GB2294138B - Processor core embedded in an integrated circuit, simulator and emulator for the processor - Google Patents

Processor core embedded in an integrated circuit, simulator and emulator for the processor

Info

Publication number
GB2294138B
GB2294138B GB9519544A GB9519544A GB2294138B GB 2294138 B GB2294138 B GB 2294138B GB 9519544 A GB9519544 A GB 9519544A GB 9519544 A GB9519544 A GB 9519544A GB 2294138 B GB2294138 B GB 2294138B
Authority
GB
United Kingdom
Prior art keywords
processor
ser
integrated circuit
serial interface
shift unit
Prior art date
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.)
Expired - Lifetime
Application number
GB9519544A
Other versions
GB2294138A (en
GB9519544D0 (en
Inventor
Stephen John Barlow
Alistair Guy Morfey
James Digby Yarlet Collier
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.)
Cambridge Consultants Ltd
Original Assignee
Cambridge Consultants 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
Priority claimed from GB9419246A external-priority patent/GB9419246D0/en
Application filed by Cambridge Consultants Ltd filed Critical Cambridge Consultants Ltd
Priority to GB9519544A priority Critical patent/GB2294138B/en
Publication of GB9519544D0 publication Critical patent/GB9519544D0/en
Publication of GB2294138A publication Critical patent/GB2294138A/en
Application granted granted Critical
Publication of GB2294138B publication Critical patent/GB2294138B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/57—Arithmetic logic units [ALU], i.e. arrangements or devices for performing two or more of the operations covered by groups G06F7/483 – G06F7/556 or for performing logical operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G06F11/2236—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test CPU or processors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/36—Preventing errors by testing or debugging software
    • G06F11/362—Software debugging
    • G06F11/3648—Software debugging using additional hardware
    • G06F11/3656—Software debugging using additional hardware using a specific debug interface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/3001—Arithmetic instructions
    • G06F9/30014—Arithmetic instructions with variable precision
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/3005—Arrangements for executing specific machine instructions to perform operations for flow control
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30076—Arrangements for executing specific machine instructions to perform miscellaneous control operations, e.g. NOP
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30076—Arrangements for executing specific machine instructions to perform miscellaneous control operations, e.g. NOP
    • G06F9/30083—Power or thermal control instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F9/30098—Register arrangements
    • G06F9/30101—Special purpose registers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3867—Concurrent instruction execution, e.g. pipeline or look ahead using instruction pipelines
    • G06F9/3869—Implementation aspects, e.g. pipeline latches; pipeline synchronisation and clocking

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Computing Systems (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Microcomputers (AREA)
  • Power Sources (AREA)

Abstract

An integrated circuit contains a microprocessor core, program memory and separate data storage, together with analogue and digital signal processing circuitry. The ALU is 16 bits wide, but a 32-bit shift unit is provided, using a pair of 16-bit registers. The processor has a fixed length instruction format, with an instruction set including multiply and divide operations which use the shift unit over several cycles. No interrupts are provided. External pins of the integrated circuit allow for single stepping and other debug operations, and a serial interface (SIF) which allows external communication of test data or working data as necessary. The serial interface has four wires (SER_IN, SER_OUT, SER-CLK, SER_LOADB), allowing handshaking with a master apparatus, and allowing direct access to the memory space of the processor core, without specific program control. Within each processor cycle, the processor circuitry is divided into plural stages, and latches are interposed between the stages to minimise power consumption. <IMAGE>
GB9519544A 1994-09-23 1995-09-25 Processor core embedded in an integrated circuit, simulator and emulator for the processor Expired - Lifetime GB2294138B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9519544A GB2294138B (en) 1994-09-23 1995-09-25 Processor core embedded in an integrated circuit, simulator and emulator for the processor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9419246A GB9419246D0 (en) 1994-09-23 1994-09-23 Data processing circuits and interfaces
GB9519544A GB2294138B (en) 1994-09-23 1995-09-25 Processor core embedded in an integrated circuit, simulator and emulator for the processor

Publications (3)

Publication Number Publication Date
GB9519544D0 GB9519544D0 (en) 1995-11-29
GB2294138A GB2294138A (en) 1996-04-17
GB2294138B true GB2294138B (en) 1997-01-15

Family

ID=26305681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9519544A Expired - Lifetime GB2294138B (en) 1994-09-23 1995-09-25 Processor core embedded in an integrated circuit, simulator and emulator for the processor

Country Status (1)

Country Link
GB (1) GB2294138B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004023147A1 (en) 2004-05-07 2005-11-24 Endress + Hauser Flowtec Ag, Reinach Device for determining and / or monitoring the volume and / or mass flow rate of a medium
GB0516752D0 (en) * 2005-08-13 2005-09-21 Flownetix Ltd A method for ultra low power transit time ultrasonic flow measurement
AU2006281290B2 (en) * 2005-08-13 2011-03-31 Flownetix Limited Low power ultrasonic flow measurement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611309A (en) * 1969-07-24 1971-10-05 Univ Iowa State Res Found Inc Logical processing system
GB1593136A (en) * 1978-02-03 1981-07-15 Gusev Valery Data processing
FR2454136B1 (en) * 1979-04-12 1985-12-06 Materiel Telephonique FAST SEQUENTIAL ADDER
EP0108664A3 (en) * 1982-10-04 1987-10-28 Fairchild Semiconductor Corporation Floating point microprocessor
US4573118A (en) * 1983-03-31 1986-02-25 Fairchild Camera & Instrument Corporation Microprocessor with branch control
US4785393A (en) * 1984-07-09 1988-11-15 Advanced Micro Devices, Inc. 32-Bit extended function arithmetic-logic unit on a single chip
CA1265254A (en) * 1986-02-24 1990-01-30 Thomas Ralph Woodward Programmably controlled shifting mechanism in a programmable unit having variable data path widths
DE68928376T2 (en) * 1988-11-04 1998-04-02 Hitachi Eng Co Ltd DEVICE FOR MULTIPLICATING, DIVIDING AND DRAWING THE SQUARE ROOT

Also Published As

Publication number Publication date
GB2294138A (en) 1996-04-17
GB9519544D0 (en) 1995-11-29

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20150924