Revision as of 06:30, 23 March 2021 edit Chatul (talk \| contribs) Extended confirmed users 8,448 edits →Relationship to supervisor: SRB mode only exists in MVS ← Previous edit		Revision as of 11:08, 29 April 2021 edit undo Chatul (talk \| contribs) Extended confirmed users 8,448 edits Clarify that an SVC is a type of system call Next edit →
Line 2: {{short description\|Operating System low level I/O API}} {{more citations needed\|date=June 2012}} In [[IBM mainframe]] [[operating system]]s, '''Execute Channel Program''' ('''EXCP''') is a [[macro]] generating a [[system call]], implemented as a [[Supervisor Call instruction~~\|supervisor call~~]], for low-level device access, where the programmer is responsible for providing a ''[[Channel program#Channel Program\|channel program]]''—a list of device-specific commands (CCWs)—to be executed by I/O channels, control units and devices.<ref name="Hannula1974">{{cite book \| author=Reino Hannula \| title=Computers and Programming: A System/360-370 Assembler Language Approach

Execute Channel Program: Difference between revisions