Messages in this thread | | | Date | Wed, 23 Apr 2003 16:05:45 -0400 (EDT) | From | "Richard B. Johnson" <> | Subject | Re: Searching for string problems |
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On Wed, 23 Apr 2003, Andrew Kirilenko wrote:
> Hello! > > Big thanks to all of you. Now I'm starting to understand how it's working. > Here is current version of my code: > > --> > jmp cl_start > cl_id_str: .string "STRING" > cl_start: > cld > movw %cs, %ax > movw %ax, %ds > movw $0xe000, %ax > movw %ax, %es > movb $0, %al > xor %bx, %bx # start of segment > cl_compare: > movw $cl_id_str, %si > movw $cl_start, %cx > subw %si, %cx > decw %cx > movw %bx, %di > repz cmpsb > je cl_compare_done_good > incw %bx > cmpw $0xffff, %bx # are we at the end of segment > je cl_compare_done > jmp cl_compare > cl_compare_done_good: > movb $1, %al > cl_compare_done: > <-- > > And this code won't work as well :( > > Unfortunately, I can't start DOS and check, cause there is no video and > keyboard controller on that PC. > > Best reagrds, > Andrew.
Change this:
movw $0xe000, %ax
To: movw $0xf000, %ax
... like I told you. The BIOS ROM contents, the stuff that has the serial number _must_ start where I told you.
Cheers, Dick Johnson Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips). Why is the government concerned about the lunatic fringe? Think about it.
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