TMS9918, The First Sprite Chip – Presentation at VCF SouthWest

Last week, I gave a presentation at The Vintage Computer Festival Southwest (VCF SouthWest) about the development of the TMS9918 (and related devices), which I helped define, design, simulate, and debug from September 1977 through mid-1978. In addition to the presentation, I participated in a one-hour question-and-answer session hosted by Matthew Hagarty. Matthew has developed a series of FPGA-based 9918 emulators, the latest of which is pin-compatible except for providing R, G, and B output rather than composite video.

XReal One Pro Optics and Its Connections to Ant-Reality and Google

Since starting this blog, I have been interested in AR optical designs that are different from others I have seen. When Xreal showed their Xreal One Pro at CES 2025, I was curious to know how it worked. As it turned out, the design was not as different as I had first thought. But the journey lead me to find some connections between Xreal's optical design and that of, Ant-Reality which was reportedly acquired by Google.

Canon R5 Mk ii Drops Pixel Shift High Res. – Is Canon Missing the AI Big Picture?

Sometimes, companies make what seems, on the surface, technically poor decisions. I consider this the case with Canon's new R5 Mark ii (and R1) dropping support for sensor Pixel Shifting High Resolution (what Canon calls IBIS High Res). Canon removed the IBIS High Res mode, which captures (as I will demonstrate) more real information and seemingly adds an AI upscaling to create fake information.