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Re: More info A curious small circuit baord from a "]["?



greg@apple2.com wrote:
> 
> In article <38966FD9.CE4156EC@ripco.com>,
> Jonathan Schattke <wizwom@ripco.com> wrote:
> >Bart wrote:
> 
> >> I am curious: if one pulled the 64k RAM on the motherboard, and
> >> replaced with 256k can it be addressed or is that a waste of time?
> 
> > Nope, it's a waste of time.  The hardware would not be able to access
> > any more RAM.
> 
> Would it be a suitable replacement for when the correct RAM chips go bad
> and the proper chips can no longer be obtained?  If it can only access a
> portion of the RAM, can it still access that portion reliably?  Provided
> suitable pinouts or adapters?

Yes, the 64K DRAM used 8 Rows and 8 collumns, the 256K used 9 of each.  The
extra address line should be grounded, then it will work fine.

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