Re: How to debug by COM port

Try reducing the baud rate to something like 57600 or 19200 in the boot.ini
and ensure the machine with winddbg is capable of the same rate.

-andy

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"C.C. Wu" <cc_wu@xxxxxxxxxxxx> wrote in message
news:uIGjBlg2FHA.3912@xxxxxxxxxxxxxxxxxxxxxxx
> Hi all,
> I'd like to get embedded XP debug infomation of kernel boot procedure. I
> have installed Windows Debugger Version 6.5.0003.7 in a host computer,
> and
> I boot my system from a target computer.
> The target computer's boot.ini is
> [boot loader]
> timeout=0
> default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
> [operating systems]
> multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP Embedded" /debug
> /debugport=com1 /baudrate=115200
> .
>
> I launched WinDbg on my host computer, and executed Kernel Debug, but I
> can
> not make host connect with target.
>
> Microsoft (R) Windows Debugger Version 6.5.0003.7
> Copyright (c) Microsoft Corporation. All rights reserved.
>
> Opened \\.\COM1
> Waiting to reconnect...
>
>
> I have tested communcation between them. The host always sends 0x69 0x69
> 0x69 0x69 0x06 0x00 0x00 0x00...., so the COM port works normally.
>
> Does anybody know what's going on with my embedded XP? Do I need some
> components for kernel debug?
>
> Thanks.
> C.C. Wu
>
>
>
>
>
>
>


.

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