instruction register

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A high-speed circuit that holds an instruction for decoding and execution. See program counter and instruction set.

instruction register [in′strək·shən ‚rej·ə·stər]

(computer science)

A hardware element that receives and holds an instruction as it is extracted from memory; the register either contains or is connected to circuits that interpret the instruction (or discover its meaning). Also known as current-instruction register.

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No references found			The instruction register (IR) holds the current instruction being executed by the computer. Using instructional simulation in the computing curriculum by Crews, Thad / Academic Exchange Quarterly The M300 can store up to four instructions in an internal two- level buffer that is then used to directly supply the instruction register on demand. Motorola Debuts New M-CORE M300 Processor Family With Floating Point ... by Business Wire la-1993-compliant, with complete instruction register functionality, bypass, and 32-bit device ID register. PCB Testing Made Easy Using JTAG Technology; Two New JTAG Devices ... by Business Wire			Institutes for Wellborn Girls Institution Institution of Electrical Engineers Institution of Structural Engineers institutional economics institutional occupancy Institutional Revolutionary Party Institutionalism Instruction instruction address instruction address register instruction area instruction card Instruction Code instruction constant instruction counter instruction cycle Instruction Format instruction length instruction lookahead instruction mix instruction mnemonic Instruction Modification instruction pointer instruction prefetch instruction register instruction repertory instruction scheduling instruction set instruction set architecture Instruction Set Processor instruction time instruction transfer instruction word Instructional Literature Instructional Materials Instructional Procedure Instructional Program Instructions From Voters Instructions to a Son instructions to bidders instructions to tenderers Instructor Instrument instrument approach chart instrument approach procedure instrument approach system instrument correction Instrument Errors instrument flight instrument flight regulations			instruction execution Instruction Fetch Instruction Fetch Enable M Instruction Fetch Pipeline Instruction for Continued Airworthiness instruction format Instruction given instruction length Instruction list Instruction Local Memory Bus instruction lookahead instruction manual instruction manual Instruction Memorandum instruction mix instruction mnemonic instruction modification instruction of partial denture patient instruction of partial denture patient instruction of partial denture patient instruction of partial denture patient Instruction Pamphlet Instruction pipeline Instruction Plate Instruction pointer Instruction pointer Instruction prefetch Instruction Preprocessing Function Instruction Processing Unit instruction register Instruction Removal Detector instruction repertoire instruction repertory Instruction scheduling Instruction set Instruction set Instruction set architecture Instruction set architecture Instruction set architectures Instruction Set Computer Instruction Set Extension Instruction Set Extension Fabric Instruction Set Processor Instruction Set Processor Instruction Set Processor Specification Instruction Set Simulator instruction sets Instruction Space Key Instruction State Queue instruction time instruction to appear Instruction to Bidder Instruction to Contractors Instruction To Defense Instruction to Tenderers instruction transfer Instruction Translation Look-aside Buffer

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