[HECnet] VMS question

[Johnny Billquist]

On 2015-08-10 16:59, Hans Vlems wrote:
> Thanks Dave, never realized that a VAX 7000 upgrade resulted in an Alpha 8400.

Like I commented to Dave, this isn't really the truth of it. But anyway...

> Both quite expensive boxes at the time. The 7000 was rated at a little over 60 VUPS, wasn't it.

Depends on which 7000 we're talking about. The -600, -700 or -800. The 
-800 was more than twice the speed of the -600.

	Johnny

>
>
> 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
>


-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
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