Unit 7 OS

Question 1

What can each type of code be used as

Answer 1

Machine Code : directly executable by a processor
Assembly Code: directly convertible to machine code
Low-Level Code: minimal abstraction for the processor
High-Level Code: Complete abstraction of the processor

Question 2

What is opcode

Answer 2

Operation Code
Also known as instruction machine code which is the portion of a machine language instruction that specifies the operation to be performed

Question 3

What is a bootstrap compiler

Answer 3

• Written in the language it is intended to compile
• Minimal compiler is used to create the full compiler
• C does this

Question 4

What is a cross-compiler

Answer 4

• Compiler that produces native code for a different platform
• E.g Visual studio for PC can cross-compile ARM64 object code