July 2025
Beginner
528 pages
13h 18m
English
Content preview from The Microprocessor
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CHAPTER 5Arithmetic Operations
5.1 ARITHMETIC INSTRUCTIONS
The arithmetic instructions are of the form:
<operation> Rd, op1, op2Here, op1 is a register (Rn) and op2 is either a register (Rm) or an immediate value (imm). Another form of arithmetic instruction is:
<operation> Rdn, op2In this case, Rdn serves as op1 as well as the destination, while op2 (Rm or imm) remains the second operand.
Cortex-M0 uses a limited instruction set for simplicity, where most operations uses only registers R0 to R7 as operands. Additionally, ...
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