Re: How does 770ED memory layout really work?

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From: Bill Morrow - http://thinkpads.com (penzance_at_icanect.net)
Date: Thu Sep 03 1998 - 16:49:49 EDT

Ken..

Ken wrote:
>
> Bill Morrow wrote:
> >The 128meg Part is available for the ThinkPad 770 and 600
> >770ED will show 298megs with two of these parts..
> >(128+128+32=288 * 1024 = 294 + (apparently) the 4meg of video + 298megs)
>
> Hey, on this subject, when I bought my 770ED, and ordered an extra 64MB, I
> was surprised when I installed the 64MB to find that one of the two memory
> expansion slots was already filled. I'd assumed there was 64MB in the
> machine WITHOUT filling any expansion slots. Is it actually that the
> machine has 32MB in the machine, plus comes with 32MB taking up one of the
> two expansion slots, and you have to get rid of 32MB in order to install
> more than one memory card?
yes..

>
> Also, is there any problem with having memory cards of two different sizes
> in the machine? I.e. If I bought a new 128MB card, could I put it in there
> to supplement the 64MB card?

no

it has always been the practice of IBM (and i suppose others) to add a
memory upgrade rather than re-design the planar board when specing more
memory on a machine..

no problem having two different 'size' memory upgrades on any thinkpad
that i can recall..
i just tried that with these new 128meg parts and a 64meg part..

even on the 700 you could use two DRAM cards..

>
> Thanks,
>
> Ken
> kenzo_at_free-music.com
> http://free-music.com/ken 

-- 

Happy Trails...

** Bill Morrow **   :-)
WEB page http://thinkpads.com
Thinkpad User Community: http://thinkpads.com/enter.html
bill_at_thinkpads.com, penzance_at_icanect.net
770ED-5AU, 770-1AU, 760ED, 701C(4), 755CE, 750C, IBM WorkPad

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