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
Data scrambling in memory devices
Bird deterrent
Heteroleptic iridium complexes as dopants
Method and apparatus for controlling a multi-node process
Fast port switching in an audiovisual receiver by use of port pre-authentication by a partial PHY decoder core
Direct file transfer between subscribers of a communications systems
Hermetically sealed atomic sensor package manufactured with expendable support structure
  Randomly Featured Patents
Extrusion methods and apparatus
Operation amplification circuit, constant voltage circuit and reference voltage circuit
Direct current machine with switchable stator windings
Shift lever device
Organ circuit and method of operation
Transport vehicles for macromolecules
Ink composition for inkjet recording, ink cartridge and recording apparatus
Methods and systems for determining sustainability metrics in a print production environment
Zipper sewing attachment and method
Wind tunnel for cleaning and classifying solid particle form material