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92 Posts
Discussion Starter #1
Hello,

i saw this feature 'pci ide bus master' with the options disable and enable in my bios setup screen. In my manual it's written "enable to specify that ide controller on the pci local bus has bus mastering capability" Does it mean
this feature is for add-on pci ide contoller card that has bus mastering capability ?
 

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AKA snkmad
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4,030 Posts
I think u should enable it, as you would gain some performance.
Theres no risk doing that, as most hardware today supports it.
 

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Premium Member
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1,933 Posts
That option doesn't actually control the bus mastering ability of the IDE controller. It turns on a built-in driver that allows the onboard IDE controller to perform proper DMA (Direct Memory Access) transfers.

When it’s enabled, the BIOS loads up the 16-bit busmastering driver for the onboard IDE controller.

The IDE controller transfers data via DMA, ensuing good transfer rates and low CPU utilization.

With this feature off, the BIOS will transfer data via PIO. (PIO is crap!)

It’s a good thing so you can just turn it on. :thumb:

Any other questions?
 

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Discussion Starter #4
Thanks, i'll leave it enable because bios disable it by default and optimal setup. And Nero cddrive reported lower cpu usage.
 
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