Can we access hardware without any Driver?

NTDEV
1

Hi All,

Can anyone suggest me whether I can access the hardware registers (some
Read/Write onto the registers) with out installing the drivers for that
hardware, I mean without having the pointer to its FDO? Is there any tool
at least which can attempt some read/writes onto the hardware?

Regards,
–Vish

2

Well… not really. You can try using a generic driver such as Walter
Oneys, or some other flavor.

-J

At 06:28 PM 4/15/2003, you wrote:

Hi All,

Can anyone suggest me whether I can access the hardware registers (some
Read/Write onto the registers) with out installing the drivers for that
hardware, I mean without having the pointer to its FDO? Is there any tool
at least which can attempt some read/writes onto the hardware?

Regards,
–Vish

You are currently subscribed to ntdev as: zeppelin@io.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

3

you can use !ib and !ob in windbg (or kd)

-p

-----Original Message-----
From: Justin Frodsham [mailto:zeppelin@io.com]
Sent: Tuesday, April 15, 2003 9:54 PM
To: NT Developers Interest List

Well… not really. You can try using a generic driver such
as Walter Oneys, or some other flavor.

-J

At 06:28 PM 4/15/2003, you wrote:
>Hi All,
>
>Can anyone suggest me whether I can access the hardware
registers (some
>Read/Write onto the registers) with out installing the
drivers for that
>hardware, I mean without having the pointer to its FDO? Is there any
>tool at least which can attempt some read/writes onto the hardware?
>
>
>Regards,
>–Vish
>
>—
>You are currently subscribed to ntdev as: zeppelin@io.com To
>unsubscribe send a blank email to xxxxx@lists.osr.com

You are currently subscribed to ntdev as:
xxxxx@microsoft.com To unsubscribe send a blank email to
xxxxx@lists.osr.com

4

Use a debugger…(SoftICE or WinDbg)

----- Original Message -----
From: “VishwanathM”
To: “NT Developers Interest List”
Sent: Wednesday, April 16, 2003 9:58 AM
Subject: [ntdev] Can we access hardware without any Driver?

> Hi All,
>
> Can anyone suggest me whether I can access the hardware registers (some
> Read/Write onto the registers) with out installing the drivers for that
> hardware, I mean without having the pointer to its FDO? Is there any tool
> at least which can attempt some read/writes onto the hardware?
>
>
> Regards,
> --Vish
>
> —
> You are currently subscribed to ntdev as: xxxxx@moschip.com
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>

5

Hello VishwanathM,

Wednesday, April 16, 2003, 6:28:43 AM, you wrote:

V> Can anyone suggest me whether I can access the hardware registers (some
V> Read/Write onto the registers) with out installing the drivers for that
V> hardware, I mean without having the pointer to its FDO? Is there any tool
V> at least which can attempt some read/writes onto the hardware?

http://www.wideman-one.com/gw/tech/Delphi/iopm/ try this. it gets your
user level app access to in/out instructions on selected ports.
modifying the local tss’s i/o permission map. altough it is very
limited, it’s maybe what you’re seeking for.

–
Best regards,
Ivona Prenosilova

6

> http://www.wideman-one.com/gw/tech/Delphi/iopm/ try this. it gets
your

user level app access to in/out instructions on selected ports.
modifying the local tss’s i/o permission map. altough it is very
limited, it’s maybe what you’re seeking for.

He will not be able to get the physical addresses for DMA anyway.

Max