On 02/20/2018 11:21 PM, Francesco Messineo wrote: > > Yes, but thinking about it, a refresh failure would maybe not produce > almost the same values each 128 bytes (I don't really know anyway, > just guessing that it would just "zero" the bits more randomly). No. As I wrote before, an empty cell (meaning one that doesn't get refreshed) is not always read as '0'. It depends on the RAM maker and what kind of pattern they used. >> There is afaik some test programs that you can burn onto an eprom >> and run. (I assume that you already know this, though). > > the usual pettester.bin ran for hours without finding RAM errors, but > that's not really a great test, it completely writes one bank (0), > then reads it back. ... and refreshes the RAM while it's doing so. Every RAS-cycle is also a refresh cycle. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2018-02-21 17:01:13
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