Where to buy USB2 debug cable?

NTDEV
1

Hi All

I can not find USB2 debug cable, required to connect Kernel Debugger to this PC. NET20DC from Ajays Technology is not available anymore, and I can not find any analogues.
Can you suggest any existing products or instructions how to build it up?

I have problem, connecting to WinDbg to customer’s PC, where the system locks up (looks like interrupt storm) with my HW and driver installed.
Unfortunately I can not change the system configuration, since the problem can not be reproduced with other configurations. System has Windows 7 64b, no COM ports on motherboard, but it looks like USB2 port can be used for debugging.

Thanks in advance

2

Can USB3 debug cable be used with WinDbg on Windows 7 ?
In WinDbg manual they mention Win 8 is required, but may be anybody got USB3 debug cable working with Win 7?

3

probably not. Your best bet is repro on a win7 system with firewire, but I
realize that might be a problem for you. You could try ebay. Somebody might
have one of the usb2 cables for sale there.

Mark Roddy

On Tue, Feb 21, 2017 at 10:13 AM, wrote:

> Can USB3 debug cable be used with WinDbg on Windows 7 ?
> In WinDbg manual they mention Win 8 is required, but may be anybody got
> USB3 debug cable working with Win 7?
>
> —
> NTDEV is sponsored by OSR
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4

Oh the other thing you could try is to activate the ps2 keyboard crash me
mechanism. See
https://support.microsoft.com/en-us/help/969028/how-to-generate-a-kernel-or-a-complete-memory-dump-file-in-windows-server-2008-and-windows-server-2008-r2
search for “How to generate a manual memory dump file by using the
keyboard”.

Mark Roddy

On Tue, Feb 21, 2017 at 10:42 AM, Mark Roddy wrote:

> probably not. Your best bet is repro on a win7 system with firewire, but I
> realize that might be a problem for you. You could try ebay. Somebody might
> have one of the usb2 cables for sale there.
>
> Mark Roddy
>
> On Tue, Feb 21, 2017 at 10:13 AM, wrote:
>
>> Can USB3 debug cable be used with WinDbg on Windows 7 ?
>> In WinDbg manual they mention Win 8 is required, but may be anybody got
>> USB3 debug cable working with Win 7?
>>
>> —
>> NTDEV is sponsored by OSR
>>
>> Visit the list online at: http:>> lists.cfm?list=ntdev>
>>
>> MONTHLY seminars on crash dump analysis, WDF, Windows internals and
>> software drivers!
>> Details at http:
>>
>> To unsubscribe, visit the List Server section of OSR Online at <
>> http://www.osronline.com/page.cfm?name=ListServer&gt;
>>
>
></http:></http:>

5

I’ve always had very spotty luck with the Ajay’s USB debugger. We used them for lightweight BIOS debugging.

Anybody try using a USB-to-serial adapter for debugging?

6

You can’t use the USB-serial on the debug target, but it works fine for the machine running WinDBG.

7

There is https://github.com/avivgr/teensy_debugdev