[HECnet] VMS question

[Johnny Billquist]

On 2015-08-10 17:04, Dave McGuire wrote:
>
>    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)

Could you put a VAX 7000 CPU in a AS8400 cabinet?

	Johnny

>
>                   -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
>>
>
>


-- 
Johnny Billquist                  || "I'm on a bus
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