This development has exceeded my estimates for effort required and overall code size.
Some of this is a result of feature creep with out doubt, but primarily this has been caused by simply under estimating the complexities of actually simulating a device even as simple as an ATMega328P MCU. The requirement for accurate simultations of the devices embedded in the MCU on top of the simulation of the CPU itself is a continued source of additional requirements which (left unsatisfied) cause the execution of known good executables to diverge from the same executable running on the real hardware.
This is solveable but requires continued and focused work on devices
There is no documentation targeted towards an end user. Operation of the simulation has been limited to myself and as "I know" how it works there has been no driver and need for suitably structured information.
This is now an issue and ought to be created
Drivers for more of the internal hardware devices need to be completed, debugged or simply created (where they are simply missing).