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The Act-2 family of CMOS FieldProgrammable Gate Arrays uses an electrically programmable "antifuse" and new architectural and circuit features to obtain higher logic densities while increasing speed and routability. Improvements include: two new logic modules, novel IO and clock driver circuitry, and more flexible and faster routing paths. New addressing circuitry shortens programming time and speeds complete testing for shorts, opens and stuck-at faults. Fully automatic placement and complete routing are retained. Special software tools used for architectural exploration and layout generation are noted.

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Using certificate of generic boolean function, a technology mapper and several other applications are introduced. For multiplexor-based FPGAs, this technology mapper has the same quality as MIS-PGA[6] in terms of area while running faster and having the advantage of being independent of module functionality. Other applications include library function generation, routing cost minimization and peephole logic optimization.