The invention comprises methods and apparatuses for interleaving a number of memory cards of different sizes. A restricted range modulo-N adder for identifying and selecting the correct interleave card is provided. Another aspect of the invention provides a computer system with flexible memory interleaving...http://www.google.de/patents/US5293607?utm_source=gb-gplus-sharePatent US5293607 - Flexible N-way memory interleaving
