The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1994
Filed:
Feb. 23, 1993
Daniel J Buerkle, Newark Valley, NY (US);
Agnes Y Ngai, Endwell, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mechanism translates a particular macroinstruction into its associated microprogram routine in a general purpose microprogrammed computer. The macroinstruction is capable of execution by either hardware or by microprogram. A table-look up approach is employed for a microprogrammed macroinstruction. The table is embedded in random-access-memory and contains entries representing the origins of various microprogram routines to execute the macroinstruction. The table entries are addressed by bits generated from the operation-code of the macroinstruction. The output of the table is used to address a single level control store containing the microprogram routines. Hardware is assembled in a single facility that is accessible by the microprogram routines to minimize the size of the microprogram routines required to execute the macroinstruction.