr)
	isa/writeb/writew/writel(value,addr)

to read/write 8,16,32 bit values 


	
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