Hi All: I used patch file (patch-denx-linuxppc_2_4_devel-2005_06_23_1722) to patch 2.4.25 Linux, but this patch file didn't contain " Using multi-level CPM interrupts" option.Why? I used RTAI that version is stromboli and I want to run example cpm_irqs.c. Best Regards, Rober Hsu