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MAR: Memory Address Register are those registers that holds the address for memory unit. MBR: Memory Buffer Register stores instruction and data received from A macro is a sequence of instructions, assigned by a name and could be used anywhere in the program. In NASM, macros are defined with %macro and %endmacro The microprocessor fetches those instructions from memory, then decodes them and executes those instructions till STOP instruction is reached. It then sends the Computer Architecture and Design interview questions and answers for freshers and experienced - List of Computer Architecture and Design questions with 1. If a number of instructions are repeating through the main program, then to reduce the length of the program, ______ is used. · 2. The process of assigning aIn assembler language, a macro instruction is one that expands to become multiple instructions during the assembler program processing.