I'll point it out to you. Maybe someone will be interested.
See
here (kind of Wikipedia)
For glue logic it only uses two PALs to program with a Windows software (free download).
Feally very simple, I didn't understand if there are PCB gerbers and/or a KiCAD or EagleCAD project
I haven't yet investigated too much, I found it while looking for information on the toolchain for m68k to integrate with a libc {uclibc, musl, ...}.
And found that, among the various entries in Wikipedia, there is a link to a github repo,
here, for building a complete toolchain, including not only gcc but also a second C compiler Vbcc!!!
Enjoy it, happy hacking