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How many registers are there in ARM7?

a) 35 register( 28 GPR and 7 SPR)
b) 37 registers(28 GPR and 9 SPR)
c) 37 registers(31 GPR and 6 SPR)
d) 35 register(30 GPR and 5 SPR)

Answer: c
Explanation: ARM7TDMI has 37 registers(31 GPR and 6 SPR). All these designs use a Von Neumann architecture, thus the few versions comprising a cache do not separate data and instruction caches.

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