I believed so too, but Lei-Chun patch changed it to ATA133.
Lei-Chun, could you tell us what we can expect from 745 chips ?
> 2) the 646 (and most likely the 645 and others as well) may be paired
> with a 961 (ATA/100) or 961B (ATA133) MutIOL southbridge with different
> register programming values.
> Thus simply ripping out some northbridge IDs wouldn't prevent
> corruption problems.
I don't see why (unless you refer to the 962/963 problem I did mention).
If we remove the IDs, the chips will be detected as SiS5513 (ATA_16). If
I'm correct, in this mode (only allowing PIO modes and SW/MW DMA modes)
all chips are OK.
I didn't dig in all specs to check each config register change, but all I
saw was OK and I *never* received any data corruption report for a chip that
was configured as original SiS5513 (though I have many reports of bad
performance due to PIO modes being used in such cases).
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