CP/NC is a CP/M-compatible operating system for the Amstrad NC100 Notepad Computer. It is based on Russell Marks’ ZCN operating system, but focuses more on CP/M compatibility and makes the computer “feel” more like an old-fashioned CP/M box.
While ZCN is a rather playful system that adopts lots of features and external programs from DOS and Unix, CP/NC goes back to the roots: you will find a rather minimal CCP and the usual external commands, such as DUMP, PIP, STAT, and SYSGEN. CP/NC also changes the layout of the LCD console from 120×10 characters to a more readable 80×8.
Here is a summary of what CP/NC is and is not as well as a list of differences between CP/NC and ZCN.
This is such an oddly specific operating system.