4 ms·

The 486 added XADD, BSWAP, CMPXCHG, INVD, WBINVD, INVLPG to the instruction set. The original Pentiums added CPUID, CMPXCHG8B, RDTSC, RDMSR, WRMSR, RSM to the

by tssva 3y ago

The 486 added XADD, BSWAP, CMPXCHG, INVD, WBINVD, INVLPG to the instruction set. The original Pentiums added CPUID, CMPXCHG8B, RDTSC, RDMSR, WRMSR, RSM to the instruction set. Later Pentiums added the MMX instruction set.