ARM7 Programming model

How many registers are there in the user or system mode of ARM7?

• 15

• 20

• 17

• 10

What is the purpose of the link register in ARM7?

• To control program status

• To manage stack memory

• To store the program counter value during mode changes

• To hold the address of the next instruction

What does the current program status register (CPSR) hold?

• The stack pointer address

• The link register value

• The status and control of the program

• The address of the next instruction

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Which register is dedicated to fast interrupt requests (FIQ)?

• cpsr

• r8 to r12

• r0

• r15

Why does IRQ have a delay compared to FIQ?

• IRQ registers are common with user mode

• IRQ uses dedicated registers

• IRQ is faster than FIQ

• IRQ does not require saving registers