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Guarantee of FPU status register during the interrupt handler

Last Updated:03/22/2017

Question:

An on-chip debugging emulator (serial) doesn’t return response although connected to a target device. 
Is FPSCR (FPU status register) guaranteed during the interrupt handler?

Answer:

FPSCR is guaranteed during the direct interrupt handler.
It is guaranteed depending on the compiler option "fpscr=safe" even in the normal interrupt handler.
Suitable Products
HI7000/4
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