A wait state is a delay built into a microprocessor to allow other devices on the same bus to catch up. A wait state is inserted when the microprocessor is reading data from a slower device, such as main memory or certain types of I/O devices.
In a one-wait-state system, the microprocessor inserts one clock cycle of delay between the time it requests data from the slower device and the time it reads the data. In a two-wait-state system, the microprocessor inserts two clock cycles of delay, and so on.
The number of wait states is determined by the speed difference between the microprocessor and the slower device. For example, if the microprocessor is running at 10 MHz and the slower device is running at 5 MHz, the microprocessor will insert one wait state between the time it requests data and the time it reads the data.
Wait states are invisible to the user and do not affect the performance of the system as a whole. They only affect the performance of the microprocessor itself.
Why does a CPU have wait states?
Wait states are used in microprocessors to synchronize the processor with external devices. The number of wait states used is dependent on the particular device and the speed at which it operates.
Wait states are inserted when the processor is reading from or writing to a slower device, such as memory or an I/O device. By inserting wait states, the processor can ensure that it does not overwrite data or try to read data that has not yet been written. This allows for a smoother and more efficient operation overall.
How you can deal with wait state?
There are a few ways to deal with wait state:
1) Use a faster clock speed. This will reduce the overall wait time.
2) Use a higher performance microprocessor. This will also reduce the overall wait time.
3) Use a cache memory. This will store data that is frequently accessed and reduce the need to wait for data to be retrieved from main memory.
4) Use a multiprocessor system. This will allow multiple processes to be executed simultaneously, reducing the overall wait time.
What is wait state in 8086 microprocessor?
The 8086 microprocessor uses a wait state when it is accessed slower memory. This is because the 8086 has a 16-bit data bus, which means it can only transfer 16 bits of data at a time. If it is trying to access a 32-bit word, it has to do it in two cycles, each transferring 16 bits. This takes twice as long, so the 8086 inserts a wait state in between to give the memory time to catch up.
What is true about wait state *?
Wait states are periods of time during which a processor is idle, waiting for some event to occur.
There are two main types of wait states:
1. Instruction wait states: These occur when the processor is waiting for an instruction to be fetched from memory.
2. Data wait states: These occur when the processor is waiting for data to be fetched from memory.
Wait states can have a significant impact on performance, so it is important to understand how they work in order to minimize their impact.
What is meant by wait state in 8085? A wait state is an idle state in which the 8085 microprocessor is waiting for an external event. This event could be a memory or I/O operation. The 8085 enters a wait state when it is instructed to do so by an external device. The 8085 exits the wait state when the event is complete.