[OpenBIOS] fdthree

[Artyom Tarasenko]

Since none of the current Linux/sparc64 distributions has virtio
drivers out of the box, it were nice to give the user ability to load
them from a removable media.
Currently Linux doesn't recognize our fdthree drive. The reason is
simple - in OpenBIOS

0 > cd /pci/ebus/fdthree  ok
0 > .properties
name                      "fdthree"
reg                       00000000 00000000 00000000

in ultra5's prtconf this property looks like this:

reg:  00000014.003023f0.00000008.00000014.00706000.00000010.00000014.00720000.00000004

The meaning of the first triple is clear - these are the fdc control
registers. But what are the two other register sets?

It looks like qemu has a normal PC floppy, connected to EBus. Probably
it's not what Sun used to call fdthree?
If fdthree is really something else, were there any UltraSPARC
machines with PC floppy drives?

-- 
Regards,
Artyom Tarasenko

solaris/sparc under qemu blog: http://tyom.blogspot.com/search/label/qemu