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Questions and Answers
Which microoperation is performed during the AND to AC instruction?
Which microoperation is performed during the AND to AC instruction?
- DR ← M[AR]
- AC ←AC Λ DR (correct)
- DR ← AC
- AC ← M[DR]
What happens to the output carry during the ADD to AC instruction?
What happens to the output carry during the ADD to AC instruction?
- Transferred to SC register
- Transferred to E flip-flop (correct)
- Transferred to M[AR]
- Transferred to DR register
Why can data stored in memory not be processed directly?
Why can data stored in memory not be processed directly?
- Due to memory protection mechanisms
- Due to slow memory retrieval speed
- Due to needing to be read to a register first (correct)
- Due to lack of memory space
Which operation decoder is used for the AND to AC instruction?
Which operation decoder is used for the AND to AC instruction?
What is the purpose of the LDA instruction in the context provided?
What is the purpose of the LDA instruction in the context provided?
During which microoperation is the sum transferred into AC in the ADD to AC instruction?
During which microoperation is the sum transferred into AC in the ADD to AC instruction?
What is the purpose of the BSA instruction?
What is the purpose of the BSA instruction?
Which microoperation is required for the execution of the STA instruction?
Which microoperation is required for the execution of the STA instruction?
What is the reason for not connecting the bus to the inputs of AC?
What is the reason for not connecting the bus to the inputs of AC?
In the ISZ instruction, why is it necessary to read the word into DR before incrementing it?
In the ISZ instruction, why is it necessary to read the word into DR before incrementing it?
What does the BUN instruction allow a programmer to do?
What does the BUN instruction allow a programmer to do?
How many microoperations are involved in executing the BSA instruction?
How many microoperations are involved in executing the BSA instruction?
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