Richard Smith schrieb: >>>>INSTALL REAL-MODE IDT >>>>DO THE VGA BIOS >>>>found VGA: vid=1106, did=3122 >>>>rom base, size: fffc0000 >>>>BAD SIGNATURE 0x8 0x1e > > > I missed this earlier. This indicates that the loader do_vgabios() > was unable to find the bios extension signature of 0xAA55 using the > base offset of 0xfffc0000. > Your video bios was _NOT_ copied to ram. > > >>>biosint: # 0x10, eax 0x4f14 ebx 0x18003 ecx 0x1 edx 0x0 >>>biosint: ebp 0x17fa8 esp 0xffa edi 0x0 esi 0xffff70b6 >>>biosint: ip 0x8e22 cs 0x0 flags 0x46 >>>BIOSINT: Unsupport int #0x10 >> > > This is probally the result of vga_enable_console() which is called > regardless of what happens in do_vgabios() so I think its just running > bogus code. > > Your rom image does not have the vga bios located correctly. You must > locate the video bios in your ROM image such that it will get > referenced at 0xfffc0000. >
Well, it could be that the dd comand to get the video.bios from original bios has had the false values for skip. The epia-ml vgabios is smaller than the epia-m vgabios and eventually located on another place in memory However, I have tested the epia-m vgabios extracted with award bios editor from the older bios version, and the vga console comes up, if the kernel is loaded :D Unfortunatly, there is no fb0 and X fails. Doesn't matter, I have also extracted the original vga bios from bios and will try it again. > For a ROM image that is 256k in size that means you need a 64k VGA > bios image located at offset 0x0. The linuxbios image can then start > at offset 0x10000. > > If you do a 'hd' on your ROM image file the very first word you see > should be 0x55aa which is the 0xaa55 rom signature in little endian. > I will have a look ;) > Since the build system should have done all this for you I'm guessing > that your vga bios image is not valid. > Jip, i totally agree. The first vgabios i get with dd is shit :D > -- > Richard A. Smith -- LinuxBIOS mailing list LinuxBIOS@openbios.org http://www.openbios.org/mailman/listinfo/linuxbios
