Editing Amstrad CPC (section)

===CP/M===
[[Digital Research]]'s [[CP/M]] operating system was supplied with the 664 and 6128 disk-based systems, and the DDI-1 disk expansion unit for the 464. 64k machines shipped with CP/M 2.2 alone, while the 128k machines also include CP/M 3.1. The compact CP/M 2.2 implementation is largely stored on the boot sectors of a 3" disk in what was called "System format"; typing |CPM from Locomotive BASIC would load code from these sectors, making it a popular choice for custom game loading routines. The CP/M 3.1 implementation is largely in a separate file which is in turn loaded from the boot sector.
Much [[public domain]] CP/M software was made available for the CPC, from word-processors such as VDE to complete bulletin board systems such as ROS.