Data processing system with look ahead feature

Claim 1

A DATA PROCESSING SYSTEM INCLUDING MEMORY MEANS HAVING INFORMATION STORED THEREIN AT VARIOUS ADDRESSES, SAID INFORMATION CONSISTING OF DATA WORDS AND INSTRUCTION WORDS, CONTROL MEANS FOR TRANSFERRING INFORMATION TO AND FROM SAID MEMORY MEANS, AN INSTRUCTION UNIT FOR SELECTING INFORMATION IN SAID MEMORY MEANS, SAID INSTRUCTION UNIT INCLUDING AN INSTRUCTION COUNTER FOR SPECIFYING THE ADDRESSES OF INSTRUCTION WORDS STORED IN SAID MEMORY MEANS AND AN INSTRUCTION REGISTER FOR STORING INSTRUCTION WORDS TRANSFERRED FROM SAID MEMORY MEANS, SAID INSTRUCTION WORDS SPECIFYING REQUESTED DATA WORDS AND OPERATION CODES, AND AN EXECUTION UNIT FOR PERFORMING A PROCESSING OPERATION ON DATA WORDS, IN COMBINATION WITH A PLURALITY OF ADDRESSABLE BUFFER REGISTERS FOR STORING INFORMATION, A PLURALITY OF CHANGABLE ADDRESSING MEANS ASSOCIATED WITH SAID BUFFER REGISTERS, EACH OF SAID ADDRESSING MEANS SELECTIVELY CONTROLLING SAID BUFFER REGISTERS TO PERFORM PROCESSING OPERATIONS THEREON IN ACCORDANCE WITH SAID INSTRUCTION WORDS, AND MEANS INTERLOCKING THE OPERATION OF SAID PLURALITY OF ADDRESSING MEANS SO THAT A PROCESSING OPERATION IS PERFORMED ON A BUFFER REGISTER BY ONLY ONE OF SAID ADDRESSING MEANS AT A TIME.