[OpenBIOS] Faulty Qemu SPARC64 IDE emulation?

[Tarl Neustaedter]

[...]
> QEMU is emulating a Sabre/Simba based system.
>   

I'll keep that in mind - I never actually worked on one of those systems.

> There the values are (from the US-IIi manual)
> Config: 000001fe.01000000, length 00800000?
> IO: 000001fe.02000000 length 00100000
> mem32: 000001ff.00000000 length f0000000 (4G - PROM)
> mem64: 000001ff.80000000 length f0000000 (I think)
>   

The ranges property you showed below comes out with:

00000000.00000000.00000000.000001fe.01000000.00000000.01000000.
01000000.00000000.00000000.000001fe.02000000.00000000.01000000.
02000000.00000000.00000000.000001ff.00000000.00000001.00000000.
03000000.00000000.00000000.000001ff.00000000.00000001.00000000


Config space is twice the size of Psycho's, at 01000000 - so supports 
256 buses instead of the 128 psycho did (defect in that chip). IO space 
supports a full 24-bit address as well (length 01000000). And the memory 
spaces support the full 32 bits (length 1.00000000), although in 
practice you have to reserve some address space for DMA.