F27CS Quiz 2

Which of these is the Register that holds address of next instruction to be fetched from store during during fetch-execute cycle is called

• current instruction register
• program counter
• sequence instruction register
• memory data register

Instructions that are programmed to make decisions based on a condition are termed as

• Branching Instructions
• Data Transfer Instructions
• Arithmetic Instructions
• Logical Instructions

The Instruction Register (IR) is used to store a copy of the instruction just fetched

• True
• False

During which stage is the Instruction Register (IR) set?

• Execute stage
• Operation decode
• Operand fetch
• Instruction fetch

How many instructions can a single-core CPU process at a time?

• One
• Many
• It does not process instructions

An interrupt breaks the sequence of instructions execution by the processor and diverts its execution to

• Interrupt service routine
• Counter word register
• Execution unit
• Control unit

Interrupts can happen during an execution of a program if

• An error happens (such as division by 0 or addressing error)
• Software requested interrupt
• I/O devices requested interrupt
• All of the previous

The primary goal of this type of CPU architecture is to use simple instructions that can be executed within one clock cycle (Emphasis on software)

• RISC

• CISC

• Mainframe

• Microprogram

In ARM Aarch32, R14 is a:

• Special register (Link register)

• General purpose register

• Special register (Program Counter)

• Special Register (Stack pointer)

In ARM instruction add r1, r2, #13 means

• r1 = r2 + 13

• r1 = r2 * 13

• r1 + 13 = r2

• r1 + r2 = 13