IRQ's DMA's Memory Addresses

  iqs 10:31 14 Oct 2008
Locked

Hi all,

I'm currently studying the Comptia A+ Essentials .

The many books I am reading list different IRQ,s DMA's and Memory Addresses .Each book is different.So which one is correct???.

Can you please confirm what the correct ones are please.

Thank you in advance for your help.

Cheers

  DieSse 10:44 14 Oct 2008

"The many books I am reading list different IRQ,s DMA's and Memory Addresses"

Possibly they all are. I don't understand what you mean - all the parameters you list are there to be allocated. They can be allocated differently in different systems - though there are standardised ones normally associated with specific facilities in specific types of systems.

Also don't forget that "Wintel PCs" are not the only type of computer.

  DieSse 10:46 14 Oct 2008

Example of what I mean, for IRQs.

click here

  iqs 10:59 14 Oct 2008

Thank you for your help.

Each book lists all the IRQ's ,DMA's and Memory Addresses,for example,this is from the CISCO web site.The 2 lists are different to that printed in two different books..

DMA 0 SOUND
1 SOUND
2 FDD
3 LPT1
4 CASCADE
5 SOUND
6 AVAILABLE
7 AVAILABLE

COM1 3F8
2 2F8
3 3E8
4 2E8
5 378
6 278

I would like to go into the exam with the correct info,hence the thread.

Thank you again for your help.

Cheers

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