Instruction sets and addressing modes @357@

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The way any operand is selected during the program execution is dependent on the addressing mode of the instruction. The purpose of using addressing modes 4 Oct 2017 20 Sep 2017 8 Feb 2016 3 Jan 2013 William StallingsComputer Organizationand Architecture8th EditionChapter 11Instruction Sets:Addressing Modes and Formats. Instruction Sets: Addressing Modes and. Formats. Computer Organization and Architecture. Instruction Set Design. • One goal of instruction set design is to.Addressing Modes. Addressing Modes– The term addressing modes refers to the way in which the operand of an instruction is specified. The addressing mode specifies a rule for interpreting or modifying the address field of the instruction before the operand is actually executed. Addressing modes: • • • • • • • Immediate Direct Indirect Register Register indirect Displacement Stack The Actual data is stored as an operand in an Addressing modes are an aspect of the instruction set architecture in most central processing unit (CPU) designs. The various addressing modes that are defined in a given instruction set architecture define how machine language instructions in that architecture identify the operand(s) of each instruction. Indirect Addressing. • Memory cell pointed to by address field contains the address of the operand. • EA = (A). —Look in A, find address (A) and look there for