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From: blk5743 AT yahoo DOT com DOT tw
Newsgroups: comp.os.msdos.djgpp
Subject: Get XMS version code
Date: 17 Nov 2005 03:17:47 -0800
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

hello,
i modify a sample code from xms30 as below
i will get a XMS API handle(XMSH[DWORD] declare in .cpp file)
it will always fail when i run => call [_XMSH] <=
i do not know how to modify this line.
same code if define to 16 bits use( .com type)
it can work well. but i can not combine the .com file with my djgpp
project files.

and i have another problem with segment registers
i want to assign value to es register
i use    * mov ax, 1 -> mov es,ax (assign 1 to es)
or          mov ax, 1 -> push ax -> pop es
both method will fail when the value assign to es

please kindly to help me.
thanks.



[bits 32]
[GLOBAL _GetXMSAddr__Fv]  ;function for other .cpp call
[EXTERN _printf]
[EXTERN _XMSH]   ;unsigned long, declare in another .cpp file
msg  db "No XMS",0ah,0
msg2 db "Get XMS",0ah,0
msg3 db "Get XMS Ver Fail",0ah,0
msg4 db "Get XMS Ver OK",0ah,0
[section .text]
_GetXMSAddr__Fv:
        mov ax,4300h
        int 2fh
        cmp al,80h
        jne NoXMS
        jmp XMS
NoXMS:
        push dword msg
        call _printf
        mov ax, 0
        jmp END
XMS:
        push dword msg2
        call _printf
        mov ax,4310h
        int 2fh
        mov [_XMSH], bx
        mov [_XMSH+2], es

        mov ah,00h
        call [_XMSH]
        cmp ax,0300h
        jne NG
        jmp OK
NG:
        push dword msg3
        call _printf
        jmp END
OK:
        push dword msg4
        call _printf
END:
        ret