tripap

I've setup up a virtual machine and installed MS-DOS7.1 as the OS, and I'm
trying to install some very old software so I can demonstrate it to a class.
The program I'm trying to install is WordStar from the mid-1980's. When I run
WINSTALL.EXE from the first installation disk, it reads a bit and then exits
with the error: "CPU error: incorrect opcode. Killing process." I wonder if
this is an emulation problem where WordStar was written to run on i86 or 286
or 386 processor chips and the virtual PC emulation isn't taking the
emulation far enough back? I'd appreciate any suggestions as to how I might
be able to install and run some of this old software in my Virtual PC.