DEC MM15 core mem found

[Pontus Pihlgren]

On Tue, Dec 08, 2015 at 09:42:27PM +0000, Rich Alderson wrote:
> 
> Flip Chip technology was invented for the PDP-7, after the failure of the
> large System Modules used in the PDP-6.  The only part of the PDP-7 which
> uses System Modules(TM) is the DECtape controller for the 555 DECtape
> drives.

After posting I had a nagging feeling I was wrong. I recall seeing both 
System Modules and flip chips(light blue?) in relation to PDP-7. Thank 
you for clearing that up.

What where the failure(s) with System Modules in the PDP-6? cost? 
reliabilty?
 
> If you'd like to visit the museum, I'll happily show you the internals of
> a running PDP-7. :-)

Oh yes! If/when I cross the atlantic you will have to show me internals 
of _everything_. Can you buy a five-day pass? :-)

Thanks,
Pontus.