"Collins Chen" <"collins_chen"@ali.com.tw> writes:
> Dear Konstantin, > I guess maybe the GDT in "start32.inc" cause my switchingreal mode code > invalid. If some bit in GDT will be limitative to switching protected mode to > real mode? Add into the descriptor a 16 bit code segment. The procedore is: >From 32bit protected mode Switch to 16bit protected Switch to 16bit real mode. And of course freebios/tools/mkelfImage/elf32-i386/head.S already has code to do this. Eric