ClearSky

From where can I download LADS assembler and MLX program, which are needed to work with the book "The Second Book of Machine Language" by Richard Mansfield?

I can't stand RetroArch. It's too bloated. Altirra is amazing!

This one looks good, judging by the table of contents.

Do you know of any good books about 3D graphics programming for the '80s home computers (both 8-bit and 16-bit)?