Execute Channel Program

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(operating system)

Execute Channel Program - (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.

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EXCP

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executable file
executable form
executable module
executable program
executable software
executable statement
execute
Execute Channel Program
execute statement
execution
execution control program
execution cycle
execution environment
execution error detection
execution time

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