Brad Loomis <[log in to unmask]> wrote:
> Hello,
> I'm working on my daughters 486DX, and I'd like some assistance from you all
> who I know have answered this question a bunch of times. So one more time,
> the memory module has nine chips on one side, markings of tag:
> E945470 SE94
> 4MB             -70
> 4MX9            P
> J001            091A
>
> My question is what type is this and is it still available? Board has eight
> 30 pin slots with four of the above and four open, for 16MB. I'd like to up
> to 32MB. What would be the best arrangement to install? Are 8MB modules
> available and do they work with the existing 4-4MB modules? Does the order
> of install matter?
> Thanks to all.
> Brad Loomis
> Morro Bay, CA

These are most likely 4M parity SIMM's.  4MB is the largest you will find in 30
pin SIMM's, so the only expansion you will be able to do is to add another 4
SIMM's (they are getting scarcer, but you should still be able to find them).
The '-7' indicates they are 70ns.

When asking for them at a store, you should ask for 4MB (megabyte) 30 pin, 70ns
(nanosecond) parity SIMM's. You should also insist on the 9 chip variety as well
as some people have had problems mixing 3 chip and 9 chip in the same system.


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