Date: Sat, 25 Aug 2001 19:24:19 +0300
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "Louis P. Santillan" <lsantil AT calstatela DOT edu>
Message-Id: <4331-Sat25Aug2001192419+0300-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <Pine.GSO.4.21.0108241249520.7726-100000@neptune.calstatela.edu>
	(lsantil AT calstatela DOT edu)
Subject: Re: TSR/ISR Interaction
References:  <Pine DOT GSO DOT 4 DOT 21 DOT 0108241249520 DOT 7726-100000 AT neptune DOT calstatela DOT edu>
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> Date: Fri, 24 Aug 2001 13:27:21 -0700 (PDT)
> From: "Louis P. Santillan" <lsantil AT calstatela DOT edu>
> 
> I meant, can you have the ISR
> receive a ptr to structure (say, thru FS:EBX)?  This structure will also
> contain ptrs (sel/off pairs) to data & methods (callbacks).  Can these
> callbacks actually be called?

If these callbacks are protected-mode procedures, compiled with DJGPP,
you can call these methods with inline assembly, using the lcall
instruction mnemonic.

If those are real-mode procedures, use the library function
__dpmi_simulate_real_mode_procedure_retf.