On 2009/11/12, at 21:40, Sébastien Bourdeauducq wrote:

> The interrupt controller in LM32 is definitely edge-sensitive, so its 
> documentation is wrong:
> 
> I am also wondering why they use active low signals? From this design, they 
> do 
> not seem to provide any architectural advantage, and only make using LM32 a 
> bit more complex...

Thank you for examining. 

FYI
According to following URL
http://www.latticesemi.com/documents/gpio.pdf
The LatticeMico32 GPIO includes level-sensitive and edge-sensitive IRQ.


Takeshi

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