Browse Prior Art Database

Storage Diagnostic Instructions

IP.com Disclosure Number: IPCOM000068088D
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Lucas, DJ Stutzman, RH Sy, KK [+details]

Abstract

Two new instructions, Diagnostic Fetch and Diagnostic Store, provide a mechanism to test the storage in a non-store-through system. The format of these instructions is: Bits 0 - 7 Op Code (specifies storage diagnostic) 8 - 11 R1 field 12 - 15 R3 field 16 - 19 B2 field 20 - 31 D2 field B2 reg + D2 value = Op Code extension (distinguishes between Fetch and Store)