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ARM7

sibin thomas
Note: This was originally posted on 28th November 2011 at http://forums.arm.com

i have a doubt related to ARM7TDMI.
in ARM7 architecture, the lower 5bits of CPSR register is MODE bits. we have 7modes in ARM7. when these 7 modes can be specified using 3bits, why 5bits have been set for mode selection?
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