Table of Contents
- 1 Why is instruction set architecture important?
- 2 What is the purpose of a set instruction?
- 3 What is meant by instruction in computer architecture?
- 4 What is branch instruction example?
- 5 What long term factors must designers of a new computer architecture take into consideration during the design process?
- 6 How are instruction set architectures measured?
- 7 Which of the following is an example of 2-operand instruction?
Why is instruction set architecture important?
Why the ISA Is Important? Understanding what the instruction set can do and how the compiler makes use of those instructions can help developers write more efficient code. It can also help them understand the output of the compiler which can be useful for debugging.
What is the purpose of a set instruction?
The instruction set, also called ISA (instruction set architecture), is part of a computer that pertains to programming, which is more or less machine language. The instruction set provides commands to the processor, to tell it what it needs to do.
What happens when branch instruction comes in the program?
Mechanically, a branch instruction can change the program counter (PC) of a CPU. The program counter stores the memory address of the next instruction to be executed. Therefore, the next instruction executed is the instruction after the branch instruction. Therefore, the flow of control is unchanged.
What are the instruction set architecture and its types?
instruction set risc cisc misc vliw Reduced Instruction Set Computer (RISC) Complex Instruction Set Computer (CISC) Minimal instruction set computers (MISC) Very long instruction word (VLIW)
What is meant by instruction in computer architecture?
An instruction is an order given to a computer processor by a computer program. In a computer’s assembler language, each language statement generally corresponds to a single processor instruction.
What is branch instruction example?
For example, a branch instruction might be “If the result of the last ALU operation is negative, jump to location A in the program; otherwise, continue with the following instruction.” Such instructions allow…
Why is branching important in programming?
Branching is used in version control and software management to maintain stability while isolated changes are made to code. Branching facilitates the development of bug fixes, the addition of new capabilities and the integration of new versions after they have been tested in isolation.
What are the two key factors to consider when designing any piece of architecture?
Below are some of the things that an architect might think about first before making the final draft.
- Geography, Climate, and Commercial Stair Design. The geography of a place is an essential factor in architecture.
- Religion, Technology, and Culture.
- Imagination and Style.
What long term factors must designers of a new computer architecture take into consideration during the design process?
In designing a computer today, the most important considerations are usually performance and cost. Secondary metrics, which may vary in importance, include fault tolerance, power, and environmental factors such as size, cooling, and noise.
How are instruction set architectures measured?
Instruction set architectures are measured according to: • Main memory space occupied by a program. • Instruction complexity. • Instruction length (in bits). • Total number of instructions in the instruction set. 6 5.2 Instruction Formats In designing an instruction set, consideration is given to: • Instruction length.
What factors are considered in designing an instruction set?
In designing an instruction set, consideration is given to: • Instruction length. – Whether short, long, or variable. • Number of operands. • Number of addressable registers. • Memory organization. – Whether byte- or word addressable. • Addressing modes. – Choose any or all: direct, indirect or indexed. 7
How many ways can you build an instruction set?
There are an infinite number of ways we can build instruction sets to achieve the above, so we will also need to make some other design decisions along the way. However, any design decision which we make then becomes a constraint which limits all our other design decisions.
Which of the following is an example of 2-operand instruction?
Examples of 2-operand instructions include: LOAD R3, 4000, i.e. get the value from memory location 4000 and load it into register R3. SAVE R4, 5000, i.e. write R4’s value out to memory location 5000. SET R6, 23, i.e. set R6 to the literal value 23 (not the value at location 23). INCR R4, i.e. increment the value in R4.