> Windows had a big, discontinuous shift when they abandoned the DOS-centric Windows codebase in the move to XP. You mean the move to the NT platform, which ma

> Windows had a big, discontinuous shift when they abandoned the DOS-centric Windows codebase in the move to XP. You mean the move to the NT platform, which made the consumer windows desktop OS finally stable. Compatibility features, while not perfect, were implemented to help try and get Win9x and DOS workloads to function normally. Some DOS apps ran fine on XP in compatibility mode, although I couldn't say what %.