After Elxsi, Thomas founded NexGen Microsystems. Nexgen implemented the
x86 architecture in its processors. Their processors translated code designed to run on the traditionally CISC-based x86 architecture to run on the chip's internal RISC architecture. After the announcement of a competitor to Intel's
i386 line of CPUs, journalist
John C. Dvorak described Thomas as "a big-time defender of CISC architecture". Much of the underlying theory was developed during Thomas' doctorate work, under the supervision of his advisor,
Ed Davidson. Thomas was president, CEO, and chairman at Nexgen. He was succeeded as CEO by Atiq Raza in 1991 but remained chairman. and AMD acquired Nexgen later that year. == Other service ==