I have been investigating it. It's not hard to target with my language
Kaj
First support would be through the cross-platform C backend. This would at least support the low RAM. As usual on an 8-bit, using the extended RAM would be trickier
Supporting native X16 features would need more funding
The C backend has considerable overhead, limiting program size, but this past month I have started on a native 6502 backend that generates machine code directly. This improves a lot over the C backend, but it's a lot more work, so also a matter of funding
Currently I'm working on the crowd-funding website. I will put all possible target platforms up for donations, and will implement them in order of highest funding
Kaj
I could use help in explaining REBOL to 8-bit people :-D