13 Mar
2004
13 Mar
'04
5:46 a.m.
On Tue, Mar 09, 2004 at 08:10:32AM -0700, ron minnich wrote:
On 8 Mar 2004, Eric W. Biederman wrote:
rombios.c or whatever the PCBIOS compatibility layer winds up being must be 16bit code, (even if it has 32bit extensions all over the place). I'm not certain gcc can be convinced to do a reasonable job of 16bit C code.
what's wrong with what we did for vga extensions, a 16-bit hook into 32-bit code? It has worked well for those who wanted native vga.
Some OSs call 16-bit BIOS services in VM86 mode. In that case you can't switch to 32-bit mode by yourself.
Eric, how about modifying GCC to generate true 16-bit code?
--
Takeshi