The first versions of my software that I developed back in 1991 were DOS-only versions that I wrote using Turbo Pascal. At the time, it never occurred to me that I would actually still be selling these products twenty years later. I never thought to create screenshots and document how the systems looked back then. Today, I'd love to have a visual record of what my software looked like through the ages.
How can I get these old DOS programs to run on a modern computer so I can take pictures of the screens to document and preserve the history of my software and its progression through time?