On Fri, Apr 27, 2001 at 11:48:18PM +0200, Manuel Bouyer wrote:
> Hi folks,
> I've an interesting question: can a ESP100A on a SS20, running at 40Mhz,
> really do 10MB/s on the SCSI bus ?
> >From esp_sbus.c:
> 	        /* Min clocks/byte is 5 */
> 		sc->sc_minsync = ncr53c9x_cpb2stp(sc, 5);
> So 40/8 -> 8Mhz, so 8MB/s
> Before merge of the fas support, my disk probed as (on thorpej_scsipi branch):
> sd0: Sync (124.0ns offset 15), 8-bit (8.064MB/s) transfers, tagged queueing

It reports what it gets from drive I believe, if it changed I suspect that
'tick' time became different which is strange.

> 
> Now it probes at 10MB/s; and I suspect some of the problems with the
> esp driver comes from that (disk and controller arn't at the same speed).
> 
> --
> Manuel Bouyer <bouyer@antioche.eu.org>
> --