Bibliography
From SpecNext Wiki
ZX Spectrum Next Documentation
docs Directory of the Distribution
- https://gitlab.com/thesmog358/tbblue/-/tree/master/docs , especially note the nextzxos folder.
Next-specific Books
ZX Spectrum Next Assembly Developer Guide by Tomaž Kragelj
- Available as a free to download PDF https://github.com/tomaz/zx-next-dev-guide/ or a printed coil bound book.