Oops, missed reply-to-all.
2009/3/22 Tijl Coosemans tijl@ulyssis.org:
I was reading through binutils documentation and came across this. Maybe it can be used to compile 16 bit tests.
3.2.4. 16-bit mode Binutils (2.9.1.0.25+) now fully support 16-bit mode (registers and addressing) on i386 PCs. Use .code16 and .code32 to switch between assembly modes.
Also, a neat trick used by several people (including the oskit authors) is to force GCC to produce code for 16-bit real mode, using an inline assembly statement asm(".code16\n"). GCC will still emit only 32-bit addressing modes, but GAS will insert proper 32-bit prefixes for them.
16bit mode is required for building bootloaders. The question here is, is it possible for Wine to run raw 16bit code when running under a *nix kernel, which typically (always?) run in protected mode? I believe it is not possible without some sort of 16bit emulator/wrapper (e.g., current win16 libs are actually compiled as 32bit).