A method and apparatus are provided for active termination control in a memory by an module register providing an active termination control signal to the memory. More particularly, the invention relates to a delivery system and a method for delivery of a bioactive agent containing a nucleophilic functional group by means of a biodegradable, sustained-release implant. By controlling various parameters such as the temperature of the adsorption article, the amount of the adsorbate on the adsorbent, and the flow rate of inert gas through the apparatus, the amount of chemical adsorbate material vapor that is released from the adsorbent can be precisely controlled and predicted. This inventive step is referred to as a compound selector switch. Preferably, the associated data is inserted into the bits of the digital data excluding the predetermined bits.