Dma controllers - computer architecture, Computer Engineering

Assignment Help:

DMA controllers in computer system:

  •   DMA Controller
  •   Part of the I/O device interface
  •   DMA Channels
  •   Performs functions that in general would be performed by the processor
  •   Bus signals that control transfer
  •   Provides memory address
  •   Keeps track of number of transfers
  •   Under control of the processor

INTERFACE CIRCUITS

o   Provides a storage buffer for at least one word of data.

o   Circuitry required connecting an I/O device to a computer bus

o   Contains address-decoding circuitry

o   Contains status flag that can be accessed by the processor.

o   Generates the appropriate timing signals required by the bus control scheme.

o   Performs format conversions

o   Ports

o  Parallel port

o  Serial port

Keyboard to processor connection

8_DMA controllers.png

 


Related Discussions:- Dma controllers - computer architecture

Architecture, write a program in assembly language using emu8086 so that th...

write a program in assembly language using emu8086 so that the input string can contain both lower and upper case letters and any other character and the output will be the reverse

What is the size of the variant data type, The Variant data type has a nume...

The Variant data type has a numeric storage size of 16 bytes and can have data up to the range of a Decimal, or a character storage size of 22 bytes (plus string length),and can ke

Returns and procedures definitions in 8086, Q. Returns and Procedures defin...

Q. Returns and Procedures definitions in 8086? 8086 microprocessor supports RET and CALL instructions for procedure call. CALL instruction not only branches to indicate address

What are advantages and drawbacks of flip-flop, What are advantages and dra...

What are advantages and drawbacks of flip-flop? Usually area of a Flip-flop for features in more than a latch. Power consumption is normally higher, because of the area and

Hard disk technology - computer architecture, Hard Disk Technology: Fi...

Hard Disk Technology: Figure of a computer hard disk drive           HDDs record data by magnetizing ferromagnetic material directionally, to represent

Development of a successful system, The success of a system relies on the a...

The success of a system relies on the approach of building it. If development approach is right then system will work successfully. Figure below portrays a System Development Life

Cg, 1. How can you divide the screen into quadrants? Is the process called ...

1. How can you divide the screen into quadrants? Is the process called as ‘viewing transformations’?

What is encapsulation technique, Hiding data within the class and making it...

Hiding data within the class and making it available only by the methods. This method is used to protect your class against accidental changes to fields, which might leave the clas

Operating system, explain network operating system and design issues?

explain network operating system and design issues?

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