Resources Contact Us Home
Single chip microcomputer with patching and configuration controlled by on-board non-volatile memory

Image Number 3 for United States Patent #4802119.

A single chip microcomputer with patching and configuration is provided with blocks of patch memory which may be patched over faulty and/or obsolete areas of the microcomputer's memory map under control of starting address registers which are implemented in on-board non-volatile memory. The starting address registers, and enable registers which control whether each patch block is placed in the memory map, are programmable under control of the microcomputer's CPU. Newly programmed values in these registers are not effective to alter the memory map until a reset sequence enables a latch. In particular embodiments, patch blocks may overlie mask ROM, internal EPROM and/or EEPROM, external memory or devices or any other desireable portion of the memory map.

  Recently Added Patents
Mask blank, transfer mask, and film denseness evaluation method
Method and apparatus for detection of LVDT core fallout condition
Method for correcting integrating cavity effect for calibration and/or characterization targets
System and method for redirected firewall discovery in a network environment
Gyroscope utilizing torsional springs and optical sensing
Glycosyltransferase promoter
Method of fabricating semiconductor light emitting device
  Randomly Featured Patents
Bicycle wheel with a hub provided with mounting seats for mounting spokes thereon
Mitigating interference in a communication network
Method for performing CoMP operation and transmitting feedback information in a wireless communication system
Methods of inhibiting dental erosion/discoloration using a beverage composition comprising a long chain polyphosphate
Low residue well treatment fluids and methods of use
Lining of pipelines and passageways
Personal care compositions with enhanced properties, method of manufacture, and method of use thereof
Vertical-resonator-laser-diode with a light-absorbing layer and method of manufacturing the same
Air bag device
Hydraulically unblockable non-return valve