This is the helloneo.ca page about the SD-8516. The quickest way to go from here is the SD-8516 wiki, or, just load it up online and type HELP.

• load the SD-8516 / VC-3 online now
• go to the SD-8516 wiki

Note that I’ve already moved on to the VC-4 project, which is just the SD-8516 rewritten in C. That will become the new platform going forward, but the VC-3 (the WASM version) is scheduled to be backported for 100% compatibility.

SD-8510

The SD-8510 was the previous design. You can use the SD-8510 online now. The SD-8510 VC-2 allows you to enter assembly language programs with line numbers. Try typing “HELP”.

• Part I: Zero Page Technology
• Part II: The SD-8510 Unveiled

JTTD

JavaScript Terminal demos. Info on the wiki. This is the oldest version of the SD system, culmulating in VC-1.

• 2020-2023 JTTD3 finally achieves VC-1 as a concept
• 2019 JTTD2 (terminal idea)
• 2017-2019 JTTD1 demo (interface concept design)

Not much work occurred during this time because I was working as an English teacher, but my off hours sure were full.

---

Published @ June 26, 2026 3:58 am