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Assume that we would like to replace the ISZ instruction in the Basic Computer with a new instruction called DSN (Decrement memory and Skip if Negative). The opcode remains the same (110). The RTL description of the DSN instruction is the following: M[AR] M[AR] – 1, if (M[AR] – 1 < 0) then PC - PC+1 Complete the sequence below of micro-operations that are necessary to implement this new instruction starting from T4. D6T4 : M[AR] D6T5: TR + AC D6T6: AC + 0000 D6T7 : AC ++ AC' D6T8 : AC < DR + If AC (15)= then PC + PC+1 D6T9 : M[AR] D6T10: AC

Assume that we would like to replace the ISZ instruction in the Basic Computer with a new instruction called DSN (Decrement memory and Skip if Negative). The opcode remains the same (110). The RTL description of the DSN instruction is the following: M[AR] M[AR] – 1, if (M[AR] – 1 < 0) then PC - PC+1 Complete the sequence below of micro-operations that are necessary to implement this new instruction starting from T4. D6T4 : M[AR] D6T5: TR + AC D6T6: AC + 0000 D6T7 : AC ++ AC' D6T8 : AC < DR + If AC (15)= then PC + PC+1 D6T9 : M[AR] D6T10: AC

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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6:33 موسي نتشة Just now Assume that we would like to replace the ISZ instruction in the Basic Computer with a new instruction called DSN (Decrement memory and Skip if Negative). The opcode remains the same (110). The RTL description of the DSN instruction is the following: M[AR] M[AR] – 1, if (M[AR] – 1 < 0) then PC + PC+1 Complete the sequence below of micro-operations that are necessary to implement this new instruction starting from T4. D6T4 : M[AR] -> D6T5 : TR + AC D6T6: AC + 0000 D6T7 : AC ++ AC' D6T8 : AC + DR + If AC (15)= then PC + PC+1 D6T9 : M[AR] D6T10: AC II
Transcribed Image Text:6:33 موسي نتشة Just now Assume that we would like to replace the ISZ instruction in the Basic Computer with a new instruction called DSN (Decrement memory and Skip if Negative). The opcode remains the same (110). The RTL description of the DSN instruction is the following: M[AR] M[AR] – 1, if (M[AR] – 1 < 0) then PC + PC+1 Complete the sequence below of micro-operations that are necessary to implement this new instruction starting from T4. D6T4 : M[AR] -> D6T5 : TR + AC D6T6: AC + 0000 D6T7 : AC ++ AC' D6T8 : AC + DR + If AC (15)= then PC + PC+1 D6T9 : M[AR] D6T10: AC II
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