A freely-licenced replacement firmware for the Sinclair ZX Spectrum.
Just like the original, it is based on the firmware for the Sinclair ZX81.
What’s finished?
The structure, labels, tables, tokens, reports, the font, a decent chunk of the floating-point routines, and a few other bits and bobs.
What’s missing?
File I/O, colour, pixel manipulation, the editor, some floating-point routines, and quite a lot of other stuff.
How do I get involved?
Go to the SourceForge project page at: