[temp t13] Re: Are devices allowed to go busy on their own?

[Jim Castleberry]

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On Thu, Jul 12, 2001 at 05:05:25PM -0700, Mcgrath, Jim wrote:
> BSY would have been the wrong response in that case in any event - BSY is
> used as an interlock on accessing the task file registers, not actual
> command execution.  i.e. when you are spinning up (which we all do today)
> you cannot execute a lot of commands, but you don't use BSY as the interlock
> for that - you use DRDY.  Indeed, the DRDY bit would be a much better choice
> for something like thermal calibration.

Except that per 7.15, ATAPI devices shall not set DRDY after
a reset until the first command is issued.

jcastle

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