The PCnet-ISA+ controller, a single-chip Ethernet controller, is a highly integrated system solution for the PC-AT Industry Standard Architecture (ISA ) architecture. It is designed to provide flexibility and compatibility with any existing PC application. This highly integrated 132-pin VLSI device is specifically designed to reduce parts count and cost, and addresses applications where higher system throughput is desired. The PCnet-ISA+ Publication# 18183 Rev. B