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On Mon, 21 May 2001 16:48:59 +0530, SHIBU BABY wrote:
>Suppose, I have one device connected as "Primary Master" and when I set the
>DEV bit in device head register to 0 and issuing commands there is no
>problem. But when I set the DEV bit to 1,and checking for the Device Ready,
>sometimes I am getting device not ready but most of the times I am getting
>"Device ready".( I mean when I write a command to a device which is not
>present I am getting the command completed information.). What happens if I
>select a device which is not present.
The "correct" operation of devices in this case can be found in the
IOR-/IOW- tables in clause 7 and in clause 9.16 of ATA/ATAPI-5 (or
-6). But there are lots of devices, especially ATAPI devices, that
are implemented incorrectly.
*** Hale Landis *** [EMAIL PROTECTED] ***
*** Niwot, CO USA *** www.ata-atapi.com ***
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