MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -ARM processors have 37 registers. The registers are arranged in partially overlapping banks. There is a different register bank for each processor mode. The banked registers give rapid context switching for dealing with processor exceptions and privileged operations.

Detailed explanation-2: -ARM processors, with the exception of ARMv6-M and ARMv7-M based processors, have a total of 37 registers, with 3 additional registers if the Security Extensions are implemented, and in ARMv7-A only, 3 more if the Virtualization Extensions are implemented. The registers are arranged in partially overlapping banks.

Detailed explanation-3: -According to the ARM Reference Manual, there are 30 general-purpose 32-bit registers, with the exception of ARMv6-M and ARMv7-M based processors. The first 16 registers are accessible in user-level mode, the additional registers are available in privileged software execution (with the exception of ARMv6-M and ARMv7-M).

Detailed explanation-4: -ARM7TDMI has 37 registers (31 GPR and 6 SPR). All these designs use a Von Neumann architecture, thus the few versions containing a cache do not separate data and instruction caches.

Detailed explanation-5: -Registers in AArch64-general-purpose registers There is a separate set of 32 registers used for floating point and vector operations.