MICROPROCESSOR AND MICROCONTROLLER

INTRODUCTION TO MICROPEOCESSOR

MICROCOMPUTER SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
It is an 8259A pin configuration that is used as output from the master to the slave for cascading multiple 8259A in a system.
A
SP/EN
B
CAS2-CAS0
C
CS
D
WR
Explanation: 

Detailed explanation-1: -INTA (Interrupt Acknowledge): This pin is used to enable 8259A interrupt vector data on the data bus by a sequence of interrupt acknowledge pulses issued by the CPU.

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