MS-DOS on an Ancient Heathkit H8 computer using an 80186 CPU Board

Did you ever wish your vintage H8 8-bit computer ran MS-DOS? Probably not... but what if you did? In this video, I upgrade my H8 computer from its stock 8080 CPU to a 16-bit 80186 CPU. This is an upgrade from 2MHz to 25Mhz, and an increase in the memory bus width from 8-bit to 16-bit. The retrobrew SBC-188 was the basis for this design, which I modified to use the 80186 with its 16-bit data bus, and glued it to the Heathkit H8 "Benton Harbor" bus. In the video I demonstrate integration with some of my other boards, including an SP0256A-Al2 speech synthesizer, a VDIP1 USB module, and an H8-4 serial board. Some DOS software works fine, but some software will require true IBM PC compatibility and not work so well. Oh, and we die in Zork and play some Galactic Warezone too! For more vintage computer videos, see https://www.smbaker.com/