P1394 Mail Archive: Re: P1394> Service Directory Proposal

P1394 Mail Archive: Re: P1394> Service Directory Proposal

Re: P1394> Service Directory Proposal

Akihiro Shimura (shimura@pure.cpdc.canon.co.jp)
Thu, 2 Dec 1999 21:33:52 +0900 (JST)


On Mon, 29 Nov 1999 06:39:37 -0800
Brian Batchelder <batchelder@ieee.org> wrote:
| We propose that PPDT implement service discovery in the feature
| directory of config ROM, as defined in clause 8.3 of PPDT_r0X.
| The Service_ID key should remain optional, as it is only needed
| by devices that wish to advertise services.

I'm sorry to bother you, but I'm almost lost in your statements to
remain the Service_ID in the feature directory.

There has been several discussions about the service discovery, and
one of the topic was that listing Service_ID in the configuration
ROM restricts the advertised services to very permanent ones because
of the nature of configuration ROM.

Is it enough functionality of the service discovery to advertise
services only when a device is plugged in? (Otherwise, issues bus

Is there any idea on the requirement for per service based discovery?


Akihiro Shimura

 Akihiro Shimura (shimura@pure.cpdc.canon.co.jp)
 Office Imaging Products Development Center 3