Articles by John Linville

As often discussed, the Motorola 6847 VDG offers little in terms of assistance for game programmers or other software authors. While many contemporary video chips offered assistance in scrolling backgrounds or in moving objects in the foreground of a display, the 6847 hardware merely provides access to a static framebuffer. …

Well, it’s been a while!  Despite the boredom and isolation that came along with the COVID years, I didn’t do much that was very impressive in terms of retro programming during that time. In a cruel twist of fate, the boredom (and an ongoing spat with another CoCo media figure) …

 A few months ago, a retrocomputing post from David Wiens caught my attention. The post indicated that David was looking for some assistance in recovering an old piece of 6809 assembly language software that he had keyed-in from a listing in a book. The software in question was a 6809 …