Messages in this thread |  | | | From | "Markley, Todd" <> | | Subject | RE: Hangs after "Loading" but before "Uncompressing" | | Date | Wed, 26 Jan 2000 23:48:56 -0500 |
| |
Dick: I was able to get the debug prints to work in the setup.S and found that things are ok until "call video". It looks like it never returns from the video.S code. With it hanging in the video routine I tested setting "vga=normal", and "vga=ask" with no change. I have removed the "3dfx voodoo3 2000 PCI" video card, and tried another normal Trident SVGA card, but it still hangs the same way. My motherboard is using American Megatrends AMIBIOS 6/30/98. Next I tried to comment out the "call video" in setup.S which allowed things to continue, but this hangs even on my laptop. I guess the video subroutine is setting someting that is needed. Unless someone has an idea about what might cause this problem I plan to continue my debugging in the video.S.
Todd
-----Original Message----- From: Richard B. Johnson At the top of the file, line 179, you will see a routine called prtchr. It prints a character in the AL register. Just ahead of it is prtstr, it prints a string, but don't use it because you have to set the DS register, restore it later, etc.
Just, moving through the code, do:
mov 0x30, al # ASCII '0' call prtchr
.... more code, possible hung loops mov 0x31, al # ASCII '1' call prtchr
... etc.
You will have 0123 on the screen if it hangs between '3' and '4'.
Easy! Have fun.
Cheers, Dick Johnson
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
|  |