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310002

Category: DOS extenders
Flags: available only in protected mode

INT 31 - DPMI 0.9+ - SEGMENT TO DESCRIPTOR

	AX = 0002h
	BX = real mode segment
Return: CF clear if successful
	    AX = selector corresponding to real mode segment (64K limit)
	CF set on error
	    AX = error code (DPMI 1.0+) (8011h) (see #03143)
Notes:	multiple calls for the same real mode segment return the same selector
	the returned descriptor can never be modified or freed
	not supported by MS Windows 3.0 in Standard mode

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  Copyright 2000   by Ralf Brown     Updated Jul 2000