MARS IDE can simulate MMIO for a number of devices, including a keyboard and character display. From the "Tools" menu, select "Keyboard and Display MMIO Simulator". This opens the window below Keyboard and Display MMIO Simulator, Version 1.4 Keyboard and Display MMIO Simulator DISPLAY: Store to Transmitter Data O000e Font DAD Uniformly distributed delay, min-1, maxnslider DAD Unitomly KEYBOARD: Characters typed here are stored to Receiver Data Oft1000 Tool Control Reset Close The simulator has a "keyboard" area where you can type, and a "display" that shows what you type- once you program that functionality. MARS IDE can simulate MMIO for a number of devices, including a keyboard and character display. From the "Tools" menu, select "Keyboard and Display MMIO Simulator". This opens the window below Keyboard and Display MMIO Simulator, Version 1.4 Keyboard and Display MMIO Simulator DISPLAY: Store to Transmitter Data O000e Font DAD Uniformly distributed delay, min-1, maxnslider DAD Unitomly KEYBOARD: Characters typed here are stored to Receiver Data Oft1000 Tool Control Reset Close The simulator has a "keyboard" area where you can type, and a "display" that shows what you type- once you program that functionality