Methods and apparatus for allocating memory arrangement addresses to a
buffer chip, during an initialization mode, for use in addressing one or
more memory arrangements connected to the buffer chip are provided. A
buffer circuit may receive first initialization data specifying a first
set of available memory arrangement addresses and associate one or more
of the first set of available memory arrangement addresses with the one
or more memory arrangements connected to the buffer chip. The buffer
circuit may also generate second initialization data specifying the set
of available memory arrangement addresses available after the
association. The second initialization data may be transmitted to another
buffer circuit for use in address allocation or back to a memory access
control unit.