https://en.wikipedia.org/wiki/U880 https://en.wikipedia.org/wiki/U880 > The U880 is an almost identical copy of Zilog's 8-bit Z80 microprocessor. I wrote my f

https://en.wikipedia.org/wiki/U880 https://en.wikipedia.org/wiki/U880 > The U880 is an almost identical copy of Zilog's 8-bit Z80 microprocessor. I wrote my first machine-level programs on that chip (I didn't have an assembler, only a dis-assembler, so I hand-translated the code and then used the dis-assembler to check if I had made typos).