In the case of the method is employed origin processor addresses a first length of n bits to the addressing in a cyclic address space a and a target processor addresses a second length of m bits, wherein the second length m is greater than the first length n. in the case of the origin processor, in the case of the base register storing - relative addressing distance values between a lower value min and an upper value max, permissible. For the program code is to be emulated during the origin processor the scope of the address space is limited in such a way that the reaction described in the following steps of address operands to semantically equivalent behavior leads to the target processor. First, then a projected address on the target processor determined by forming the sum of the contents of the base register (r) and a distance value (d) which is greater than or equal to a first furthermore, (d1) a first base register storing - relative instruction and is less than or equal to the difference (max - min), and projecting the sum to a cyclic address space with the addresses of a length of n bits. For the conversion of the base register storing - relative instructions are addresses, as the sum of the calculated projected address and the respective distance values (d1, D2) the instructions minus the distance value d determines.
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