<operating system> (EXCP) An IBM system for low-level file
access, where the programmer is completely responsible for
providing a list of device-specific "channel comands" to be
executed by I/O channels, control units and/or devices.
The operating system will simply check the "CCW" chains
for security purposes (access invalid memory or outside of
file extents) and then schedule them for execution.
(2005-08-08)
Nearby terms:
executable « executable content « execute « Execute Channel Program » execution » executive » Executive Systems Programming Oriented Language
