Integrated circuits with RAM and ROM fabrication options

The present invention relates to electronic integrated circuits (ICs) that retain identical functionality with better performance or lower power dissipation under RAM and hard-wire ROM fabrication options, without the need to alter transistor layout within the IC. An integrated circuit (IC) comprising: a plurality of transistors; and a first selectable fabrication option comprised of a user configurable memory circuit; and a second selectable fabrication option comprised of a hard-wired circuit in lieu of said user configurable memory circuit; wherein, the IC functionality and performance is determined by the configuration memory data in the first fabrication option, and wherein the identical configuration is hard-wired in the second fabrication option without altering the location of transistors within the IC. Such a programmable to hard-wire conversion provides a significant IC cost reduction, performance improvement and power dissipation reduction at minimal NRE cost and improved reliability.