What do you mean by bus reset?

Hi All,

As a part of the testing, I am supposed to run a script which
continuously send reset signals to bus and device.

I am not understanding what exactly is bus reset? and what will happen
because of that?

I tried googling but failed, so thought of posting it here. Please
help.

Thanks and Regards,
Prasad.

Prasad wrote:
>
> As a part of the testing, I am supposed to run a script which
> continuously send reset signals to bus and device.
>
> I am not understanding what exactly is bus reset? and what will happen
> because of that?

Device reset: Send TARGET RESET message to one target device.
Bus reset: Activate /RST signal on SCSI bus to reset all devices.

What should happen:
Device reset:
One target device should reset itself, all other devices should hold
state. Only work if the bus is still operating and the target is still
able to process the message.
Bus reset:
Hard reset all SCSI devices on the bus. The data lines on the bus are
not used, so it can work even if the bus is frozen in busy state.


Micha

Prasad wrote in news:7054a9ce-08fe-46c0-875a-c6ef15e0da29@j1g2000prb.googlegroups.com
> Hi All,

> As a part of the testing, I am supposed to run a script which
> continuously send reset signals to bus and device.

Of course you are.

>
> I am not understanding what exactly is bus reset? and what will happen
> because of that?
>
> I tried googling but failed, so thought of posting it here. Please
> help.
>
> Thanks and Regards,
> Prasad.