IBM was involved in the improvement of x86 systems given that their inception, at some point designing and manufacturing x86 processors intended for PCs as nicely as embedded systems.
Cyrix was a microprocessor developer founded in 1988. They specialized in math coprocessors for 286 and 386 microprocessors. IBM partnered with Cyrix to create what would grow to be their most notorious goods, released about the Intel Pentium era, the Cyrix 5×86 and 6×86 CPUs. Cyrix was acquired by National Semiconductor in 1997, later folding into one particular of Texas Instruments divisions.