The 1394 bus driver create a pdo for each unit directory.
So if you have 2 unit directories you will have 2 PDOs.
If you have 2 hardisks having same unit directories, two pdo of same type
will be enumerated.
If you have a device with 2 different unit directories, say 1 for 1394
another for 61883,
then 2 different pdos will be enumerated. It is possible for you to have 2
different drivers to handle these different PDOs.
So in short a unit directory of 1394 is considered as a logical device for
windows.
regards
jeseem
mailto:xxxxx@hotmail.com
----- Original Message -----
From: “Zhou, James”
To: “NT Developers Interest List”
Sent: Wednesday, September 06, 2000 2:43 AM
Subject: [ntdev] RE: [ntdev]1394 driver loading
> One more question:
>
> If my 1394 contains two logical units that belong to same type, for
> instance, two IDE hard disks, how may time will the driver be loaded? Or
in
> another words, how many PDOs will be created for this 1394 device?
>
> Thanks
>
> James
>
> -----Original Message-----
> From: Zhou, James [mailto:xxxxx@asia.adaptec.com]
> Sent: Wednesday, September 06, 2000 5:34 PM
> To: NT Developers Interest List
> Subject: [ntdev] [ntdev]1394 driver loading
>
>
> Hi,
>
> I am new to 1394 driver and I just started working on a driver for SBP-2
> device. Can any body tell what information Windows needs from a 1394
device
> to load a driver for it? I.e., in addition to vendor ID, what else is
> needed? ChipID in InfoBlock? unit_spec_id? unit_sw_version? or
> unit_unique_ID leaf?
>
> Thanks in advance
>
> James
>
> —
> You are currently subscribed to ntdev as: xxxxx@asia.adaptec.com
> To unsubscribe send a blank email to $subst(‘Email.Unsub’)
>
> —
> You are currently subscribed to ntdev as: xxxxx@hotmail.com
> To unsubscribe send a blank email to $subst(‘Email.Unsub’)
>
>