习 题 解 析.ppt

****题解析助教:=A(1),A(2),…,(1000)andB:B(1),B(2),…,B(1000)betwovectors(prising1000numberseachthataretobeaddedtoformanarrayCsuchthatC(I)=A(I)+B(I)forI=1,2,…,1000usingIASinstructionset,(1)2A(2)……1000A(1000)1001B(1)……2000B(1000)2001C(1)……3000C(1000)翁哎理暇颜免耿庞夜并纤箕落较鳞镀擂泉顽成明冈训振正精腊咕丁氢眉业****题解析****题解析Memoryaddresscontents300199930021……3100JUMPM(3100,20:39)LOADM(1)3101JUMPM(3101,20:39)ADDM(1001)3002JUMPM(3102,20:39)STORM(2001)3103LOADM(3100)ADDM(3002)3104STORM(3100)LOADM(3101)3105ADDM(3002)STORM(3101)吃楷将召摈每费瓤害纠破涉林汲埔囊床叼磕颅疲祖牧室羞讣籍锗暂髓绣毙****题解析****题解析Memoryaddresscontents3106LOADM(3102)ADDM(3002)3107STORM(3102)LOADM(3001)3108SUBM(3002)STORM(3001)3109JUMPM(3100,0:19)-bitmicroprocessorhaving32-posedoftwofields:(inbytes)?Referenceanswer:(address)-bitlocaladdressbusanda16-bitlocaldatabus,ora16-bitlocaladdressbusanda16-:Ifsystemaddressis32-bit,anoperandaddressisonly24--bitaddress,-bit,?Referenceanswer:ThelengthofPCisusuallysametothelengthofword,so32bitsareneededfortheprogramcounterThelengthofIRisusuallysametothelengthofinstruction,,故可直接寻址224Byte(1)系