Message-Id: <5.0.2.1.2.20020608134608.009e4050@pop.gmx.net>
X-Sender: martinSteuer AT gmx DOT de@pop.gmx.net
X-Mailer: QUALCOMM Windows Eudora Version 5.0.2
Date: Sat, 08 Jun 2002 14:25:28 +0200
To: djgpp AT delorie DOT com
From: Martin Steuer <martinSteuer AT gmx DOT de>
Subject: Question about djgpp's int-wrapper
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
Reply-To: djgpp AT delorie DOT com

Hi folks,

While examining the source of the wrapper in gopint.c I found that it does 
not issue a 'sti' before returning with 'iret'.
So I wonder if this is ok, as the DPMI Spec. says that 'popf' and thus also 
'iret' may not modify the interrupt flag, wouldn't this leave the 
interrupts disabled?

I realize that the wrapper is also written for software interrupts where 
the interrupts aren't disabled. Then of course this is the right behaviour, 
but it would mean that one must issue a 'sti' within your interrupt handler 
if the wrapper is used for hardware interrupts. Is this right?

Please tell me if i'm mistaken.