Strictly-speaking modern x86 computers running Windows should be compatible with any software written for the very first MS-DOS PCs starting with the original IBM PC and its clones. In practice, it's ...

I grew up with DOS, our first computer was an IBM PCJr with 256KB RAM. Dad bought a Gateway 2000 386 in 1990 and then left for contract work, leaving then ~14yo me to do any troubleshooting. That PC ...