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Early Test for Clear Logical Immediate and Test Under Mask Instructions

IP.com Disclosure Number: IPCOM000048432D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08

Publishing Venue

IBM

Related People

Authors:
Hedeman, WR Hogan, SG [+details]

Abstract

Execution time of the Compare Logical Immediate and Test Under Mask Instructions is extended if the operands have to be brought into the data flow prior to testing for the condition code. By providing a test capability outside the data flow, the execution time of these instructions is reduced. This test capability is provided by a new micro-order, as described below.