To put the 8085 microprocessor in the wait state, one should:
2000
To put the 8085 microprocessor in the wait state, one should:
- A.
lower the HOLD input
- B.
lower the READY input
- C.
raise the HOLD input
- D.
raise the READY input
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Correct answer: B
In the 8085 microprocessor, the READY input is used to synchronize the processor with slower memory or I/O devices. If READY is low, the processor inserts wait states and delays completion of the current machine cycle until READY becomes high. HOLD is used for bus request/DMA, not for inserting wait states. Therefore, the wait state is produced by lowering the READY input.