Abstract: A memory module for controlling access by a processor to information stored within the memory module including a memory for storing a plurality of groups of information, each group including a data word, an operation word for indicating the operation to be performed by the processor on the data word, and a state word for representing the status of that group for processing by the processor. A selection module accepts an access request from the processor for an identified group, and for interpreting the contents of the request. The memory module further includes a state modification module for determining, based on the information within the identified group in the memory and the interpretation by the selection module, when the identified group is ready to be processed by the processor, for updating the status of the identified group by selectively modifying the state word, and for selectively signalling the processor when the identified group is ready to be processed.