Method and apparatus for resetting a random access memory

摘要

A resettable memory apparatus includes a random access memory including a plurality of memory locations, each memory location stores a plurality of bits of data. A single register has a plurality of bits, there is one bit for each of the plurality of memory locations. A reset signal resets all of the bits in the register to invalid. A reset value is generated when reading a particular one of the memory locations while the corresponding bit in the register is invalid to provide a resettable random access memory. Writing data to the particular memory location sets the corresponding bit in the register to valid. Subsequent reads to the location while produced the data stored therein as long as the corresponding bit in the register remains valid.