Intel 8259 interrupt controller-microprocessor, Assembly Language

Intel 8259 interrupt controller

The 8088 processor has only two interrupt control inputs, and interrupt request (INTR) and non mask able interrupt (NMI). NMI are interrupts that can't be masked (for examples: power loss ,memory parity error). The interrupt controller has many functions:

  • It's receives interrupt requests from up to eight different sources.
  • It's prioritized and queues interrupts that come at the same time
  • it 's masks interrupt requests when instructed by the CPU
  • It's processes the CPU's interrupt-acknowledge signal by sending the interrupt vector number to the CPU.

 

Posted Date: 10/10/2012 9:13:22 AM | Location : United States







Related Discussions:- Intel 8259 interrupt controller-microprocessor, Assignment Help, Ask Question on Intel 8259 interrupt controller-microprocessor, Get Answer, Expert's Help, Intel 8259 interrupt controller-microprocessor Discussions

Write discussion on Intel 8259 interrupt controller-microprocessor
Your posts are moderated
Related Questions
check the al-register for palindromic number

There are two parts to this assignment. The first part has you reading 4 integers representing; #QUARTERS, #DIMES, #NICKELS & #PENNIES, respectively. Your program should compute t

Interrupt System Based on Single 8259 A The 8259A is contained in a 28-pin dual-in-line package that need only a + 5-V supply voltage.  Its organization is shown in given figur

Please let me know if you can do an assignment in the next 12 hours

How to write an assembly program The initial step in writing an assembly language program is to identify and study the problem. After studying the problem, choose the logical m

Declare 1 constant. This can be done just below the prototype section. Put the following divider above the constant section. ;************************ Constants ****************

which uses BIOS interrupt INT 21 to read current system time and displays it on the top-left corner of screen.

Why is the capability to relocate processes desirable?

what is the hex value in ax after executing the instructions ax= 1E8A bx=4080 add al,bl sub ah,bh

EVOLUTION OF MICROPROCESSOR : The digital circuits and systems may be broken into two part: 1) Sequential Circuit and 2) Combinational Circuits     Norm