From: Joakim Svensson <Joakim DOT Svensson AT mbox200 DOT swipnet DOT se>
Newsgroups: comp.os.msdos.djgpp
Subject: Physical_address_mapping   needs help
Date: Fri, 15 Aug 1997 00:04:25 +0200
Organization: BuggerSoft
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I cant get this to work. The
"_dpmi_free_physical_address_mapping(&info)"
returns -1.

please help
this is what i do. 
...
	__dpmi_meminfo info;
	info.size=xxx;
	info.address=xxx;
...
	if(__dpmi_physical_address_mapping(&info) == -1) {exit(2);}
        info.address=(info.address + __djgpp_conventional_base);
// i cant get this line to work, 
        if(__dpmi_free_physical_address_mapping(&info) == -1) {exit(3);}
...


I use it to address the video mem. The mapped linear address works fine,
but i cant free it.