How many times are you going to ask this question?
IRQ refers to INT # assigned to the PIC on older machines. There were at
first 8 and then 16, with the IRQ mapping to INT 8-16 and INT 70-77.
NT defines IRQL as interrupt request level and defines 32 levels. 3 to
around 21 (??) are what is called DIRQL (device IRQL) and are "finagled" by
the HAL.22 and above are generarlly reserved for system use. How does DIRQL
map to an interrupt vector? Good question ... it's magic.
Ok Jake ... How'd I do? :)
Gary G. Little
Have Computer, Will Travel ...
> Hi everyone,
> I have some confused questions here.
> 1. IRQ is dependent on hardware, while IRQL is independent on hardware,
> 2. What advantage does taking IRQL in Win2K/XP have?
> 3. Essentially,what is the difference of IRQ and IRQL ?
> Thanks a million.