Integral RAM upgrade

[Tony Duell]

> 
> On 29 Feb 2008 at 23:40, Tony Duell wrote:
> 
> >> I would have thought the 5150 upgrade involved removing the 
> existing RAMs 
> > nad rpelacing them with larger-capacity chips, more like what I did to 
> > my HP9816.
> 
> Only the first row of 4116s needed to be removed.  The other three 
> rows were socketed.

'Removed' is not the same as 'unsoldered' :-). Only the first row needs 
to be unsoldered, ut all 4 rows need to be removed (if they're present). 

-tony