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What are the ways for 8085 microprocessor to exit from wait state?
Wiki User
∙ 14y ago
The only way to exit WAIT state on the 8085 is to assert READY. You could perform a reset, but the processor will still remain in TWAIT if READY is not true.
Wiki User
∙ 14y ago
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What is the use of command MOV A A in 8085 microprocessor?
The MOV A,A instruction in the 8085 does nothing, not even change flags. It only consumes time, specifically four clock cycles plus applicable wait states.
What is NOP Instruction stands in 8085 microprocessor?
The NOP instruction is a no-operation instruction. It does nothing to the state of the machine, except to use some time. In the case of the 8085, it uses four clock cycles plus however many wait states are need to access the NOP instruction from memory.
8085 microprocessor state the number of machine cycles and t-states required to complete the execution of the 8085 instruction mov m a?
The 8085 instruction MOV M,A requires two machine cycles and 7 T states. Cycle one is 3 T states for opcode fetch, plus 1 T state for opcode decode. Cycle two is 3 T state for operand store. These numbers do not include WAIT states. WAIT states are interposed between T2 and T3 of any memory access cycle, and the total number of WAIT states depends on the READY line.
How wait state is generated in 8086 microprocessor?
wait state is a delay experienced by a microprocessor when accessing external memory or another device that is slow to respond. the vice versa also come into scenario. Now, to be able to access slow memory the microprocessor must be able to delay the transfer until the memory access is complete. One way is to increase the micro processor clock period by reducing the clock frequency. Some micro processors provide a special control input called READY to allow the memory to set its own memory cycle time. If after sending an address out, the microprocessor does not receive a READY input from memory, it enters a wait state for as long as the READY line is in 0 state. When the memory access is completed the READY goes high to indicate that the memory is ready for specified transfer.
What is the wait state in microprocessor?
The wait state, TWait, is a extra clock cycle added to the machine cycle to allow time for external hardware to respond. During this extra cycle, none of the address, data, or control pins change state. Wait state is entered if READY is false (LOW) on the rising edge of clock following ALE. READY is sampled each rising edge of clock thereafter and wait state will not be exited until READY is true (HIGH).
If the frequency of the crystal connected to 8085 is 6MHz calculate the time to fetch and executed NOP instruction?
At a crystal frequency of 6MHz, the 8085 microprocessor has a clock frequency of 3MHz, or a period of 333 nanoseconds. The NOP instruction requires four clock cycles, three to fetch and one to execute, so the NOP instruction with a crystal frequency of 6MHz would take 1.333 microseconds to fetch and execute. This does not include wait states, each of which would add 0.333 microseconds to the timing.
What are some clubpenguin cheats for 2009?
# First click at a exit # go to you mail box # then wait # exit you mailbox # you will be standing on a exit!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Your welcome
T state in op-code fetch of 8085?
There are four T states during op-code fetch in the 8085. T1 is the ALE state, where the address is emitted and the RD- line goes true; TWAIT is zero or more wait states based on READY; T2 is the middle of the fetch, and the internal strobing of the op-code; T3 is the completion of the fetch and stabilization of the bus signals; and T4 is the internal processing cycle.
How do you exit a race in Burnout Paradise?
you stop your car and wait
Do you have to wait after you spelled ten in the labyrinth in mythology island?
No you just have to exit the labyrinth through the exit in the bottom right corner (past the scorpion)
Types of system call in process management?
fork, exec, wait, exit
What is a command to the processor to wait for slower devices to catch up?
It could be called either a buffer or a wait state.
