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ⓘ Execute Channel Program. In IBM mainframe operating systems, Execute Channel Program is a supervisor call for low-level device access, where the programmer is r ..




                                     

ⓘ Execute Channel Program

In IBM mainframe operating systems, Execute Channel Program is a supervisor call for low-level device access, where the programmer is responsible for providing a channel program - a list of device-specific commands - to be executed by I/O channels, control units and devices. EXCP for OS/360 and successors is more specifically described in the OS System Programmers Guide., EXCP for DOS/360 and successors is more specifically described in DOS Supervisor and I/O Macros. This article mostly reflects OS/360 through, some details are different for TOS/360 and DOS/360 through z/VSE.

                                     
  • In IBM mainframe operating systems, Execute Channel Program in Real Storage EXCPVR is a supervisor call for low - level device access, where the programmer
  • In IBM mainframe operating systems, Execute Direct Access Program XDAP is a pseudo access method for accessing direct access datasets on a block by
  • Modifier in the channel status, causing the channel to skip the TIC CCW thus the channel program will not branch and the channel will execute the READ command
  • providing a list of device - specific CCWs, that is, a channel program to be executed by I O channels control units and devices and a number of exits
  • Communications, Cox Cable and Tele - Communications Inc. TCI The channel s programming focused mainly on theatrically released motion pictures, with the
  • to be executed at a time. A plane allows similar flash commands to be executed in parallel within a die. There are three fundamental programming constraints
  • utilizes highly specialized channel programs and it is theoretically possible to load and to relocate an entire executable within one revolution of the
  • is recognized when a program attempts to execute a privileged instruction when the problem state bit in the PSW is 1. An execute exception is recognized
  • and interruptions, IOS is divided into two primary program sections CSECTs Execute channel program supervisor EXCP in PCP, MFT MFT - II and MVT EXCP EXCPVR
  • Concurrent computing is a form of computing in which several computations are executed during overlapping time periods - concurrently - instead of sequentially one
  • are available to execute the program being compiled. The following sections outline the key features of XC. Statements in XC are executed in sequence as
  • covert channel is created by a sender process that modulates some condition such as free space, availability of some service, wait time to execute that