Control Unit Working
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Transcript of Control Unit Working
![Page 1: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/1.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
1
![Page 2: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/2.jpg)
R1
R1
PC
MDR
MAR
Y
IR
Control/Decode Unite
Pcout, MARin, Read, Select4, Add, Zin
Z
Constant 4
R2
2
![Page 3: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/3.jpg)
R1
R1
PC
MDR
MAR
Y
IR
Control/Decode Unite
Pcout, MARin, Read, Select4, Add, Zin
Z
Constant 4
MAR
R2
3
![Page 4: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/4.jpg)
R1
R1
PC
MDR
MAR
Y
IR
Control/Decode Unite
Pcout, MARin, Read, Select4, Add, Zin
Z
Constant 4
MARRead
R2
4
![Page 5: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/5.jpg)
R1
R1
PC
MDR
MAR
Y
IR
Control/Decode Unite
Pcout, MARin, Read, Select4, Add, Zin
Z
Constant 4
MARRead
Select4
R2
5
![Page 6: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/6.jpg)
R1
R1
PC
MDR
MAR
Y
IR
Control/Decode Unite
Pcout, MARin, Read, Select4, Add, Zin
Z
Constant 4
MARRead
Select4
ADDPC+4
R2
6
![Page 7: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/7.jpg)
R1
R1
PC
MDR
MAR
Y
IR
Control/Decode Unite
Pcout, MARin, Read, Select4, Add, Zin
Z
Constant 4
MARRead
Select4
ADDPC+4
Z
R2
7
![Page 8: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/8.jpg)
R1
R1
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, Pcin, Yin, WMFC
R2R2
8
![Page 9: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/9.jpg)
R1
R1
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, Pcin, Yin, WMFC
PC
R2
9
![Page 10: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/10.jpg)
R1
R1
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, Pcin, Yin, WMFC
PC
Y
R2
10
![Page 11: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/11.jpg)
R1
R1
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, Pcin, Yin, WMFC
PC
Y
WMFC
Waiting for the Data to come from the memory. When the data or Instruction is available, it will be Latched into MDR
R2
11
![Page 12: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/12.jpg)
R1
R1
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
MDRout, IRin
PC
Y
R2
12
![Page 13: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/13.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
MDRout, IRin
PC
Y
IR
ADD R1, R2
13
![Page 14: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/14.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
R1out, Yin, SELECTY
PC
Y
IR
ADD R1, R2
14
![Page 15: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/15.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
R1out, Yin, SELECTY
PC
Y
IR
ADD R1, R2
Y
15
![Page 16: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/16.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
R1out, Yin, SELECTY
PC
Y
IR
ADD R1, R2
Y
SelectY
16
![Page 17: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/17.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
R2out, ADD, Zin
PC
Y
IR
ADD R1, R2
Y
SelectY
17
![Page 18: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/18.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
R2out, ADD, Zin
PC
Y
IR
ADD R1, R2
Y
SelectY
ADD
18
![Page 19: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/19.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
R2out, ADD, Zin
PC
Y
IR
ADD R1, R2
Y
SelectY
ADD
Z19
![Page 20: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/20.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, R1in, END
PC
Y
IR
ADD R1, R2
Y
SelectY
ADD
Z20
![Page 21: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/21.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, R1in, END
PC
Y
IR
ADD R1, R2
Y
SelectY
ADD
Z
R1
21
![Page 22: Control Unit Working](https://reader034.fdocuments.us/reader034/viewer/2022052508/55956f6c1a28ab7b0c8b471f/html5/thumbnails/22.jpg)
R1
R2
PC
MDR
MAR
Y
Z
IR
Control/Decode Unite
Constant 4
Zout, R1in, END
PC
Y
IR
ADD R1, R2
Y
SelectY
ADD
Z
R1
22