Re: hooking int 21?

[Stuart Axon <appg18@dsl.pipex.com>]

Thanks, discovered the can_revector_int21 too, which seemed to help... 
Now tho, can't seem to return a cleared carry flag: if I temporarily put
 ds_printf("CF=%x\n",REG(eflags)&&CF);
in int21() after my function call I can see
CF=0
so it's still clear, but by the time it gets back to dos its set, is
there anything I need to be aware of in order to preserve CF?

On Sun, 2003-01-26 at 23:07, Bart Oldeman wrote:
> On 26 Jan 2003, Stuart Axon wrote:
> 
> > Hello, I want to handle a function of int21 in dosemu, but can't see
> > where to put the code; int21() in int.c is only for when debugging...
> > but I can't see where for normal execution..?
> 
> Yes, int21() only traps in DOSEMU for debugging, and some hooks
> for the redirector. Everything else is handled by the DOS you're running
> in DOSEMU.
> 
> But of course you can do what you like in int21() or ms_dos() for that
> matter.
> 
> Bart
> 
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