Editing CP/M (section)

=== Basic Disk Operating System ===

The Basic Disk Operating System,<ref name="Kildall_1975_BDOS"/><ref name="Kildall_1980_CPM"/> or BDOS,<ref name="Kildall_1975_BDOS"/><ref name="Kildall_1980_CPM"/> provides access to such operations as opening a file, output to the console, or printing. Application programs load processor registers with a function code for the operation, and addresses for parameters or [[memory buffer]]s, and call a fixed address in memory. Since the address is the same independent of the amount of memory in the system, application programs run the same way for any type or configuration of hardware.