<html><body><p><tt><font size="2">> > ^ this --p8 worries me; I assume you're still talking about p9 but this<br>> > tool was made in the p8 era and they both use the same ecc algos?<br>> <br>> Correct. There's another ECC algorithm in there, and I *think* it's<br>> what's used on flash for the IBM FSP, but I'm not sure. The repository<br>> where the 'ecc' binary comes from was thrown over the wall 5.5years ago<br>> or so and was unmaintained until I gained god-mode on the open-power org<br>> and merged my patches from years prior :)<br></font></tt><br><tt><font size="2">I should have commented on that -- the "--p8" is okay, the ECC algorithm</font></tt><br><tt><font size="2">between P9 and P8 is identical. However if you don't specify the flag it</font></tt><br><tt><font size="2">will default to the "NOR" mode of the ECC. </font></tt><br><br><tt><font size="2">In fairness, the flag is badly named and was never fixed. It is really</font></tt><br><tt><font size="2">just flipping the polarity of the ECC algorithm. The --p8 mode means that</font></tt><br><tt><font size="2">a good ECC on all 0s is 0xFF, where as the default without means that a </font></tt><br><tt><font size="2">good ECC of 0s is 0x00.</font></tt><br><br><tt><font size="2">While the SBE HW is fixed with good ECC of 0s as 0xFF -- the PNOR really</font></tt><br><tt><font size="2">should migrate over to 0x00s (it is still 0xFF because P8 required it)</font></tt><br><br><br><font size="2">Dean Sanner<br>Dept. DIH, IBM Rochester, MN<br>(507) 253-7523 t/l 553-7523<br>dsanner@us.ibm.com<br></font><br><BR>
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