Thread: Garmin eTREX 20 working as an eTREX 30

Just wondering, what happens if we make MOVS R1,#1 or MOVS R1,#5, which also corespond to eTrex 30 (this fact can be seen at sub_801FAFAA).

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BTW, MOVS R0, R0 is not a good way to insert a NOP instruction, as it may affect flags in CPSR register.