[HECnet] VMS question

[Dave McGuire]

  Well, DEC-7000, but any difference between that and the AS8400 are not
clear to me.  I have been all around inside both of those machines and
have seen no difference, other than the design of the card ejector
handles. (which are interchangeable)

                 -Dave

On 08/10/2015 10:59 AM, Hans Vlems wrote:
> Thanks Dave, never realized that a VAX 7000 upgrade resulted in an Alpha 8400.
> Both quite expensive boxes at the time. The 7000 was rated at a little over 60 VUPS, wasn't it.
> 
> 
> Verzonden vanaf mijn BlackBerry 10-smartphone.
>   Origineel bericht  
> Van: Dave McGuire
> Verzonden: maandag 10 augustus 2015 16:50
> Aan: hecnet at Update.UU.SE
> Beantwoorden: hecnet at Update.UU.SE
> Onderwerp: Re: [HECnet] VMS question
> 
> On 08/10/2015 10:35 AM, Hans Vlems wrote:
>> What I can remember of. 6000 model 4000 was that it had a fast XMI
>> bus that held cpu's, memory, fast controllers (ci and the kdm‎) and
>> connected to the BI bus(ses) that held the slower controllers. The
>> 7000 didn't have that? I know that the 7000 was "alpha ready", which
>> I think was a box swap.
> 
> There's really no commonality between the 6000 and the 7000; they are
> very different machines in nearly every way.
> 
> The 7000's processor/memory interconnect is LSB ("LaserBus"). LSB
> "nodes" are either processors, memory, or an LSB<->XMI bridge. The
> latter connects via a ribbon cable to an XMI card cage in the bottom of
> the 7000 chassis, for I/O controllers.
> 
> The Alpha "version" of that machine is the 8400. The processor/memory
> interconnect is TLSB ("TurboLaserBus"), and an LSB-based VAX can be
> in-cabinet upgraded to a TLSB-based Alpha system.
> 
> -Dave
> 


-- 
Dave McGuire, AK4HZ
New Kensington, PA