Here you can find the original version of David Hedley's 8086 PC emulator, and my "improved" version. This will emulate a basic PC with a VGA text-only display quite well; there is a reasonable amount of software that will work with no problems. The emulator uses the mfs.c code from Linux DOSEMU to mount Unix directories as drives under DOS, so you can transfer data from the host to the target easily. The improved version supports EMS memory and quite good floppy drive support.