EINRICHTUNG UND VERFAHREN ZUM VERSCHIEBEN EINES BITFOERMIGEN DATENBLOCKS

摘要

A method and apparatus provide for relocating a block of data bits from a source location in a memory 15 to a destination location in the memory, where data in the memory is organized and addressed in the form of words and the source and destination locations can occur at different bit positions in different words in the memory. A destination word register 30 receives and stores data in the form of an assembled destination word. A holding register 32 receives and stores a word for subsequent use in the destination word register. Word splitting means 36, 38, 40, 34 enable bits of a word stored in register 32 to be merged with bits of an adjacent word from the source location, thus forming the assembled destination word, in accordance with a degree quantity (bit offset), so that the data in the destination word register 30 is positioned at the proper bit position for writing to the destination location. The degree quantity is a function of the source and destination location boundaries and is preferably expressed in two's complement format. <IMAGE>