Intel 8259 interrupt controller-microprocessor, Assembly Language

Assignment Help:

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.

 


Related Discussions:- Intel 8259 interrupt controller-microprocessor

Flag register-microprocessor, Flag Register : 8086 has a 16-bit flag r...

Flag Register : 8086 has a 16-bit flag register which is divided into 2 parts, viz. (a)machine control flagsand (b)condition code or status flags. The condition code flag regi

Assembly HW help, I was wondering if you guys could offer me some advice an...

I was wondering if you guys could offer me some advice and help on how to proceed - not answers- for a homework problem I am attempting. I am currently working on a "bomb" project

Flowchart for the sequence of 8251-microprocessor, Flowchart for the sequen...

Flowchart for the sequence of 8251 Whether the control, mode or sync character register is selected depends on the accessing sequence.  A flowchart of the sequencing is given i

Lds/les instruction execution-microprocessor, LDS/LES Instruction execution...

LDS/LES Instruction execution :  LAHF : Load AH from Lower Byte of Flag: - This instruction loads the AH register with the lower byte of the flag register. This instruction ca

8255 programmable peripheral interface-microprocessor, 8255 Programmable Pe...

8255 Programmable Peripheral Interface Intel's 8255 A programmable peripheral interface provides a nice instance of a parallel  interface. As shown the interface have a control

Interrupt table-how interrupt table processed-microprocessor, Interrupt Tab...

Interrupt Table Each interrupt level has a booked memory location, called an interrupt vector.  All these vectors (or pointers) are stored in the interrupt table. Table lies at

Interrupt priority management-microprocessor, Interrupt Priority Management...

Interrupt Priority Management The interrupt priority management logic indicated in given figure can be implemented in several ways. It does not required to be present in system

Internal architecture of microprocessor, Internal Architecture of Microproc...

Internal Architecture of Microprocessor : The architecture of 8086 provides a number of improvements over 8085 architecture. It supports a, a set of 16-bit registers ,16-bit AL

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd