Question

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)

I had been asked this question in final exam.

I need to ask this question from Microcontroller (ARM 7) in section Prototyping Embedded Devices of IOT

Answer 1

Correct answer is (c) 37 registers(31 GPR and 6 SPR)

The 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.