On Thu, 1 Oct 1998, Anders Magnusson wrote:

> > On Wed, 30 Sep 1998, Jim Bender wrote:
> > >The controllers back in the old days (Massbuss, et al) seemed pretty responsive
> > >even if the data flow was slow by today's standards.  
> > 
> >   I dunno, man...they moved data pretty fast...and they handled load very
> > gracefully.  Anybody have the actual data transfer rate specs handy?  I've got
> > 'em at home if not..
> > 
> It is dependent of device type. RP06 data rate is 833k/s, RP07 with
> interleaving is 1.3MB/s and without 2.2MB/s. I think that only the
> DEC-2040 and above could handle RP07's without interleaving; a 11/780
> can easily be overrun at that data speed. (I have tried :-)

I actually tried an RP07 on an 11/70, and it did work without
interleaving, but data got lost pretty fast if more than one sector was
read, so it wasn't really usable. :-)

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt@update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol