> My PowerBook 145b has 4MB of RAM currently, and I'm using 5MB of virtual
> memory on the hard drive, but I get a lot of insufficient memory errors,
> and I end up having to reboot with extentions off just to use StuffIt
> Expander.  I know that the 145b only supports 8MB of RAM, but if I buy a
> 6MB RAM stick that is listed for a PowerBook 140/145/170, will it work
> with only 4MB to make 8MB, or will it just not work at all?  Thanks.

Two things: First, you need to enable 32-bit addressing in the memory control panel. 
Then your OS will be able to recognize more than 8MB, allowing virtual memory to do 
more. Currently, your VM isn't contributing more than 4MB worth of virtual goodness 
because you are still in 24-bit mode. I have a PB150 with only 4MB, but with 16MB of 
VM, Expander runs just fine (but slowwwwwwwly).

Next, why not buy a 4MB ram stick instead? It would likely be cheaper than a 6MB. I 
don't know for sure that you would have trouble with a 6MB stick on a 145b, but you 
don't want to find out the hard/expensive way whether the onboard ram has some 
conflict with part of the added ram. [That said, I don't believe that there is a 
problem; 2MB of that 6MB will not be enabled, so your total will end up being 8MB. 
That's my best guess, anyway.]

--Cheers,
Tom

--
Prof. Thomas H. Lee
Center for Integrated Systems, CIS-205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu
650-725-3709 voice, -3383 fax



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