From: Stas Sergeev <stssppnn@yahoo.com>
To: linux-msdos@vger.kernel.org
Cc: John Elliott <jce@seasip.demon.co.uk>
Subject: Re: DPMI: Interrupt vector overwritten
Date: Thu, 17 Oct 2002 07:51:50 +0400 [thread overview]
Message-ID: <3DAE33D6.8010508@yahoo.com> (raw)
Hello.
John Elliott wrote:
> They cause
> dosemu to abort if DPMI function 0x300 is used to call interrupt 0xE0
> or higher;
What exactly interrupt from this range do
you want to execute?
> is this correct,
Of course it is not. If your program installs
the realmode handler for that ints, it will
just crash dosemu with that code.
It was even worse when this was done not only
for 0x300, but also for 0x301 and 0x302, so it
crashed dosemu *randomly* because bx is meaningless
for those.
I moved it under "if (inumber == 0x300)" rather
than remove, because it was a hard times and it
was nearly impossible to get included something
more than an absolutely trivial patch. Removal
patch would just have been ignored most likely,
so the compromiss was to put it under "if".
Now, as the devel branch is in progress, the
things are much better.
> and if so, why is it doing it?
For no reasons, feel free to remove it if it hurts
you, which is still strange. Why do you need that
vectors?
next reply other threads:[~2002-10-17 3:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-17 3:51 Stas Sergeev [this message]
2002-10-17 5:08 ` DPMI: Interrupt vector overwritten Bart Oldeman
[not found] <no.id>
2002-10-18 19:53 ` John Elliott
-- strict thread matches above, loose matches on Subject: below --
2002-10-16 22:07 John Elliott
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