Paired 68000 systems for fault tolerance - was Re: out-of-mainstream minis

[Johnny Billquist]

On 2015-07-04 17:09, Toby Thain wrote:
> On 2015-07-03 11:13 PM, Jon Elson wrote:
>> On 07/03/2015 09:11 PM, Toby Thain wrote:
>>> On 2015-07-03 8:09 PM, Glen Slick wrote:
>>>>
>>>> Apollo is the classic example of using plain 68K (two).
>>>>
>>>
>>> I always associate it with Tandem:
>>> http://www.hpl.hp.com/techreports/tandem/TR-86.2.pdf
>>>
>> Not sure what you are referring to, here.  Tandem did not use 68K
>> processors as the main CPU
>> in any of their machines.  (There could, possibly, have been 68Ks in
>> some of the peripherals.)
>
> Yes, you are right. The report gives some examples of dual 68000's in
> Tandem's peripheral subsystems.

Yup.

> I likely was thinking of Stratus, because I remember reading this before:
> http://pages.cs.wisc.edu/~david/papers/ibmsj1987_stratus.pdf

Unfortunately, that paper can slightly confuse you. They talk about 
68000-family, and if you read on, you'll find that the "current" models 
use the 68020...

	Johnny

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