I recently visited the American Computer Museum in Bozeman, MT, which includes exhibits like an Apple I, assorted Apple IIs and Macs, two models of Altair systems, a PDP-8S, an IMSAI, electronic and mechanical calculators, many personal computers, and a Minuteman missile guidance computer. Check out my photos here.
What does it take to interface the F18A, a modern FPGA-based clone of the venerable TM9918A Video Display Processor (VDP), to an Apple II? Short answer: not much. Here’s the long answer. Let’s start with analyzing the design of the E-Z Color Graphics Interface, a TMS9918A-based “sprite board” with the design published in the August [...]