[comp.sys.mac] memory upgrading

jimvons@ashtate (Jim von Schmacht) (02/03/90)

In article <18000026@ux1.cso.uiuc.edu> cs225as@ux1.cso.uiuc.edu writes:
>
>Just out of curiosity, what happens if you install 2.5 or 4 megs in a SE
>and don't snip the resistor off?

You get a machine that won't boot up.  The resistor tells the system that
no simms exist with a higher density than 256k.  If do what you asked about
you'll get a first hand look at a sad mac icon.  Also, don't snip, desolder
the resistor - it's much easier to redo later!


-- 
Jim von Schmacht    Senior Member, Project Test Staff    Ashton Tate Corporation
Disclaimer: Standard Issue
--------------------------------------------------------------------------------
                 "It isn't the years - it's the mileage" -Indiana Jones

kam@dlogics.UUCP (Kevin Mitchell) (02/05/90)

In article <812@ashton.UUCP>, jimvons@ashtate (Jim von Schmacht) writes:
> You get a machine that won't boot up.  The resistor tells the system that
> no simms exist with a higher density than 256k.  If do what you asked about
> you'll get a first hand look at a sad mac icon.  Also, don't snip, desolder
> the resistor - it's much easier to redo later!

No! Don't try to desolder the resistor. Four-layer boards are easily damaged
by heat. Much better to snip close to the surface, bend the resistor up 45
degrees, and you can drop a spot of solder on it to put it back if you have to.


-- 
Kevin A. Mitchell                (312) 266-4485
Datalogics, Inc                  Internet: kam@dlogics.UUCP
441 W. Huron                     UUCP: ..!uunet!dlogics!kam
Chicago, IL  60610               FAX: (312) 266-4473