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From: "Rod Pemberton" <donthave AT noreply DOT bit>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Get XMS version code
Date: Mon, 21 Nov 2005 00:09:58 -0500
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<blk5743 AT yahoo DOT com DOT tw> wrote in message
news:1132546146 DOT 464807 DOT 81190 AT g44g2000cwa DOT googlegroups DOT com...
> Thanks for Rod Pemberton's reply
>
> i had tried for these 2 problem again.
>
> First problem: should i ingnore any segment value(es,ds...)
> when i use 32 bits compiler
>
> Second problem:
> i re-write my code again. but it still fail when i excute on

From your assembly, I think, the code I wrote (below) is what you want.
Or, at least, it is somewhat similar...

Rod Pemberton


#include <stdio.h>
#include <dpmi.h>
    __dpmi_regs r;

int main(void)
{
    r.x.ax = 0x4300;
    __dpmi_int (0x2f, &r);
    if(r.h.al!=0x80)
    { /* no XMS */
         printf("1\n");
    }
    else
    { /* XMS */
         printf("2\n");
         r.x.ax = 0x4310;
        __dpmi_int (0x2f, &r);
         r.h.ah=0x00;
         r.x.cs=r.x.es;
         r.x.ip=r.x.bx;
         __dpmi_simulate_real_mode_procedure_retf(&r);
//         __dpmi_simulate_real_mode_procedure_iret(&r);
         if (r.x.ax==0x0300)
         { /* OK */
           printf("3\n");
         }
         else
         { /* NG */
           printf("4\n");
         }
    }

return(0);
}