Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-01-13
1994-06-14
Bowler, Alyssa H.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
395275, 307412, 307418, 3649354, 36493542, 364DIG2, G06F 1300
Patent
active
053218426
ABSTRACT:
A processor specially adapted for use as a coprocessor. The processor is implemented as a microprocessor. The adaptations include the following: The microprocessor has a master-slave pin which receives an input which determines whether the microprocessor operates as a bus master or a bus slave. Certain output pins have three-state bus drivers which employ feedback to ensure that a signal on a line being driven by the driver has gone inactive before the driver is turned off. Instructions executed by the microprocessor permit specification of portions of the internal registers as sources and destinations and specification of the size of an ALU operation, permitting easy operation on data ranging from bytes through 24-bit pointers. Instructions are executed in an instruction pipeline and a separate I/O instruction pipeline. Some pipeline stalls are avoided by means of a special MOVE instruction which differs from an ordinary MOVE instruction in that it does not cause pipeline stall when it reads data from a register loaded by a preceding READ instruction. The microprocessor also has an Intel/Motorola pin whose input specifies the type of host processor the coprocessor is working with and further executes I/O instructions which permit the same code to be used with either host processor.
REFERENCES:
patent: Re31056 (1982-10-01), Chau et al.
patent: 4367420 (1983-01-01), Foss et al.
patent: 4507574 (1985-03-01), Seki et al.
patent: 4649298 (1987-03-01), Tuhy, Jr.
patent: 4663730 (1987-05-01), Ikeda
patent: 4691338 (1987-09-01), Makino
patent: 4777388 (1988-10-01), Widener
patent: 4802120 (1989-01-01), McCoy
patent: 4843254 (1989-08-01), Motegi et al.
patent: 4922449 (1990-05-01), Donaldson et al.
patent: 4937473 (1990-06-01), Statz et al.
patent: 4972438 (1990-11-01), Silvian
patent: 5109494 (1992-04-01), Ehlig et al.
Data Sheet, T7110 Synchronous Protocol Data Formatter with Serial Interface, AT&T, pp. 5,26.
Motorola Linear and Interface Integrated Circuits, Motorola, Inc. 1988, pp. 7-10 to 7-12.
Ryan, David P., "Intel's 80960: An Architecture Optimized for Embedded Control", IEEE MICRO, Jun. 1988, pp. 63-76.
Fairfield Robert C.
Spiwak Robert R.
Sufi Akkas T.
AT&T Bell Laboratories
Bowler Alyssa H.
Nelson Gordon E.
Shah Alpesh M.
LandOfFree
Three-state driver with feedback-controlled switching does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-state driver with feedback-controlled switching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-state driver with feedback-controlled switching will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1256304