I've been referred here from a thread in another forum :-)
I didn't know you guys were coding this (hello Chui! how r u? :-).
I did yesterday my own implementation of a zx +2A tv output.
My code is currently just a prototype prior to something even better. I'd like to improve even more the video output, by adding more tips, and coding a video filter for every spectrum out there, since the screen differences change among different spectrum models.
The final algorithm/library will be MIT or PD licensed and free of charge of course :-)
Can you guys supply hi-res photos using old TVs and RF cables? I'd like all the photos to be bios spectrum screens (128 menu, 48 sinclair ltd research message, etc) rather than games.
Take care,
rlyeh.
original image:

filtered image:

more samples:





