This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
L Break Into Program
breakintoprogram.co.uk
did:plc:ulsrokhbdwzathvrvahn76e2
Okay, tried out the method that @luigithirty.bsky.social suggested, in C to start off with, and it works a treat. Next step is to convert this to Z80. I'm pretty sure that this'll simplify the circle drawing somewhat. Devil in the detail, etc.
2025-10-11T22:48:05.589Z