CS501-Advance Computer Architecture

	Assignment No. 1 SOLUTION SEMESTER SPRING 2011 CS501-Advance Computer Architecture		Total Marks: 20 Due Date: 18/04/2011
Instructions Please read the following instructions carefully before submitting assignment: It should be clear that your assignment will not get any credit if: o        The assignment is submitted after due date. o        The submitted assignment does not open or file corrupt. o        The assignment is copied. o        There is not mentioned the student Id in the assignment or            name of file is other than student ID GOOD LUCK
Question No: 1		Marks: 4+4+4+4=16
·         Consider the following equation Z= (a-b)-16(c+d) You have to solve this equation using the following ·         Three Address instruction ·         Two Address instruction ·         1 Address Instruction ·         0 Address Instruction Solution: 3 address instruction 2 address instruction 1 address instruction 0 address instruction                                     Sub x,a,b Add r,c,d Mul s,r,16 Sub z,x,s                       Load y,a Sub y,b Load s,c Add s,d Mul s,16 Sub y,s Store z,y Lda c Adda d Mula 16 Sta s Lda a Suba b Suba s Sta z push c push d add push 16 mul push a push b sub sub popz
Question No: 2                                                                   Marks: 2+ 2= 4
·                     A digital computer has a common bus system for 16 registers of 32 bit each. The bus is constructed with multiplexers. Then answer the following questions ·                     How many selection inputs are there in each multiplexer? 16 registers = 24 => 4 selection inputs ·                     What sizes of multiplexers are needed? 16 registers => 16 x 1 line multiplexers are needed

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Digital Communication

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