[NTLK] eMate 300 Memory Upgrade

[Randy Glenn]

Duplicating the layout is probably not a huge problem these days - it's
locating compatible RAM and Flash memory. I don't think that stuff has been
made in about a decade and a half.

>From what I recall, the memory expansion board uses two 3.3V 16-bit wide 16
MBit Fast Page DRAMs, rated for 70ns access time. TC51V16160AFTS-70 on the
photo I have.

The E28F016SV Intel flash chip can be sourced on eBay for about $10 plus
shipping, per chip. RAM, I have had much less luck finding.

If anyone has any idea where to find the RAM, I'll make a PCB.

-Randy

On Mon, Apr 2, 2018 at 2:20 PM, Fritz Toch <birddog at me.com> wrote:

> I now have three eMates, but only one with the memory expansion. I took it
> out and gave it a long examination. It’s beyond my skill set to duplicate
> but not that complicated for someone with good Eagle chops and the
> now-ubiquitous fab operations that will make you a small run of pcbs. Oh
> and I contacted OWC a couple weeks ago and they said they don’t have it
> anymore. Ditto a couple of random RAM sellers that I turned up in
> searching. It really is elusive.
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