This version adds support for the Digital Group Video Board, as well as a ported MCMON monitor for the 8H that works with that interface. The following image is a screen shot of the app, showing the DG Video screen displaying an MCMON prompt.

This application is freely available for download from my web site.

I’m having a bit of trouble with the Apple Help system, but in case it is not working for you, you can also access the help pages from my web site.

The I/O port mapping for this emulator can be found on the Menu Options page of the help system.

The Digital Group Video Board interface for SCELBI has been one of the longest Vintage Computer projects I have been involved with. You wouldn’t think that fairly simple video card would involve so many different sub projects, but it has been quite an interesting challenge.

That said, I’m not quite done with it, as I still have to put together a nice demo application. That application is planned to be a port of SCELBI hangman. I have started flowcharting the video output software, but have a little ways yet to go.