7. A method for changing a succession of instruction words, the method comprising: providing a set of machine words, each machine word being associated with an address from a set of addresses; providing a succession of instruction words having address information, the succession of instruction words prescribing a sequence of machine words which are intended to be processed by an arithmetic and logic unit which is coupled to a buffer store; altering the association between at least a portion of the set of machine words and at least a portion of the set of addresses, so that a different address from the at least one portion of the set of addresses than previously is associated with each machine word from the at least one portion of the set of machine words; changing the address information in the succession of instruction words based on the alteration of the association; storing the changed succession of instruction words in a memory; and storing the machine words stored at the memory location having the address which is associated with the machine word.
7. A method for changing a succession of instruction words, the method comprising: providing a set of machine words, each machine word being associated with an address from a set of addresses; providing a succession of instruction words having address information, the succession of instruction words prescribing a sequence of machine words which are intended to be processed by an arithmetic and logic unit which is coupled to a buffer store; altering the association between at least a portion of the set of machine words and at least a portion of the set of addresses, so that a different address from the at least one portion of the set of addresses than previously is associated with each machine word from the at least one portion of the set of machine words; changing the address information in the succession of instruction words based on the alteration of the association; storing the changed succession of instruction words in a memory; and storing the machine words stored at the memory location having the address which is associated with the machine word. 9. The method as claimed in claim 7 , further comprising: providing a first memory location having a first address for storing a first machine word and a second memory location having a second address for storing a second machine word; and altering the association by storing the second machine word at the first memory location.