Booting an IBM MP 3000 S/390 System

[Antonio Carlini]

On 06/08/15 14:38, Jay West wrote:
> Gene wrote...
> -----
> One thing I don't understand - why can't the machine boot on its own?  Why
> would IBM design a computer that required another computer just to boot it?
> ----
> To report higher sales of OS2/Warp? ;)
>
> Not the only one though, ISTR the 11/780 used a 11/03 to boot?
>
I think many of the larger VAXen had another processor in there to boot.

The VAX 8500/8700/8000 used a PRO iirc.

I think the VAX 9000 used a Microvax II CPU as the boot processor.

I always assumed that DEC had a warehouse full of the whatever was used 
that they needed to shift :-)

Antonio