Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP60050442ApriorityCriticalpatent/JPS60221843A/ja
Publication of JPS60221843ApublicationCriticalpatent/JPS60221843A/ja
Publication of JPS646490B2publicationCriticalpatent/JPS646490B2/ja
G06F9/00—Arrangements for program control, e.g. control units
G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
G06F9/30149—Instruction analysis, e.g. decoding, instruction word fields of variable length instructions