http://bugs.winehq.org/show_bug.cgi?id=19752
--- Comment #2 from Vitaliy Margolen vitaliy@kievinfo.com 2009-08-16 14:39:28 --- 16-bit windows apps can work. 16-bit DOS app in vm86 mode won't work. It's a hardware limitation (CPUs don't support vm86 mode in 64-bit protected mode).