Hello,

If have already post this in the BSP forum but it's also related with the OS itself then I double post here.

It seems that some changes have been done between QNX 6.3 and 6.4 related to the cascade vector and interrupt_attach?

On my PPC BSP I have a vector range (160 to 220) which is cascading vector 5 (PCI INTB).

With QNX version 6.3.x a driver was able to attach to a vector between 160 to 200 or directly to the vector 5.

Now with QNX 6.4.x if the driver call interrupt_attach on the vector 5 then it directly attached to the vector 160 
instead of 5!

Can someone confirm this? Is there some detailed information about this change?

If yes then is it possible that 2 range of vector (for example 160-220 and 230) cascade the same one (5 here)?

Any other informations regarding this will really help me :)

Thanks,
Christophe