- : Read : whenever the read signal is at logic 0, the data bus receives the data from the memory or I/O devices connected to the system
READY - This is the acknowledgement from the slow devices or memory that they have completed the data transfer operation. This signal is active high.
INTR - Interrupt Request: Interrupt request is used to request a hardware interrupt. If INTR is held high when interrupt enable flag is set, the 8086 enters an interrupt acknowledgement cycle after the current instruction has completed its execution.