There are some external contributors who are getting very close to having several later Epson parallel printers fully emulated. They run the firmware and complete their self-tests now, but they can't yet receive data from the host system or produce any output.

As far as I can tell they're back compatible all the way to the Epson MX and FX that were ubiquitous in the 80s so it should be possible to get your George RR Martin on from a variety of MESS emulated systems smile