From: Ondrej Zary <linux@rainbow-software.org>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Debugging APM - cat /proc/apm produces oops
Date: Sun, 23 Jul 2006 16:41:33 +0200 [thread overview]
Message-ID: <200607231641.33495.linux@rainbow-software.org> (raw)
In-Reply-To: <200607231630.53968.linux@rainbow-software.org>
On Sunday 23 July 2006 16:30, Ondrej Zary wrote:
> I've tried calling the APM 0x530A function from DOS (real mode, int 15h)
> and single-stepping the BIOS APM code (using good old user-friendly Turbo
> Debugger). Noticed some OUTs to 0xB1 (or something like that), then some
> PCI accesses (0xCF8 and 0xCFC) and then IP ended in area of all zeros. When
> I step over the int 15h call, it works fine - returns correct info.
Sorry, this was my bad. It works fine even when single stepping. I've made a
mistake and stepped over the ending int 20h instruction of my .com program...
I'm probably going to write down complete sequence of instructions which get
executed during the call.
--
Ondrej Zary
next prev parent reply other threads:[~2006-07-23 14:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-23 14:30 Debugging APM - cat /proc/apm produces oops Ondrej Zary
2006-07-23 14:41 ` Ondrej Zary [this message]
2006-07-23 15:06 ` Stephen Rothwell
2006-07-23 16:35 ` Ondrej Zary
2006-07-24 21:51 ` Ondrej Zary
2006-07-25 20:04 ` Ondrej Zary
2006-07-25 19:15 ` Alan Cox
2006-07-25 20:11 ` Ondrej Zary
-- strict thread matches above, loose matches on Subject: below --
2006-07-25 7:46 Chuck Ebbert
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