MAC200 High speed industrial controller for Quma system, the controller had to be microsecond accurate, but also  needed a lot of processing power due to mechanical delay in the values and switched on or off with versus speeds, so I used the 87 Micro family for this control, the software was written using low and high level languages, I used the low level in real-time mode to start and stop the operations within 3 microsecond of placement, and C++ to write the HID controls that was controlled through a LED menu.