Posts tagged with “Michael Gingell”


PC-Four was the first TRS‑80 Model 4 emulator for IBM PC compatible computers. It was written by Michael Gingell and introduced by Hypersoft in mid-1987 for a price of $79.95. PC-Four required a computer with at least 384K of memory and worked on both floppy and hard drive systems.

PC-Four (sometimes referred to as PC4) was quite different than later TRS‑80 emulators. It achieved most of its compatibility not through Model 4 hardware emulation but by emulating the Model 4 operating system.