Re: Memory and storage question

[quadrajet1@aol.com (Quadrajet1)]

>    Hello,
>       I recently managed to snag a Rom 3 IIgs and started comparing it
>to the Rom 1. Noticed the chips for the onboard memory are (Rom 3)
>MCM511000AP10 vs the (Rom 1) D41464C-15. If this is an obvious answer to
>someone who understands hardware, forgive me. Was curious if the same
>could be applied to the Apple memory card (1MB) to turn it into a 4MB
>card simply by using the bigger chips. 

  Nope.  The 1 Meg chips have more pins on them, and they wouldn't fit to start
with.  Plus the card doesn't have the capacity to address them anyways.

>Really don't want to spend about
>$300 on new memory cards for my 3 GS's if there is any way possible to
>increase what is already there.

  I have several Sequential Systems 2 meg cards that can be upgraded to 4 Megs
with ZIP RAM chips.  I also have a few 1.5 Meg, 4 Meg and a 6 Meg card.  They
aren't new, but they are $100 each either.

>       Also noticed a few Rom cards being constructed but was curious
>about battery backedup ram being used for a solid state hard drive.
>Thought with the ridiculous amounts of memory per simm these days a 20
>meg or even 200 meg sshd wouldn't seem that impossible. (To those who
>lack the experience, everything seems possible) Any chance this would be
>an easier task than tracking down small scsi or ide drives that have
>probably reached failure rates anyway?

  Well, not easier, but to find some big company to market them is a slim to
none chance.  The market for such a card is extremely small now.

Raymond