Instruction format and addressing modes

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instruction format in computer architecture

The instruction format for Immediate Addressing Mode is shown in the Figure 4.1. Direct Addressing: A very simple form of addressing is direct addressing, in Instruction Formats. One address. Two address. Zero address. Three addresses and comparison. 2. Addressing modes with numeric examples. 3. Program control. 4. Direct Addressing Mode- · The address field of the instruction contains the effective address of the operand. · Only one reference to memory is required toTypes of Addressing Modes · Immediate Mode · Register Mode · Register Indirect Mode · Auto Increment/Decrement Mode · Direct Addressing Mode · Indirect Addressing Instruction Sets: Addressing Modes and. Formats. Computer Organization and Architecture. Instruction Set Design. • One goal of instruction set design is to. Pentium and PowerPC instruction formats —Look in A, find address (A) and look there for operand —More addressing modes and address fields make.