Why does mode in arm in cpsr have 5 bits instead it can have only 3 bits to define all the 7 modes ?

why does processor mode in cpsr in avr have 5 bits although we have 7 modes which we can define in 3 bits ?

Suresh

• Jun 7th, 2015

2 bits reserved for future use

dileep

• Sep 30th, 2013

Avr= advance virtual risc

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