This application is an emulator of the Motorola 6809 micro-processor of the 1980s. It emulates the processor, the ACIA 6850 redirected to the screen and the iOS keyboard and a PIA 6821.
The monitor executed and the one written for a homebrew computer 8 bits RedBoard6809. Simulation of the cartridges is also available as allows by the monitor.
The Microsoft Basic CoCoBasic is also available but in an experimental state. I suggest to play with EKMonitor and the integrated micro basic tinyBasic in direct mode as "PRINT "Hello".