Nat wrote:Concerning testing of the 128MB SDRAM modules, the older versions of the memory test application I do not think even test the full 128MB of memory, so are ineffective as a test.
The older versions certainly offer less accurate testing and reporting of errors with 32MB modules when I have tested them in the past, I have not tested any of my 128MB modules with the earlier versions, as far as I am aware the current release is what's recommended for testing all memory modules.
memtest_20190920.rbf is what I use.
Real world testing is useful, my test procedure is as follows for my 128MB modules, test with the Archie core, Minimig core, GBA core, Neo Geo core, and specifically Metal Slug 3 and the Bad Apple demo on the Neo Geo core. Hope this might be of use.
JimDrew wrote:With this version, 32MB Alliance based memory chips fail at 167MHz and 32MB Winbond based memory chips fail at 167MHz and 160MHz. All other memory test programs pass fine at 167MHz with the same Alliance and Winbond modules. So, this seems to be a step backwards.
Sorgelig wrote:Test version with new clocking. It should be consistent among all clocks.
Sorgelig wrote:No problem with right angled connector. Everything works as expected.
RETR0Gamer wrote:Hey Everyone! Thanks for all the work you guys are putting into this project. I recently got into Mister and I love it. I current have a cheap 32MB Sdram module and I wanted to try my hand at building my own 128MB Sdram module. Anyway, I ordered some of the v2.4 pcbs from OSHPARK. The files had some naming errors when trying to upload the gerber so I emailed their support and they renamed them and sent me back the fixed file for their system. I just received the boards and I was reading through this forum and saw that a few people said their boards from OSHPARK weren't manufactured correctly and had to ask for a refund. So now I'm concerned that my boards are going to have issues, too. Can you take a look at these pics of my boards and see if there are any obvious issues you can spot with them? Last thing I want to do is spend the time building these and have them be faulty. Thanks!
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