How does cortex-M33, for example, know previous exception priority?

Hello I want to know about exception priority. In following situation A has highest priority, described as priority A. B has medium priority, described as priority B. C has lowest priority...
How does cortex-M33, for example, know previous exception priority?

Hello I want to know about exception priority. In following situation A has highest priority, described as priority A. B has medium priority, described as priority B. C has lowest priority...
Current priority level of processor

Hi, I have been reading about the exception mechanism of Cortex-M (M4 to be precise). The exception request is accepted by the processor if the current priority level of the processor is less than the...
Current priority level of processor

Hi, I have been reading about the exception mechanism of Cortex-M (M4 to be precise). The exception request is accepted by the processor if the current priority level of the processor is less than the...
Want to know the difference

I want to know the differences between the following two definiations: (*((volatile char xdata *)( CHIP_BASE + i))) ((volatile char xdata *)( CHIP_BASE + PTR_BASE + PTR_SIZE * i)) Thank you....