Fernando Pedro Birra wrote:
> Is there any place where I can read how the player talks to the disk?
>
>
The schematics and the source code.

> Following the code that generates the error ATA -11 I can see that
> neither STATUS_RDY nor the STATUS_BSY were reported during the
> master_slave_detect() function. Is there any hardware between the CPU
> and the disc that handle the ATA protocol?

Only a buffer, controlled by a port pin, PA7.

> Am I mistaken that the ATA status is memory mapped into location
> ATA_IOBASE+0x07? I can't find any information on the CPU .pdf
> regarding this location...

The schematics say it all, but it isn't exactly obvious. Yes, you are
correct, it's memory mapped.

Linus
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Received on Wed Apr 6 06:59:23 2005