Doom came out much later in 1994. Wolfenstein 3d and a ton of other games worked fine on a high speed 286. EMS also works fine, heck it even works fine on an 8

Doom came out much later in 1994. Wolfenstein 3d and a ton of other games worked fine on a high speed 286. EMS also works fine, heck it even works fine on an 8088. What doesn't work are things like EMM386 that emulate EMS using extended memory. The 286 supported up to 16MB of XMS and if you could afford that much RAM, you probably could afford a 386 or 486 CPU..