Quoting Olaf Seibert,

> I was looking around for doscmd (a dos emulator) and all I found
> was the FreeBSD version (doscmd-970320). Would there be an up to
> date NetBSD version? 

> The FreeBSD version would not "just compile". It also contained some
> patches to the FreeBSD kernel to change the VM86 support. It was not
> obvious to me if similar patches would be needed for NetBSD.

Charles ported it ot NetBSD and fixed bugs in doscmd as soon as it
became available (from BSDI), I think. You can find it at
ftp.netbsd.org in pub/NetBSD/arch/i386/doscmd. You should not
need any patches at all to the kernel to make it work.

- Frank