That explains a lot. Yes i know i should keep ISRs lightweight but i was just going to experiment with PIE to learn the instruction set and i was surprised it crashes in ISR. There is no way to make GCC emit these instructions like ARM or x86 does with +simd/-msee so sadly the only way is through as...

Hello, I would like to ask if it is possible to use Processor Instruction Extensions instructions like ee.vld.128.ip inside ISR handler ? I was experimenting with RGB LCD demo and was trying to optimize memory copying in on_bounce handler to use series of ee.vld.128.ip / ee.vst.128.ip instructions i...