1 address instruction format in computer !768!

someone who can understand computer architecture to write more efficient and more effective programs. 4 5.2 Instruction Formats Instruction sets are differentiated by the following: address of the data in the instruction. The instruction format in this type of computer uses one address field. For example, the instruction that specifies an arithmetic addition is defined by an assembly language instruction as ADD. Where X is the address of the operand. Chapter 5 Instructor's Manual _____ Chapter Objectives Chapter 5, A Closer Look at Instruction Set Architectures, provides a closer look at instruction 6 * 2 12 1-address instructions 212 212. Page 5 In a computer instruction format, the instruction length is 11 bits and the size of an • Word size and instruction size? [Now most instructions have 32-bits, and machines allow operation on 64-bit data operands] • Data types? [Whatever the application demands] • 0/1/2/3 address instructions, or a mix of them? [Most modern designs allow 3-address instructions, and pack them in a 32-bit frame] • How many addressing modes Address Inf. • Example computer instruction format: - Uses multiple words of 16 bits - Typical instruction is Add: C = A+B - Most general instruction is to add 2 numbers in memory and store in a 3rd location Add A, B, C [A]+[B] C Op Code Opcode word (plus some addressing inf.) Second word Third word Adapted from Table 5-2, Computer System Architecture, Third Edition by M. Morris Mano, 1993, Prentice Hall.Computer System Architecture, Third Edition by M. Morris Mano, 1993, Prentice Hall. Instruction Format 1. Presented by: Gulrez Bawa Sanjeev Aggarwal Pratik Jain Parmod Kumar Date: 1 st Oct. 2010 Computer System Architechture Instruction Format 2. Introduction Types of Instructions Register Reference Instructions I/O Instructions Memory Reference Instructions Presentation Outline 3. Explain three basic types of instruction code format used in computer There are various instruction format's de