Re: ix86 Atomic ops during DMA...

[Bart Hartgers]

On  9 Aug, Richard B. Johnson wrote:

How about:

	lock andl (%ebx),0xffffffff

Not sure 100% if I have the arguments in the right order ;-). 


> 	I need...
> 
> 	movl (%ebx), %eax	# Read status from register in ebx
> 	movl %eax, (%ebx)	# Write it back
> 
> ..to occur together without the bus being taken away by a DMA
>  operation until these two instructions are complete.

-- 
Bart Hartgers - TUE Eindhoven 
http://plasimo.phys.tue.nl/bart/contact/
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