[Info-vax] Databases versus RMS

[Johnny Billquist]

On 2012-04-21 07:45, Phillip Helbig---undress to reply wrote:
> In article<jmsje0$kq1$1 at news.albasani.net>, Jan-Erik Soderholm
> <jan-erik.soderholm at telia.com>  writes:
>
>>> Right.  This is why, in addition to HALT, there are both BOOT and
>>> RESTART options at the console.  These control what happens after a
>>> power cycle.  HALT stays at the console prompt, BOOT boots and RESTART
>>> tries to pick up where it left off, with the assumption that the
>>> contents of memory are still good...
>>
>> I guess that RESTART is a left-over from the "core" days.
>> Core memory keep it's data even without power. :-)
>
> Or RAM with battery-backup, which I think existed on some VAXes.

Yes. The VAX-11/78x and VAX-11/75x definitely could have this. I think 
it was also possible on the 86x0 machines, but I can't remember if I've 
seen any documents describing how it was implemented on that. The 
console subsystem definitely understands about the concept anyway.
(I also suspect the 11/730 and 11/725 could have this, but I'm not 100% 
sure.)

	Johnny

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