Hi
I mean by not available : not working under my real time OS that I load through a grub2 paylaod.
You are right. I replace the IRQ 4 by an other one that it is not used in my system as follow :
#define PIRQ_PIC_ROUTES \ PIRQ_PIC(A, 5), \ PIRQ_PIC(B, 6), \ PIRQ_PIC(C, 7), \ PIRQ_PIC(D, 10), \ PIRQ_PIC(E, 11), \ PIRQ_PIC(F, 12), \ PIRQ_PIC(G, 14), \ PIRQ_PIC(H, 15)
And it works. Perfectly. I have my serial console on COM1 under the OS. I did not chose IRQ 3 because I am using also the COM2.
Many thanks Benoit
On 14/01/2016 23:02, Rudolf Marek wrote:
Hi
What does it mean not available? Maybe you can check if you programmed ELCR register to edge for IRQ4.
You can't share the IRQ4 with PCI IRQ I think thats why it does not work.
You need to route the the PIRQA to something else, like IRQ3.
Thanks Rudolf .