1. Apparatus for controlling the firmware branch points in an electronic postage meter comprising: ROM means for storing a program for the electronic postage meter, said program including at least one firmware branch point wherein a different part of the program for meter operation is accessed in accordance with each branch from the branch point; non-volatile memory means having addresses therein for storage of information; said non-volatile memory means having at least one specified address wherein for storing a selectable data bit; said data bit corresponding to selection of a particular active branch of the program at said firmware branch point; and means interconnecting said ROM means and said non-volatile memory means for providing communication therebetween to control the firmware branch point to cause access to the branch of the program selected in accordance with the data bit present in said non-volatile memory means.