Throughout its history, from the early four-circuit gate-array chips of the
late 1960s to today's billion-transistor multichip module, IBM has investe
d in tools to support its leading-edge technology and high-performance prod
uct development. The combination of demanding designs and close cooperation
among product, technology, and tool development has given rise to many inn
ovations in the electronic design automation (EDA) area and provided IBM wi
th a significant competitive advantage. This paper highlights IBM's contrib
utions over the last four decades and presents a view of the future, where
the best methods of multimillion gate ASIC and gigahertz microprocessor des
ign are converged to enable highly productive system-on-a-chip designs that
include widely diverse hardware and software components.