State the significance of LOCK signal in 8086. In which mode this signal is used?
Explain the operation of 8086 in that mode.
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
State the significance of LOCK signal in 8086. In which mode this signal is used?
Explain the operation of 8086 in that mode.
If 8086 is working at maximum mode, there are multiprocessors are present. If the system bus is given to a processor then the LOCK signal is made low. That means the system bus is busy and it cannot be given of any other processors. After the use of the system bus again the LOCK signal is made high. That means it is ready to give the system bus to any processor.
It is activated using the LOCK prefix on any instruction and is available at pin 29..