Category: <b>DOS extenders</b>
<br>Flags: available only in protected mode<p>
<pre><b>INT 31 - DPMI 0.9+ - PHYSICAL ADDRESS MAPPING</b>

	AX = 0800h
	BX:CX = physical address (should be above 1 MB)
	SI:DI = size in bytes
Return: CF clear if successful
	    BX:CX = linear address which maps the requested physical memory
	CF set on error
	    AX = error code (DPMI 1.0+) (8003h,8021h) (see <a href=../../it/43/31.html>#03143</a>)
Notes:	implementations may refuse this call because it can circumvent protects
	the caller must build an appropriate selector for the memory
	do not use for memory mapped in the first megabyte
SeeAlso: AX=0002h,AX=0508h,AX=0509h,AX=0801h,INT 21/AX=250Ah,INT 21/AX=EB05h
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