Abstract: A portion of cache memory may be converted from temporary memory to fixed memory such that the instructions, data or both instructions and data stored at the cache memory address are fixed or locked at the cache memory address and cannot be overwritten. As a result, the portion of the cache memory corresponding to the cache memory address becomes a physical static random access memory (SRAM). The cache memory has cache memory addresses with data elements temporarily stored therein and a tag associated with each cache memory address. A use mode selector designates whether the portion of cache memory located at the cache memory address is to be converted from temporary memory to fixed memory.

Abstract: An interface adapter board according to the present invention can be inserted directly between two electronic parts without substantially displacing the electronic parts laterally. An electronic circuit board may include: (a) a first electronic part having a first array of conductors; (b) a second electronic part having a second array of conductors; and (c) an interface adapter board placed between the first and second electronic parts in such a way to minimize the lateral distance between each conductor of the first array and its respective conductor of the second array. The interface adapter board has a third array of conductors and a fourth array of conductors formed through the interface adapter board and positioned in an interstitial relationship with the third array of conductors. Each conductor of the first array is coupled to its respective conductor of the third array. A first set of conductors of the third array is directly coupled to its respective set of conductors of the fourth array.