This emulator package allows your MS-DOS based PC to run as a TRS-80 Model I.
It will be able to run virtually all Model I applications and software from
Galaxy Invasion to Electric Pencil and the Z-80 Editor/Assembler.  My aim
was to be able to design a convincing "virtual reality" in which a Model I 
program would not be able to tell that it was not running in the genuine
machine.