SCSI Specs & Comparisons - answers (long) (fwd)

[Justin T. Gibbs]

>> This is not correct.  The "default" speed is 3.3 Mo/s, which is the maximum
>> asynchronous operation speed.  If the devices so negotiate, they can operate
>> synchronously at 5 Mo/s.
> 
> Is the asynchronous rate is limited like that?  I've read blurbs from
> Symbios that claim that they've achieved 7MHz asynchronous operation
> between two of their more recent controllers.  Maybe there is a limit in
> the definition, and Symbios were just blowing steam?

There is no "defined" limit on the asynchronous transfer rate.  It is
essentially controlled by the signalling speed of the two devices and the
length of the cable.  3.3MB/s is a "good guess" for about how fast two
average speed devices will communicate in a typical cabling environment.

--
Justin

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