Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Microcode control mechanism utilizing programmable microcode repeat counter










Image Number 7 for United States Patent #4556938.

A microcode control mechanism is provided for producing the sequences of microwords used to control the execution of processor instructions in a microprogrammed data processor. This microcode control mechanism includes sequence counter circuitry for supplying a sequence of numbers and a programmable logic array mechanism responsive to the processor instruction and to the sequence of numbers for producing a sequence of microwords needed to execute the instruction. The microcode control mechanism also includes repeat circuitry responsive to a predetermined microword produced by the programmable logic array mechanism for setting the sequence counter circuitry back to a count which is less than the current count for causing a selected portion of the microword sequence to be repeated. The microcode control mechanism further includes a programmable repeat counter for counting the number of times the selected portion is repeated and for disabling the repeating action after a selected number of repeats.








 
 
  Recently Added Patents
Image processing apparatus capable of using replacement component, image forming apparatus capable of using replacement component, and method of administrating replacement component
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion
Selection of hash lookup keys for efficient retrieval
Pixel interleaving configurations for use in high definition electronic sign displays
Apparatus for electrographic printing or copying
Adjustable high precision surveying device
Power converter for an LED assembly and lighting application
  Randomly Featured Patents
V-shaped lawn raking apparatus
Polyimide composition and polyimide composite
Single chip, mode switchable, matrix multiplier and convolver suitable for color image processing
Material for selective absorption of solar energy and production thereof
Silica reinforced rubber compostition and tire with tread thereof
Antistatic resin composition
Apparatus for winding pilot lines
Sacroiliac fusion system
Recombinant feline herpesvirus comprising a foreign DNA inserted into a region corresponding to a 3.0 kb EcoRI-SalI fragment of a feline herpesvirus genome
Cooling apparatus for tubular plastics film extruded from a film blow head