[1] The NEC V20 processor released that year was guaranteed to be hardware compatible with the Intel 8088.
[2] Keystone software started advertising "PC Speedup Kits" in PCWeek magazine.
In practice most programs received a 5% speed increase but those that were math intensive were much improved.
One customer reported his monte carlo simulation of a nuclear reactor was so much faster that he "double checked the results because he couldn't believe it was finished."
CPMulator was designed to modify CP/M binaries to make them run as if native 8088 DOS programs.