That would be me, unfortunately there are no project pages I was just swamped 
with other things and dropped the ball :(

If you have questions etc please feel free to email me directly.

From: M100 
<[email protected]<mailto:[email protected]>> 
on behalf of William stewart 
<[email protected]<mailto:[email protected]>>
Reply-To: <[email protected]<mailto:[email protected]>>
Date: Friday, August 23, 2019 at 4:46 AM
To: <[email protected]<mailto:[email protected]>>, 
<[email protected]<mailto:[email protected]>>
Subject: Re: [M100] Need help with bad RAM identification and replacement

Can anyone provide the project page for the
OSHPARK contributor Stardust?

To be clear, I'm looking for the project page, where one assumes the projects 
are discussed in detail, not the OSHPARK Link where one can order the PCBs.

TIA

William Stewart

Sent from my iPhone

On Aug 22, 2019, at 10:41 AM, 
"[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>> wrote:

I ended up going the OSH Park route.  I was pleasantly surprised to find out 
that it costs the same $6.30 if you order 1 board or 3 boards.  Plus I chose 
the free shipping.

Also ordered the other parts from Digi Key.  So... total cost to me was under 
$25 for everything shipped.  This is enough parts to build 3 of them.  Not too 
bad.

Thanks for the tip!

Chad




On Wednesday, August 21, 2019, 07:18:31 PM CDT, Fugu ME100 
<[email protected]<mailto:[email protected]>> wrote:


>From A000H to BFFFH is Option RAM #2 based on figure 3-5 in the 100 Reference 
>Manual.  This would cover the bad RAM.  So this looks correct.

If it is a Model 100 the modules were available form Arcade Shopper 
https://www.arcadeshopper.com/wp/?page_id=11#!/8k-RAM-module-for-Model-100/p/104430801/category=28313042<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.arcadeshopper.com%2Fwp%2F%3Fpage_id%3D11%23!%2F8k-RAM-module-for-Model-100%2Fp%2F104430801%2Fcategory%3D28313042&data=02%7C01%7C%7Cfad5f45a1462444cb82e08d727bf8cad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637021575957814064&sdata=Zm2zYgxccp4APvqynwnMJgs1KIM%2FwyZl4GGra50UlRo%3D&reserved=0>
  but they appear to be out of stock.

There are a few list contributors who also build 100 modules they might have 
some built and OSH Park has the PCBs to build your own modules if you want to 
go down that route for example:  
https://oshpark.com/shared_projects/V0tpeuMg<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Foshpark.com%2Fshared_projects%2FV0tpeuMg&data=02%7C01%7C%7Cfad5f45a1462444cb82e08d727bf8cad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637021575957814064&sdata=p3fN0Ls1IUL4LD%2FBIaqIthOXGU4a2d7PbPIC2tMTbHw%3D&reserved=0>
 there are others out there


From: M100 
<[email protected]<mailto:[email protected]>> 
on behalf of 
"[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Reply-To: <[email protected]<mailto:[email protected]>>
Date: Wednesday, August 21, 2019 at 4:31 PM
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: [M100] Need help with bad RAM identification and replacement


Can someone verify for me that B000-BFFF would be part of the M7 (Option RAM 
#2) RAM chip?  Of the four RAM chips, this is the second one from the left.

Second question is... where can I buy replacement RAM for this?  I am good with 
a soldering iron so I realize I will have to desolder the existing bad RAM and 
socket it and pop in the new RAM.

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