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3*8 decoder Control Unit 2*4 decoder SC 100E 101101 2*4 decoder 1 001 xxx 1 000 zzz yyy 100 yyy 15 1412 OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC.

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Presentation on theme: "3*8 decoder Control Unit 2*4 decoder SC 100E 101101 2*4 decoder 1 001 xxx 1 000 zzz yyy 100 yyy 15 1412 OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC."— Presentation transcript:

1 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

2 (=, ) Fetch FR : 00 (C 0 ) Execute FR : 10 (C 2 ) Indirect FR : 01 (C 1 ) Inturrupt FR : 11 (C 3 ) c0t0c0t1c0t2c0t0c0t1c0t2 [ :CPU] - decode c1t0c1t1c1t2c1t3c1t0c1t1c1t2c1t3 c3t0c3t1c3t2c3t3c3t0c3t1c3t2c3t3 q7 Ic 0 t 3 - branch [ ] (ADD, AND) - branch c2t0c2t1c2t2c2t3c2t0c2t1c2t2c2t3 [ ] - branch - no-op

3 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

4 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

5 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

6 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

7 (=, ) Fetch FR : 00 (C 0 ) Execute FR : 10 (C 2 ) Indirect FR : 01 (C 1 ) Inturrupt FR : 11 (C 3 ) c0t0c0t1c0t2c0t0c0t1c0t2 [ :CPU] - decode c1t0c1t1c1t2c1t3c1t0c1t1c1t2c1t3 c3t0c3t1c3t2c3t3c3t0c3t1c3t2c3t3 q7 Ic 0 t 3 - branch [ ] (ADD, AND) - branch c2t0c2t1c2t2c2t3c2t0c2t1c2t2c2t3 [ ] - branch - no-op

8 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

9 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

10 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

11 (=, ) Fetch FR : 00 (C 0 ) Execute FR : 10 (C 2 ) Indirect FR : 01 (C 1 ) Inturrupt FR : 11 (C 3 ) c0t0c0t1c0t2c0t0c0t1c0t2 [ :CPU] - decode c1t0c1t1c1t2c1t3c1t0c1t1c1t2c1t3 c3t0c3t1c3t2c3t3c3t0c3t1c3t2c3t3 q7 Ic 0 t 3 - branch [ ] (ADD, AND) - branch c2t0c2t1c2t2c2t3c2t0c2t1c2t2c2t3 [ ] - branch - no-op

12 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

13 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

14 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz

15 3*8 decoder Control Unit 2*4 decoder SC 100E *4 decoder xxx zzz yyy 100 yyy OPR q7 q0 t3 t2 t1 t0 S AC FGI INPR OUTR FGO PC M A R Memory 4096*2bytes teletypewritermonitor To I I To OPR MBR 1 C0C1C2C3 To MAR F R 100 xxx yyy 101 zzz


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