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Date:	Tue, 15 Mar 2011 16:20:02 +1000
From:	Jason Hood <jadoxa AT yahoo DOT com DOT au>
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Subject:	Re: csdpmi7 not working on virtualbox, how use dosmemget with seg
	ofs from int21h?
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On 15/03/2011 8:52, Jim Michaels wrote:

> I don't take to hand-waving.  I need concrete examples.  code it.

I showed you how, back on the third.  Here it is again (still untested).

#include <go32.h>
#include <dpmi.h>
#include <sys/farptr.h>

extFAT32FreeSpaceStructure extFAT32FreeSpace;
__dpmi_regs r;

_farpokew(_dos_ds, __tb+2, 0); // initialise the version
dosmemput(path, strlen(path)+1, __tb+sizeof(extFAT32FreeSpaceStructure));
r.x.ds = r.x.es = __tb >> 4;
r.x.dx = (__tb & 0x0f) + sizeof(extFAT32FreeSpaceStructure);
r.x.di = __tb & 0x0f;
__dpmi_int(0x21, &r);
dosmemget(__tb, sizeof(extFAT32FreeSpaceStructure), &extFAT32FreeSpace);

That points DS:DX and ES:DI to the transfer buffer.  The path is copied
to the buffer, leaving room for the structure.  After executing the int,
the structure is copied from the transfer buffer.  Simple, don't know
what your problem is.

-- 
Jason.

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