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Cao Unit-2

The document provides an overview of CPU architecture, detailing the major components such as the Arithmetic Logic Unit (ALU) and Control Unit, which facilitate instruction execution and data processing. It explains the function of registers, buses, and memory management, including stack operations like push and pop. Additionally, it discusses the significance of binary selection variables in controlling data flow within the CPU.

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doricav476
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115 views75 pages

Cao Unit-2

The document provides an overview of CPU architecture, detailing the major components such as the Arithmetic Logic Unit (ALU) and Control Unit, which facilitate instruction execution and data processing. It explains the function of registers, buses, and memory management, including stack operations like push and pop. Additionally, it discusses the significance of binary selection variables in controlling data flow within the CPU.

Uploaded by

doricav476
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Me cach processor segisheon Arrough sro mubtipheners Selection Utes tus mubtiotexen select ene | of the sever Srepichns at o Hime por occe?G cal Z oo parcbterlir but Zi The _spevation CoPR) select fn ALU delerminet the arithmetic or logic mex - operation To He performed The. ee? cresutt sf the ration can be tered back wate ay he processor nepishrs through Bebe ct | ine fq "axe decoder. kd The. clecodex acbvales of Hhe sregishs thro i one. ph tebect Hines ts boad the output value of tne micro Gnevalion => || The control uit that seperate the CPU bus system directs the tnformation plows through the sigpistos and ALU hy Lelecting vasSouk componente ¢ Por Ex - Ri <= Ro +R: 1: | Mux A scleclor Ccern) i> te piece the contsnt Sf Rp into bees Ot ~ ts place the corlent Sf Ry nile bus B 2. | MUBBseleclos CSE 3. | ALU eperation scleclar Copa)» tb provide the acithmetie additin APB | bh. | Beceder destination selecter Csern) ~ 16 Be contents the output bus Crt Rs # | fur conBrol selection vardables [SELA, SELB, OPR, SELD] axe genealed Jn contest unit & aveilesle at the jini clock cycle bgnth o Contre! Wordin Tere are Iu binary Selection rpute the unit 2 their Combined value xpectpre 2 contyel word 3 3 3 = SecA | sev8| seed] ope | trol Worel ——-0_202020202—" © Nine Loaner ap wo y The control unit provides the binary Selection vatuer Sa VasGout componente uch ag m exes Ne cotert LU» Gi) || SLA —> Select Q source Steg oy A, aJALL ‘yom Lf. K84it) one of -teven professor raps. Gi) ll sere > Select 9 cowree reg: fos B i/p Ef ALUY 3 bit) “5 Note in Ty the operation dee: net weguSrer tir Spout Value SELB elects no weptes 2 ofp from wdeconel mubliptexer wtes we ger Gii)|| SELD > Select _@ destination sregicter ising the decoder est) 2 the seven doad Of Gv)\|_OPR > Tt 3s an ration cole for the axithmet or Hegical eperdliin te be Performed o7 the turo Zy So nput perands selected from sérA & Loo R R R Lol 2 ee ee) 110 Re Ri R m4 g Roly Ro | | => Tre Deepicho eebected y jeldS SELA, SELB and SELD Js Dhe orc whose decimal number. Is egutvesent te the piusy numb tn the code: Cs 2 Athen SELA or SELB Ss coo the corresporcling multiplexer selectt the external input olats: Y | When SEL = 000 , no. destination segieher Sc 2ebeched but the confents of the output Gus axe quatlable [bn the enternel octpur- Operation Transfer A Brerement A Sub 4-8 coremert A AND A ard B OR A ork B ond B compliment A ight A last shen, stored Aut te seebvived first] A tefl featine y the CPU bs -atock - | Siocki- tick Js 0 sforage device thet storey Soformotsn tr auth @ mannex that the hen thovet tase Se the first then setrievel je iF pattern followed _spsratin Insertion 2s called push: Zn volin we sfre new lem on Tep paritiin The. sperstin of celetisn Is. called pop Bo srs operaliin we yemove ome item to that th, tiene ase simulated ty Zrerem enti the ack inter. Sregistan - d. BE Sulhacl pata [Fee EMPTY re ol=|elal= Block oliagram ofa 64 word stock DR | Chak Painhin Conkains Sinasy no, that Lnotfeolee oe _| actdess of the yore that Bs euserentty on the top j 4 Dia Gunword stack the SP _comtarre 6 bits becomte | 26 = 64 2 bile, it can't excees ne: grealx Prat wthan.63. Fyittst) Aceauce. Tf1tIL+I) = looeeod hut SP can accomodate only the six terct Bgrificart bits: Also when 900000 Se decremented by 1 by ua the result Ss rip til. Futtiw the one if Ssregtsten pull dr et toL corer the atack 9: poll. EMPTY t~ the one bit esregislen EmTy 74 Set Sot the 2tock 2c EnrY. DRiw DRY late iste that hell Lhe binroruy dels te be writtr” ints or ead out _o the Lo: Push. || Fritially enty Is ef to | & Fuirtis cleaved too Ss ee fe marked empty & not publ: YY 3G 2e not FOLLCY fou =0) a new ck | Js inserted with Posy eperatisn « lel 2~ When we wont tb puch then check that #lack 2 ee! Ss pull Crurr <1) then we wont te pop check EmTyY €), iy stack 3s emp pus s~ SP SP), thevement. op. mise] < DR write Yen on top ap slack» Fe pao) then (Furr <1) Check iy stack Je FULL EMTY <—D j Mask the stck net erply | 4 Oval |The Sk pent Js snevemented to that i points Js __- Dhe ackdress of the next -Aipherx word. a ¢ & | The memory wiih oprotion Drees the word from PR wnt top Gy stack : [Note r~ sp Aslels the aoldress Of the te, the sock a. M[sP] denotes the memory word specified & a the adden oveitasle in SP. i % | The past len x 2teredl Jn the stack 3s af acldvesst- * | The test ikm Se elored at addvess 0: % | EP SP Sreaches O the stock Js F full o scatitn Ls Once As Gorn 3: stead out . sp 2 decremenked and Steochet Me value 0 “2 Hah Fos Bhe 2utias palue of

tt Re ced ing the fetch pnose Le reac on qperrard inc Tous 5 > Used iwting the Exeulion phase Se readk an \ * operand x —> used Fo push 2 pop efeme. Addy eae Memory Unit Le 38 = bf Program Cin cchion Tae : Ag ;-—> Date | Cops reeds) k T 3000 _ 3997 se 3998. : T2oe9 ooo ps ‘roo [om Computer meme os =e ia memory with program, alata and afach oss tt + |DR—> Js uceck to Femporarciley -elere a 1 : th, le be uxt tfen or read from he a ex Satsang Hope Halen 1 =| Te Lritiad value SP 4s 4001 2 Aleck grows eet? decrecting akties . | TrenepoK the first dtem stored 2 the stock 5st addthess Yovo, teronch Tem 4s lore at addro% 3939 2 dost acthiets that can be uSedk por sock 3s 300°) >| No prvision for stock bemit checks - A PusHi~ Anew ttem 2s Ensented with the push ep? af - SP

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