aftyde Posted March 24, 2017 Share Posted March 24, 2017 Hi All, Brought a whole bunch of parts back to my place in Manila - and it seems like my first guess was right. Bad 32K memory card. All is running now - and I am happy. However, I am confused about a few things... The Corcomp Diagnostics 32K card test reported the original card bad. The Tursi 32K test passed it... (thinks the old card is good) With the old card all apps requiring the card lock / never start and work fine with the tested good card I brought. So what's up with that?!? What would cause a card to fail? (I am guessing crappy 110v converters here... who knows... I should pull out my multi-meter to make sure I'm not feeding the PEB 150 VAC... LOL) Secondly - anyone out there know how to repair a 32K card? Seems a shame to chuck it away. Or perhaps a guide - and I can give it a shot myself??? Cheers, Arthur... Quote Link to comment Share on other sites More sharing options...
+jedimatt42 Posted March 24, 2017 Share Posted March 24, 2017 Fred Kaal has a good writeup on memory testing: http://www.ti99-geek.nl/Projects/memtest/memtest.html It might help narrow down the particular of the problem. -- I've not seen Tursi's 32k test. The Corcomp Diagnostics was a pretty week test in my opinion. Funny that it detects the failure. It would pass on my breadboard 32k card development when games would clearly show memory bus failures. Consequently, I wrote a burn in test, so I could be confident the problems are gone. If you want the burn-in test, mostly only useful once you believe you've fixed the board: https://github.com/jedimatt42/ti994a-32kmemtest/releases -M@ 2 Quote Link to comment Share on other sites More sharing options...
Tursi Posted March 24, 2017 Share Posted March 24, 2017 I don't think I have a 32k card test...? 2 Quote Link to comment Share on other sites More sharing options...
Opry99er Posted March 25, 2017 Share Posted March 25, 2017 (edited) I don't remember who wrote it, but there was a test I remember that did a cycle loop and maybe a checksum to determine if all memory addresses were functional/non-corrupted.... Edited March 25, 2017 by Opry99er Quote Link to comment Share on other sites More sharing options...
RXB Posted March 25, 2017 Share Posted March 25, 2017 I seem to remember a XB Memory Tester program. Also one for the 128K SAMS comes to mind. Quote Link to comment Share on other sites More sharing options...
aftyde Posted March 26, 2017 Author Share Posted March 26, 2017 Whoops - need to clear your good name... a Senior Moment on my part... here is a screenshot of the test that's calling a bad card good. It was part of a FlashROM99 collection I downloaded and copied to an SD card. I don't think I have a 32k card test...? Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted March 26, 2017 Share Posted March 26, 2017 That would be Matt's test from heck Sent from my LG-H830 using Tapatalk Quote Link to comment Share on other sites More sharing options...
+jedimatt42 Posted March 27, 2017 Share Posted March 27, 2017 Try my 1.3 version from my earlier post in this thread. I'm curious if that still calls your bad card, good. -M@ Quote Link to comment Share on other sites More sharing options...
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