[Prev][Next][Index][Thread]
Re: hot-swappable SCSI
On Thu, 20 Feb 1997 01:27:33 +0200 (IST), you wrote:
>On Wed, 19 Feb 1997, Yuval El-Hanany wrote:
>
>> The trick used to be that they had this extra leg in the connector which
>> was shorter than the rest. When you removed the device it would be the
>> first leg removed and would cause whatever action is required before
>> removing the device from the bus.
>
>Extra long and extra short, actually. Extra long for VCC and extra long
>for ground.
That is, Extra long for ground, and extra short for VCC.
Hot plug guidelines:
First plug ground
Then plug the data signals
And last, plug VCC
When removing the exuipment, do the reverse order.
The PCMCIA connectors are also built this way.
>---MAV (finger for PGP signature block)
>My opinions are my own and only my own. Standard disclaimer applies.
>Marc A. Volovic (marc@cs.huji.ac.il) Linguists do it cunningly
Udi
Follow-Ups:
References: