We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you a podcast all about Citrix Workspace, moving to the cloud, and analytics & intelligence. Episode 2 coming soon!Listen Now

x

Lets talk "IRQ"'s.  I noticed in one of my servers a video card and USB both have the same one.

Medium Priority
274 Views
Last Modified: 2012-05-06
They both show IRQ 7 in the bios.  How can they both use the same one?  Can I add more IRQ's?  What exactly are IRQ's?
Comment
Watch Question

Commented:
This comes from the *old* days of DOS.  IRQ's allowed a hardward device to interact with the computer thru something called an "Interuppt Request Level"  hence the IRQ.

Again , in the old days, you used to have to manually set devices to use a specific IRQ , such as a com port, LPT port, or a modem or such.  They were not shareable; but now devices play together much nicer...

Hope that helps

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
Thanks!
Back in the day (DOS) Com1&Com3; Com2&Com4 shared a common IRQ; however both devices could not communicate at the same time. IRQs are hardware lines used to communicate with the processor. SImply, the hardway shoots "hey, got something" to the processor.

Modern OS's have worked around the problem (its been years since I had OS Theory classes at this level)... so please don't ask me to explain.

If you are using DOS - it'll likely be a problem, XP, Vista, etc -- you should be OK.

Can't add IRQs.

Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.