[shdon]

Surely that's Doom8088 rather than the original version if this thing truly emulates an XT level machine (or rather an 80186 CPU)?

[Narishma]

How does it even work on an 80186? I thought Doom required a 386.

[hakfoo]

There's been some downports. They tend to be slow, some of them using things like rendering using 80x50 text modes in 16 colours to reduce the "pixel" count.

I recall trying a Wolfenstein 3-D downport and it was getting about 5 fps on a NEC V40 (80188-equivalent) at 8MHz.