Start Input/Output
id:
start-input-output-302-3041046
title:
Start Input/Output
text:
In MVS/370 and successor versions of IBM mainframe operating systems, Start Input/Output (STARTIO) is a macro instruction and a "branch entry" for low-level device access, where the programmer is responsible for 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", several of which may be immediate returns to the Input/Output Supervisor (IOS). Invokers of STARTIO must be in supervisor mode and key
brand slug:
wiki
category slug:
encyclopedia
description:
Macroinstruction in IBM mainframe operating systems
original url:
https://en.wikipedia.org/wiki/Start_Input/Output
date created:
date modified:
2023-10-24T23:28:19Z
main entity:
{"identifier":"Q7602494","url":"https://www.wikidata.org/entity/Q7602494"}
image:
fields total:
13
integrity:
14