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hi all,

I have a simple doubt on ATA/ATAPI. As per ATA spec before writing commands,
there must be BSY=0 and DRDY=1. I have one doubt on this.

1) If BSY=0 is there a possibility of DRDY=0, if yes, under which condition?
2) if BSY=1 is there a possibility of DRDY=1, if yes under which condition ?

Also  there a "Device Fault" in status register. what does it means. Is the
device is Physically Faulty, or just for the command.

thanks
Shibu




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