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Is the FPSCR (FPU status register) guaranteed during the interrupt handler?

Last Updated:05/17/2017

Question:

The serial on-chip debugging emulator doesn’t return a response even though it's connected to a target device. 
Is the FPSCR (FPU status register) guaranteed during the interrupt handler?

Answer:

Yes, the FPSCR is guaranteed during the direct interrupt handler.
It is also guaranteed when the compiler option is "fpscr=safe" even in the normal interrupt handler.

 

Suitable Products
HI7000/4