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.
Copyright © 1998, Dr. Dobb's Journal