Well...I can. The 8087 was basically obsoleted by register-based SSE2 and SSE3, and as I understand on x86_64 the vestigial 8087 op codes are decoded microinst

Well...I can. The 8087 was basically obsoleted by register-based SSE2 and SSE3, and as I understand on x86_64 the vestigial 8087 op codes are decoded microinstructions executed by the SSEx unit. And the descendant of the B5000 (now called Unisys ClearPath) is a VM running on Xeons; they stopped making stack-based MCP processors in 2015 or so. So I think the original point still stands.