RBIL61 - INT 31 - DPMI 0.9+ - DISCARD PAGE CONTENTS {protected mode}

INT 31 P - DPMIsee DOS Protected-Mode Interface 0.9+ - DISCARD PAGE CONTENTS
	AX = 0703h
	BX:CX = starting linear address
	SI:DI = number of bytes to mark as discarded
Return: CF clear if successful
	CF set on error
	    AX = error code (DPMIsee DOS Protected-Mode Interface 1.0+) (8025h) (see #03143)
Notes:	this function is advisory, and may be ignored by DPMIsee DOS Protected-Mode Interface implementations
	partial pages will not be discarded
SeeAlso: AX=0701h,AX=0702h