Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Patching of a read only memory










Image Number 3 for United States Patent #6260157.

A processing device includes a ROM having program instructions and at leas one jump instruction stored therein, a patch program for patching the program instructions in the ROM, a RAM capable of storing the patch program and a patch vector table that indicates the location of the patch program. A processor executes the program instructions in the program ROM and uses the patch vector table to execute the patch program when one of the jump instructions is reached. The patch program may be stored in the RAM and the patch vector table may point to the address in the RAM at which the patch program is stored so that the processor jumps directly to the RAM to execute the patch program when it reaches the one of the jump instructions. Likewise, a patch engine may be used to locate a specified patch program, load the specified patch program into the RAM and execute the specified patch program when the processor reaches the one of the jump instructions.








 
 
  Recently Added Patents
Battery loading and unloading mechanism
Selective facsimile denial
Serving base station selection based on backhaul capability
Topology arrangement for achieving reliable communication in wireless automotive networks
Vehicle speed verification system and method
Pipe coupling
Testing SQL query writing skills
  Randomly Featured Patents
Plasticized polyvinyl butyral interlayers
Gardening and agriculture hand tool
Expandable jack
Method and apparatus for improving bandwidth efficiency in a computer network
Method of learning character segments from received text, and associated handheld electronic device
Single mode channel optical waveguide with a stress-induced birefringence control region
Fire barrier system
Flash memories with adaptive reference voltages
Image telecommunication system
Safety steering column for a motor vehicle