There was also the three way ISA battle at Intel: 486 vs 860 vs 960. In the end they decided that legacy software was too valuable and redefined the 860 as a gr

There was also the three way ISA battle at Intel: 486 vs 860 vs 960. In the end they decided that legacy software was too valuable and redefined the 860 as a graphics co-processor and the 960 as a intelligent DMA to keep people from building Unix computers with them