[parisc-linux] 720 - some progress

[Jurij Smakov]

> The CPU in the 720 will treat this as a priviledged instruction. The
> changes "signal 18 -> signal 26, signal 27, signal 28" and "allow read
> access to CR26 and CR27 for non-priviledged access" are documented as new
> for the PA7100LC processor, so they are not available in the 720.
> 
> Another thing to emulate on the old 720/50 platform...
> 
> Cheers,
> Jochen

It does not seem so complicated... Even with my rudimentary C programming
skills :-). I'll try to put something together. Is there a way to check
if we are running on a 720?

Jurij.