A500 Problems with 512kb expansion

[McBierle]

Hi, it seems my memoryexpansion card is faulty (A502/16). I used MBRTest-2 to test the memory. The first 512kb are fine. But when testing from c00000 on it throws errors. I made two 64cycle runs and once 256 cycles. I shortend the logs to just show the errors with there respective adresses:

--> MSCAN error 1 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 2 at c5f608 (5f608), wrote aaaa, read 5555
--> MSCAN error 3 at c0f70a (f70a), wrote 5555, read 7201
--> MSCAN error 4 at c5f708 (5f708), wrote 5555, read aaaa
--> MSCAN error 5 at c5f708 (5f708), wrote aaaa, read 5555
--> MSCAN error 6 at c0f708 (f708), wrote aaaa, read 5555
--> MSCAN error 7 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 8 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 9 at c4f708 (4f708), wrote 5555, read aaaa
--> MSCAN error 10 at c2f708 (2f708), wrote 5555, read aaaa
--> MSCAN error 11 at c7f708 (7f708), wrote aaaa, read 5555
--> MSCAN error 12 at c6f608 (6f608), wrote aaaa, read 5555
--> MSCAN error 13 at c0f708 (f708), wrote 5555, read aaaa
--> MSCAN error 14 at c5f608 (5f608), wrote aaaa, read 5555
--> MSCAN error 15 at c7f608 (7f608), wrote aaaa, read 5555
--> MSCAN error 16 at c5f708 (5f708), wrote aaaa, read 5555
--> MSCAN error 17 at c5f608 (5f608), wrote aaaa, read 5555
--> MSCAN error 18 at c5f708 (5f708), wrote 5555, read aaaa
--> MSCAN error 19 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 20 at c0f708 (f708), wrote 5555, read aaaa
--> MSCAN error 21 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 22 at c0f608 (f608), wrote 5555, read 004c
--> MSCAN error 23 at c4f408 (4f408), wrote 5555, read aaa8
--> MSCAN error 24 at c0f708 (f708), wrote aaaa, read 5555
--> MSCAN error 25 at c1f608 (1f608), wrote 5555, read aaaa
--> MSCAN error 26 at c6f708 (6f708), wrote 5555, read aaaa

Error counts: MSCAN: 26
Testing done in 00:04:51

--> MSCAN error 1 at c4f60a (4f60a), wrote aaaa, read 5957
--> MSCAN error 2 at c4f608 (4f608), wrote aaaa, read 5555
--> MSCAN error 3 at c4f708 (4f708), wrote 5555, read aaaa
--> MSCAN error 4 at c2f608 (2f608), wrote aaaa, read 5555
--> MSCAN error 5 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 6 at c4f60a (4f60a), wrote 5555, read aaa8
--> MSCAN error 7 at c0f708 (f708), wrote aaaa, read 5555
--> MSCAN error 8 at c4f708 (4f708), wrote 5555, read a6a8
--> MSCAN error 9 at c4f608 (4f608), wrote aaaa, read 5555
--> MSCAN error 10 at c1f608 (1f608), wrote 5555, read 6174
--> MSCAN error 11 at c4f708 (4f708), wrote 5555, read aaaa
--> MSCAN error 12 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 13 at c2f608 (2f608), wrote 5555, read aaaa
--> MSCAN error 14 at c5f608 (5f608), wrote 5555, read aaaa
--> MSCAN error 15 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 16 at c0f708 (f708), wrote aaaa, read 5555
--> MSCAN error 17 at c0f708 (f708), wrote 5555, read aaaa
--> MSCAN error 18 at c0f708 (f708), wrote 5555, read aaaa
--> MSCAN error 19 at c7f608 (7f608), wrote aaaa, read 5555
--> MSCAN error 20 at c6f608 (6f608), wrote aaaa, read 5555
--> MSCAN error 21 at c2f608 (2f608), wrote aaaa, read 5555
--> MSCAN error 22 at c5f708 (5f708), wrote aaaa, read 5555
--> MSCAN error 23 at c2f608 (2f608), wrote aaaa, read 5555
--> MSCAN error 24 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 25 at c5f708 (5f708), wrote 5555, read aaaa

Error counts: MSCAN: 25
Testing done in 00:04:53

--> MSCAN error 1 at c1f708 (1f708), wrote aaaa, read 5555
--> MSCAN error 2 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 3 at c6f608 (6f608), wrote 5555, read aaaa
--> MSCAN error 4 at c4f608 (4f608), wrote aaaa, read 5555
--> MSCAN error 5 at c2f708 (2f708), wrote 5555, read aaaa
--> MSCAN error 6 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 7 at c2f608 (2f608), wrote aaaa, read 5555
--> MSCAN error 8 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 9 at c0f608 (f608), wrote 5555, read 4d6f
--> MSCAN error 10 at c2f608 (2f608), wrote aaaa, read 5555
--> MSCAN error 11 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 12 at c2f608 (2f608), wrote aaaa, read 5555
--> MSCAN error 13 at c2f708 (2f708), wrote 5555, read aaaa
--> MSCAN error 14 at c1f60a (1f60a), wrote 5555, read aaaa
--> MSCAN error 15 at c4f608 (4f608), wrote aaaa, read 5555
--> MSCAN error 16 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 17 at c6f608 (6f608), wrote 5555, read aaaa
--> MSCAN error 18 at c3f708 (3f708), wrote aaaa, read 5555
--> MSCAN error 19 at c4f60a (4f60a), wrote 5555, read aaaa
--> MSCAN error 20 at c3f708 (3f708), wrote aaaa, read 5555
--> MSCAN error 21 at c4f60a (4f60a), wrote aaaa, read 5555
--> MSCAN error 22 at c1f608 (1f608), wrote 5555, read aaaa
--> MSCAN error 23 at c2f708 (2f708), wrote aaaa, read 5555
--> MSCAN error 24 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 25 at c4f608 (4f608), wrote aaaa, read 5555
--> MSCAN error 26 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 27 at c5f608 (5f608), wrote 5555, read aaaa
--> MSCAN error 28 at c5f708 (5f708), wrote aaaa, read 5555
--> MSCAN error 29 at c6f608 (6f608), wrote aaaa, read 5555
--> MSCAN error 30 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 31 at c7f708 (7f708), wrote 5555, read 0000
--> MSCAN error 32 at c2f708 (2f708), wrote 5555, read aaaa
--> MSCAN error 33 at c4f708 (4f708), wrote 5555, read aaaa
--> MSCAN error 34 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 35 at c5f60a (5f60a), wrote 5555, read aaaa
--> MSCAN error 36 at c5f708 (5f708), wrote aaaa, read 5555
--> MSCAN error 37 at c1f608 (1f608), wrote aaaa, read 5555
--> MSCAN error 38 at c4f608 (4f608), wrote 5555, read aaaa
--> MSCAN error 39 at c7f708 (7f708), wrote 5555, read 0000
--> MSCAN error 40 at c1f608 (1f608), wrote 5555, read aaaa
--> MSCAN error 41 at c5f608 (5f608), wrote 5555, read aaaa
--> MSCAN error 42 at c1f608 (1f608), wrote aaaa, read 5555
--> MSCAN error 43 at c4f708 (4f708), wrote 5555, read aaaa
--> MSCAN error 44 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 45 at c5f60a (5f60a), wrote 5555, read aaaa
--> MSCAN error 46 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 47 at c4f608 (4f608), wrote aaaa, read 5555
--> MSCAN error 48 at c0f608 (f608), wrote aaaa, read 5555
--> MSCAN error 49 at c1f708 (1f708), wrote 5555, read 3030
--> MSCAN error 50 at c5f608 (5f608), wrote aaaa, read 5555
--> MSCAN error 51 at c6f708 (6f708), wrote 5555, read aaaa
--> MSCAN error 52 at c3f708 (3f708), wrote 5555, read aaaa

Error counts: MSCAN: 52
Testing done in 00:19:18

Are those ICs defective or could it be something else, like those capacitors?


Greetings!

[McBierle]

Hello everyone, new things happened. As this Amiga is Rev.8 i added 512k memory on the motherboard, added U32 and changed JP2,3 and 7A. Works like a charm with 1mb chipmem. For fun i added the A502 and got 1,5mb chipmem which also works without memory errors. I tested memory with 3 different tools, no errors. Soooooo why? Any ideas?