what was the least PC-Compatible "MS-DOS"
machine out there back before
"100% PC Compatible" was a thing?
DEC Rainbow 100, Tandy 2000, TI Professional, Heath H-100/Zenith Z-100, HP
110 and 150, NEC APC, Victor 9000, Sanyo MBC-55/550/555, Apricot PC, and
too many more to enumerate. In the early to mid 1980s many of the computer
companies thought that if they built a better-engineered (both HW & SW)
808x-based system, they could get a larger share of the market than IBM
with the crappy PC design. History shows otherwise.