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> David F. wrote: > > Sorry, that should have been nIEN==1. > > For a PATA device, the state of the nIEN bit has no effect on > the operation of the drive's firmware or on the timing of > Status register data changes. The only effect the nIEN bit > has is to controller the signal driver for the INTRQ signal. > Argh, sorry again, I was correct the first time -- nIEN==0 .. That's when some devices are sloppy on setting status bits because they assume the host is waiting for the INTRQ. I just wanted to point it because it's still all simply a matter of tightening up the protocol specs.
