Richard, Thanks for your suggestions. I tried them, however, the system still hangs when jumping to boot code at 0x7c00.
> Examine this file and see if it has the BIOS extension signature of > 0xaa55 (or 0x55aa depending on what endian you view it as) You should > also see some text iding the bios. I enabled all shadowing and found 0xaa55 and bios copyright information at the beginning of file. > In ./util/ADLO/bochs/bios/rombios.c there should be a #define > DEBUG_SERIAL. Set that to 1 and all of the bios messages will go out > the serial port. My source has DEBUG_SERIAL and by default it is enabled. Nothing appears for this default configuration. I also tried to disabled DEBUG_SERIAL, but no video appears either. Right now I suspect that something wrong with loder.s. My question is how to debug loader.s? Thanks again. Simon Cheng www.msica.com _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios

