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
Defect inspection method and device therefor
Segmentation of a product markup image based on color and color differences
Systems and methods for assigning a template to an existing network configuration
Method for the treatment, alleviation of symptoms of, relieving, improving and preventing a cognitive disease, disorder or condition
Method for olympic event hospitality program management
Prevention and treatment of osteoarthritis
Pyrazole kinase modulators and methods of use
  Randomly Featured Patents
Inhalation device
Canteen lid
Use of 4-cholesten-3-one as an anti-obesity agent
Interleave control device, interleave control method, and memory system
Process for manufacturing a honeycomb body from heat-treated two-layered or multi-layered metal foils
Optoelectronic devices
Inlet structure for water jet apparatus mounted to boat hull
Retractable assist grip
Rear projection display apparatus
Process for producing multilayer molded article including folding of a skin material over a back of a resin material