On my 65265 MCU build, I was curious what it would take to get basic speech capabilities. As I researched this, having the 65265 directly generate speech did not seem like the right approach, primarily due to the CPU-intensive nature of speech synthesis. Rather, a dedicated speech synthesis chip was likely a better approach. Doing a cursory search, I found these as potential options: General Instrument / Microchip SP0256 Family (SP0256‑AL2) Texas Instruments LPC Speech Chips (TMS5100 /...

As my W65C265S hardware build is coming along well, I would like to develop an operating system (OS) for it. While I have done miscellaneous 65xxx development over the years, my code has always been a mishmash of routines. The closest I have come to better understanding operating systems is implementing FreeDOS on my 286/386 builds, where I was adding core BIOS routines to support FreeDOS. So, can I hack my way through this and develop and operating system? Time will tell. So what is an...

Continuing my W65C265S project series, I am at a nice milestone where I have a second version of a PCB (actually, a pair of PCBs) -- with significantly expanded functionality from my first PCB. For more background on my work on this up to this point, check out rehsdonline.com/post/w65c265s-single-board-computer . My goal in this post is to work through the two PCBs in the rendering below. This post will be updated as I work through the design and build. [February 07, 2026] I have received in...