A programmable gate array with an improved interconnect structure facilitates multi-source networks, communication of signals long distances across the array, and creation of networks in a symmetrical interconnect structure. The interconnect includes direct connections for each configurable logic block...http://www.google.com.tw/patents/US5329460?utm_source=gb-gplus-share專利 US5329460 - Programmable gate array with improved interconnect structure, input/output structure and configurable logic block
