From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: guillaumelancelin@yahoo.es (Guillaume Lancelin)
Cc: linux-kernel@vger.kernel.org
Subject: Re: Memory access
Date: Tue, 3 Jul 2001 16:33:35 +0100 (BST) [thread overview]
Message-ID: <E15HSBD-0007s3-00@the-village.bc.nu> (raw)
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
> 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
prev parent reply other threads:[~2001-07-03 15:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-03 14:45 Guillaume Lancelin
2001-07-03 14:51 ` Arnaldo Carvalho de Melo
2001-07-03 14:54 ` Brian Gerst
2001-07-03 14:56 ` Eli Carter
2001-07-03 14:57 ` Richard B. Johnson
2001-07-03 15:33 ` Alan Cox [this message]
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