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
Vehicles with electric motor
Method for repairing or replacing damaged tissue
Concentration measuring apparatus for hydrogen sulfide in gas flow, and method for determining sulfide ion
Playback device, playback method, and computer program
Polycarbonate resin composition and formed product thereof
Supporting multiple channels of a single interface
Luminescent substrate for liciferase
  Randomly Featured Patents
Rock drill bit inserts with hollow bases
Process and device for producing granulated slag sand from blast furnace slag
Oral therapy device
Collaborative organization analysis
Luminous flame of acetal polymers
Method for making metal oxide sputtering targets (barrier powder envelope)
Variable speed belt conveyor drive system
Methods, systems and devices for generating pulse shapes
Electroosmotic ink printer
Cable connector for separable type camera head