3.2.2. Return values

A model must return one of the following states for memory accesses:

PERIP_OK

If the model is able to service the request.

PERIP_BUSY

If a memory access requires wait-states. A model must not return this state to a debugger access.

PERIP_DABORT

If a peripheral asserts the DABORT signal on the bus.

PERIP_NODECODE

If the model has been called with an address which belongs to it, but which has no meaning to it. The memory model handles the call as a memory access.

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