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What (who) is channel program - definition
HIGH-PERFORMANCE INPUT/OUTPUT ARCHITECTURE
Channel controller; I/O processor; Channel controllers; Channel command word; Channel Command Word; I/O channel; I/o channel; System Assistance Processor; Channel program; System Assist Processor; IO channel processor
Channel I/O
In computing, channel I/O is a high-performance input/output (I/O) architecture that is implemented in various forms on a number of computer architectures, especially on mainframe computers. In the past, channels were generally
Execute Channel Program
OPERATING SYSTEM LOW LEVEL I/O API
EXCP; Execute channel program
<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)
Execute Channel Program
OPERATING SYSTEM LOW LEVEL I/O API
EXCP; Execute channel program
In IBM mainframe operating systems, Execute Channel Program (EXCP) is a macro generating a system call, implemented as a Supervisor Call instruction, for low-level device access, where the programmer is responsible for providing a channel program—a list of device-specific commands (CCWs)—to be executed by I/O channels, control units and devices. EXCP for OS/360 and successors
Wikipedia
Channel I/O
In computing, channel I/O is a high-performance input/output (I/O) architecture that is implemented in various forms on a number of computer architectures, especially on mainframe computers. In the past, channels were generally implemented with custom devices, variously named channel, I/O processor, I/O controller, I/O synchronizer, or DMA controller.
Examples of use of channel program
1. For digital downlink information for NASA TV‘s Media Channel (Program 103) on the Web, visit: http://www.nasa.gov/ntv
2. Pat Kearney, a spokesman for the Knievel family, said funeral speakers will include actor Matthew McConaughey, who hosted a History Channel program about Knievel in 2005.
3. For more information about SOHO on the Web, visit: http://www.nasa.gov/vision/universe/solarsystem/so ho2005.html For information about NASA and agency programs on the Web, visit: http://www.nasa.gov Video in support of this release will be available on Dec. 2 and 5 on NASA TV.'4; NASA TV‘s Video–File news feed is broadcast on the agency‘s Media Channel (Program 103) at 12 p.m. (Eastern), with replays at 3, 6, and 10 p.m. and 12, 6, and 10 a.m.
4. Kopatch yesterday refused to comment on his change of careers, as reported on Army Radio, but Sandak said, "Gil has always been an ardent supporter, even if this was not made public, and he is what we need to give the party the serious push that it requires." Advertisement For the past few years Kopatch was best known for his role on the Beep television channel program, "Hamofa shel Pini Hagadol." Before that he had a regular spot on Amnon Levy‘s "Closing the Week" on Channel 1.