Study on the Addressing Mode of Assembly Language Instruction Set of 80C51 MCU

Bao Fa Sun

doi:10.4028/www.scientific.net/AMR.591-593.1511

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 591-593Study on the Addressing Mode of Assembly Language...

Study on the Addressing Mode of Assembly Language Instruction Set of 80C51 MCU

Abstract:

The addressing mode of assembly language instruction set of 80C51 MCU is redefined. The addressing mode is classified according to two standards separately. The addressing mode is the method decrypting operand address in the instruction, or finding the next instruction address. The mode to find the operand address includes direct addressing, register addressing, register indirect addressing and base address plus index indirect addressing. The mode to find the next instruction address includes sequential addressing, base address plus index indirect addressing and relative addressing.