need some help with my screen of death

os64dev · Post by **os64dev** » Tue Jun 26, 2007 8:21 am

your code doesn't have any obvious mistake as AJ said so im confused about why it shouldn't work other then either the linker script is faulty or Puts and printf are.

AJ · Post by AJ » Tue Jun 26, 2007 8:23 am

If Qemu wouldn't run it, I just wonder if there is something more fundamental that is wrong. Does it crash, won't it read your disk image, what's the machine state when it crashes etc...?

Also, could it be that your registers contain the correct values but they aren't being interpreted correctly by printf?

Starting to clutch at straws here a bit...

Pyrofan1 · Post by **Pyrofan1** » Tue Jun 26, 2007 8:32 am

Does it crash, won't it read your disk image

it says

boot from hard disk 0 failed
FATAL: not a bootable disk

but now i'm sure the problem lies in Puts or Printf

mmiikkee12 · Post by **mmiikkee12** » Tue Jun 26, 2007 8:43 am

boot from hard disk 0 failed
FATAL: not a bootable disk

If it's a floppy disk image, use -fda floppy.img -boot a

Anyway, that looks like the printf I based mine on, which I know to work fine. I don't see any obvious problems with the other code either.

(Just out of curiosity, why is printf not defined in printf.h, and why do you have code in header files anyway?

Pyrofan1 · Post by **Pyrofan1** » Tue Jun 26, 2007 9:08 am

why is printf not defined in printf.h, and why do you have code in header files anyway?

1. because i don't want kernel files in include files
2. because i like my code neat
here's my linker script

Pyrofan1 · Post by **Pyrofan1** » Tue Jun 26, 2007 9:33 am

sorry for the dbl. post, but i found out that i'm getting an Invalid Opcode Exception.