2014-04-06 22:33 GMT+02:00 Michael Schmitz <schmitzmic@xxxxxxxxx>:
Hello Dave, Tuomas,
Also, looking at the timeout formulae in the old NCR53C9x.c driver,
the values would be different for FAS216. Why was this dropped from
the modern esp_scsi?
I've never seen a formula for any ESP or FAS chip for the timeout
other than the one mentioned in huge comment in
esp_set_clock_params(), although I do see the 7668 instead of 8192
factor being used in the old NCR53C9x driver.
I haven't gone far enough back in the 53C9x revision history to be
certain. but it would seem to me that Kars de Jong added that FAS
special case.
Can you confirm that, Kars? Any recollection as to the reason?
That is the value that's in the data manual of the Symbios Logic
SYM53CF94/96-2 (the actual chip that's in my Amiga SCSI controller).
Funny, according to the QLogic FAS2x6 manual the value should be 7682
for FAS216/216U/236/236U chips...
I don't think it's all that important. It only means that the actual
selection timeout used by the chip will be slightly shorter than it is
supposed to be.
Kind regards,
Kars.
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