Hi all,
Perhaps you already noticed. There are efforts to resurrect true 16-bit only x86 GCC port [1][2]. I added it coreboot cross toolchain script.
https://review.coreboot.org/#/c/19711/
You can compile it ./buildgcc -j4 -p ia16-elf
So far, I only tried to compile some simple programs, but I believe it could be handy for SeaBIOS 16-bit code, which could be true 16-bit.
Or, if someone ever does SeaBIOS port to xi8088 board [3] which uses 8088 or NEC v20
Thanks Rudolf
[1] https://gcc.gnu.org/ml/gcc-patches/2017-04/msg00082.html [2] https://sourceware.org/ml/binutils/2017-04/msg00012.html [3] http://www.malinov.com/Home/sergeys-projects/xi-8088