I have developed a lot of electronics and software using Bitbus. For companies like Assembléon (http://www.assembleon.com). A lot of the projects were done using the Intel P8044AH processor. Also the 80C152 was used. With PLM/51 and assembler as programming language, a lot of high precision servo's were controlled.
We changed our business to precise electronic components. We now have a complete line of Very precize (ppm level) Hall sensors. Customers are a lot of universities, and for example CERN.
I will still share all Bitbus information with you. When you need to have PL/M files compiled, we do have the Intel PLM compiler and can do it for you. Feel free to ask any question.