Behavior of reading/writing registers while eCore is active

[alexrp]

The manual says that reading from memory-mapped registers while an eCore is active is not supported. It's not specified whether this is true of writing as well. It is also not specified what actually happens if the host attempts to do so. Finally, it's unclear whether this is a restriction that applies only to the host or to other eCores as well.

[mhonman]

[aolofsson]

mhonman,

Thanks for the the validating what can and cannot be read. This is what we would expect. I thought I wrote in the reference manual that reading from General Purpose Registers (R0-R63) during operation was forbidden? If it said memory mapped registers I will change it to be more specific.

alexrp,
The behavior is "undefined" if an illegal general purpose register access occurs.

Andreas

[mhonman]

[alexrp]

Ah, yes, it does say general-purpose registers. My bad!