Access register
id:
access-register-245-14240675
title:
Access register
text:
In IBM terminology, an Access Register (AR) is a hardware register in ESA/370 and later mainframe instruction set architectures. Access registers work in conjunction with the general purpose registers, giving a program transparent access to up to sixteen 2 GB address spaces simultaneously. ARs were introduced with ESA/370 in 1988, and supported by the MVS/ESA operating system. In IBM System/360 architecture all instructions address memory by specifying a 12-bit offset from a value in a "base reg
brand slug:
wiki
category slug:
encyclopedia
description:
Hardware register in ESA/370 and later processors
original url:
https://en.wikipedia.org/wiki/Access_register
date created:
date modified:
2023-04-27T00:11:46Z
main entity:
{"identifier":"Q4672468","url":"https://www.wikidata.org/entity/Q4672468"}
image:
fields total:
13
integrity:
14