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7191432 |
High frequency compound instruction mechanism and method for a compare operation in an arithmetic logic unit
A high-frequency compound instruction mechanism and method allows performing a common compare immediate function before an add function has completed, thereby reducing the number of cycles to...
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7028171 |
Multi-way select instructions using accumulated condition codes
The present invention relates to a method and system for providing an N-way select instruction in a processor. Specifically, a method for providing an N-way select instruction includes decoding an...
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6757819 |
Microprocessor with instructions for shifting data responsive to a signed count value
A data processing system is provided with a digital signal processor which has an instruction for shifting a source operand in response to a signed shift count value and storing the shifted result...
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6530011 |
Method and apparatus for vector register with scalar values
A method and an apparatus for implementing mixed scalar and vector values in a digital processing system. In one embodiment, a digital processing system, which contains processing unit and...
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6334183 |
Method and apparatus for handling partial register accesses
The present invention includes a partial register write handler. The write handler receives either two or three operands. An execution unit operates on portions of two operands, rather than on full...
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6116768 |
Three input arithmetic logic unit with barrel rotator
A data processing apparatus includes a three input arithmetic logic unit (230) that generates a combination of the three inputs that is selected by a function signal. Data registers (200) store the...
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6119048 |
Integrated circuit for processing digital signal
A digital signal process of a plurality of functions is enabled by a common hardware constructed on one chip having input terminals t1, t2 and t2'; output terminals t3 and t4; and a control signal...
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5995747 |
Three input arithmetic logic unit capable of performing all possible three operand boolean operations with shifter and/or mask generator
A data processing apparatus includes a three input arithmetic logic unit (230) that generates a Boolean combination of the three inputs that is selected by a function signal. The arithmetic logic...
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5960193 |
Apparatus and system for sum of plural absolute differences
A method for forming a sum of the absolute value of the difference between each pair of numbers of respective first and second sets of numbers. The method includes forming the difference between...
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5805477 |
Arithmetic cell for field programmable devices
An arithmetic cell to be used in field programmable devices is defined in this invention. This cell will allow efficient implementations of multipliers, multipliers/accumulators and adders...
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5765013 |
Digital signal processor
A digital signal processor includes an execution unit separated into an arithmetic unit, a multiplier unit, a logic unit, a shift unit and a log unit, to implement CCITT G721 ADPCM algorithm with a...
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5596763 |
Three input arithmetic logic unit forming mixed arithmetic and boolean combinations
A three input arithmetic logic unit (230) forms a mixed arithmetic and Boolean combination of three multibit input signals. The arithmetic logic unit (230) first forms a Boolean combination and...
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4084152 |
Time shared programmable logic array
This specification describes arrays for performing logic functions. In these arrays input variables are placed on a series of parallel input lines that intersect a number of parallel output lines...
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3604909 |
MODULAR UNIT FOR DIGITAL ARITHMETIC SYSTEMS
A modular logic unit consisting of a plurality of identical logic elements interconnected to perform a large variety of arithmetic operations which fully utilize the logic elements so as to make...
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3576984 |
MULTIFUNCTION LOGIC NETWORK
A multifunction logic network is provided to perform a selected one of a plurality of operations, each a function of one, two or three variables and five control signals. A first plurality of gates...
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3500061 |
UNIVERSAL LOGIC DEVICES
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3381117 |
Minimal pin multipurpose logic circuits
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3291974 |
Planar function generator using modulo 2 unprimed canonical form logic
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3201574 |
Flexible logic circuit
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