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 is more specifically described in the OS System Programmer's 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 z/OS; some details are different for TOS/360 and DOS/360 through z/VSE.
Wikipage redirect
Access methodBasic partitioned access methodChannel I/ODirect-access storage deviceEXCPExecute Channel Program in Real StorageExecute Direct Access ProgramExecute channel programIBM Administrative Terminal SystemIBM System/360 architectureIOBInput/Output SupervisorOS/VS2 (SVS)Start Input/OutputSupervisor Call instructionUser exitXPL
Link from a Wikipage to another Wikipage
primaryTopic
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 is more specifically described in the OS System Programmer's 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 z/OS; some details are different for TOS/360 and DOS/360 through z/VSE.
has abstract
In IBM mainframe operating sys ...... 360 and DOS/360 through z/VSE.
@en
Link from a Wikipage to an external page
Wikipage page ID
13,793,195
page length (characters) of wiki page
Wikipage revision ID
1,020,491,748
Link from a Wikipage to another Wikipage
wikiPageUsesTemplate
hypernym
comment
In IBM mainframe operating sys ...... 360 and DOS/360 through z/VSE.
@en
label
Execute Channel Program
@en