Region Management

By Linden deCarmo

Dr. Dobb's Journal July 1998

Mov GPRM0, SPRM20 	; get the region code of the player
NE  GPRM0, 1 	; If region code is not exactly ONE
GOTO    Failure	; then either this is the wrong player or 
		;     the user hacked it.

Example 3: Region code checks in content. This sample verifies that the DVD player running the content can play Region One -- and only Region One -- content by ensuring that only one bit in the region control register is set. If multiple regions are enabled, it will fail.

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