Re: [Qemu-devel] What is this?

[John R. Hogerhuis]

On Wed, 2005-04-13 at 16:14 +0100, Natalia Portillo wrote:
> Hi!
> 
> What are commands 0x10 and 0x14 of the IDE controller?
> 


Not an authoritative source, but probably right. So this would imply
that both commands are "recalibrate." The lower nibble is D/C.

http://www.pjrc.com/tech/8051/ide/wesley.html#idecommands

1XH             recalibrate the disk. NB: 1XH means that the lower
                nibble of the command byte is a don't care. All
                commands 10H..1FH will result in a recalibrate
                disk command being executed. This command has no
                parameters. You simply write the command code to
                the command register and wait for ready status to
                become active again.