Booting an IBM MP 3000 S/390 System
geneb at deltasoft.com
Thu Aug 6 14:05:26 CDT 2015
On Thu, 6 Aug 2015, Guy Sotomayor wrote:
> In many cases more than one! ;-)
> But more to the point, having a separate processor handing the booting chores
> frees the
> main CPU from those tasks. Initialization can be a pain just look at the x86
> ISA and the
> hoops it makes the S/W (BIOS & OS) just to get to the point where the OS can
> really start
> it's own initialization! And that doesn't even cover the "magic" that goes
> on just so that
> the x86 CPU can fetch the first instruction.
> As folks have mentioned, a lot of larg(er) system have service processors to
> handle the
> booting chores. However, it's more than that. The service processor (as the
> implies) is doing a whole lot more than just booting. It is also responsible
> for running
> low level diagnostics and capturing the results of hard crashes for later
Thanks for the info Guy (and others!). The biggest machine I ever owed
was a VAX 8250 that I got straight out of the machine room at
Mannesmann-Tally in Kent, WA. Fun machine, but made my upstairs floor sag
noticeably(sp). It had four RA-81s and a TU-81+. :)
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
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