Date: Sun, 2 Apr 2000 10:19:28 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender: eliz AT is
To: batchex <thedark1NOthSPAM AT phreaker DOT net DOT invalid>
cc: djgpp AT delorie DOT com
Subject: Re: HELP! : Debugging a c/asm mixed programs
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On Sat, 1 Apr 2000, batchex wrote:

> >Please post the relevant info, don't keep secrets from us.  What
> >exception(s) does FSDB ``throw'', any register dumps, other
> relevant
> >phenomena--all this is required to offer you adequate help.
> What I meant is FSDB 'reports' an exception (in a red box at the
> center of the screen).

This is expected behavior when you step through INT NN instructions which 
invoke DPMI functions.  I don't think FSDB can do it; GDB can.  In FSDB, 
you should put a breakpoint somewhere after the INT NN instruction and 
then press F9 instead of stepping.  After the program hits the 
breakpoint, you can resume the stepping.

> >Also, please tell what version of DJGPP are you using.  The debug
> >support has changed a lot in v2.03, with lots of bugs fixed, so if
> >you use older versions, please upgrade.
> Hmm I don't know for sure. I think it's 2.02, but the GCC is
> 2.8.1.

If you indeed have DJGPP v2.02, I suggest to upgrade to v2.03 urgently.  
The debug support in v2.03 is much better.

The version of the compiler is not important, you can keep 2.8.1 if you 
want.

> >Info about your development platform (hardware, OS, and any
> >non-standard software) might also be relevant.
> >
> Pure MS-DOS environment.

Is the DPMI server CWSDPMI or something else?