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From:	Eph <t DOT ephraim AT gmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	calling a RM function which is placed below 1 MB
Date:	Wed, 23 Jul 2008 05:21:53 -0700 (PDT)
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Hey,

I've problems to get a call to
__dpmi_simulate_real_mode_procedure_retf_stack working correctly.
My problem is, that I need to call a 16Bit real Mode function placed
in Memory below 1MB, which expects three parameters to be placed on
the RM Stack.(see comments in the code).

Below the code, how I tried to use the function:

---------------
	__dpmi_regs regs;
	struct {
		unsigned long u1;
		unsigned long u2;
		unsigned long u3;
	} stack;

	memset(&stack, 0, sizeof(stack));

	stack.u1 = parm1; // expected at bp[14]
	stack.u2 = parm2; // expected at bp[10]
	stack.u3 = parm3; // expected at bp[06]

	memset(&regs, 0, sizeof(__dpmi_regs));

	regs.x.cs = seg; // segment of the function entry
	regs.x.ip = ofs; // offset of the function entry
	__dpmi_simulate_real_mode_procedure_retf_stack(&regs, sizeof(stack) /
2, &stack);
---------------

What am I doing wrong? Can anyone please point it out!

Ciao Ephraim

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