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
High performance actuator motor
Method and apparatus for user selection of advertising combinations
Method, apparatus and computer program product for visualizing whole streets based on imagery generated from panoramic street views
Writing implement
Query processing with specialized query operators
Method and system for generating and displaying an interactive dynamic graph view of multiply connected objects
Stabilized redispersible polymer powder compositions
  Randomly Featured Patents
Vibratory element for an inertial device
Method of manufacturing a double-edged peeling knife
Pharmaceutical formulation and its use
Incandescent lamp with mounting assembly
Method for treating leukemia with a hexa-cyclic compound
Parallel generating of bundles of data objects
Management communication bus for networking devices
Matrix board material and mold and a method for making printing plates therefrom
Method for producing grain-oriented silicon steel containing copper
Germanium and arsenic double implanted pre-amorphization process for salicide technology