Interesting, the wiki is not clear on this. "OS/2 1.x targets the Intel 80286 processor and DOS fundamentally doesn't. IBM insisted on supporting the 80286 pro

Interesting, the wiki is not clear on this. "OS/2 1.x targets the Intel 80286 processor and DOS fundamentally doesn't. IBM insisted on supporting the 80286 processor, with its 16-bit segmented memory mode, because of commitments made to customers who had purchased many 80286-based PS/2s as a result of IBM's promises surrounding OS/2. Until release 2.0 in April 1992, OS/2 ran in 16-bit protected mode and therefore could not benefit from the Intel 80386's much simpler 32-bit flat memory model and virtual 8086 mode features." https://en.m.wikipedia.org/wiki/OS/2 https://en.m.wikipedia.org/wiki/OS/2 The developer of busybox/toybox also had 80286 discussion. https://www.landley.net/history/mirror/os2/OS2Warp.html https://www.landley.net/history/mirror/os2/OS2Warp.html