Nested Interrupts, enable state after context switch

[ripperle (Andy)]

See here…

Nios II VIC for interrupts

mark1122 wrote on Wednesday, March 20, 2019: Hi, the current freeRTOS only supports IIC for NiosII. VIC is about 4x faster. I have over 10 interrupts in my design and I really need the VIC for performance. I saw the feature request #115 created 1 year and 9 months ago. Could someone give me a hint on how to implement it? I am sure someone has done it. My understanding of IIC is that all interrupts(hardware + softare) go through the exception vector(usually address 0x20 or anything defined in Q…