What are WAIT states in microprocessors? - 8085

Topics > 8085 > What are WAIT states in microprocessors? - 8085 > Post your comment

What are WAIT states in microprocessors? - 8085
8085 05-25-2012 03:24 AM

What are WAIT states in microprocessors, Explain.

- The WAIT state plays a significant role in preventing CPU speed incompatibilities.

- Many a times the processor is at a ready state to accept data from a device or location, but there might be no input available. This can lead to wastage of cpu time.

- So in such cases when the cpu is ready for an input but there is no such valid data then the system gets into WAIT state. In this scenario the pin 35 ( ready pin )is put into a low state.

- As soon as there is some valid data for the 8085 the system comes off the WAIT state and the low state of the READY pin is withdrawn.

Post your comment

Also Read
Flag register in the 8085 microprocessor
Explain all the addressing modes of the 8085 with the help of examples.
How can signals be classified for the 8085 microprocessor?
Describe briefly the accumulator register of 8085.
What is a stack pointer register? - 8085
Control and timing circuitry of the 8085.
What are the boons and banes of having more general purpose registers in a microprocessor.
What are WAIT states in microprocessors? - 8085
Steps involved in a Fetch Cycle - 8085
Flow of a typical Instruction Word - 8085
Externally initiated operations - 8085
What differences can you state between the HLT and HOLD states? - 8085
Different types of data transfers possible in the 8085.
What happens when the INTR signal goes high in the 8085
Explain briefly the TRAP input for the 8085.
What are the two major differences between INTR and other interrupts ( hardware)? - 8085
Classify interrupts on the basis of signals. State their differences. - 8085
Write a program that will store the contents of an accumulator and flag register at locations 2000H and 2001H.
Interrupt driven mode of data transfer - 8085
Various functional blocks of the 8085 microprocessor. - 8085
Home | About us | Sitemap | Contact us