Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Mon, 8 Nov 2010 11:07:34 -0500

Hi,

On Monday 08 November 2010 03:44:54 çæ wrote:
> My confusion is that, in document "VxWorks5.5 for PowerPC
> Architecture Supplement",it shows as follows, which says PowerPC 750GX does
> not belong to PPC604.

I suspect that document may have been created before the 750GX was released; 
it doesn't say that the 750GX CPU does not belong to the PPC604 family, it 
doesn't list it at all which is not quite the same thing.

> While in document "vxworks architecture supplement 6.7", it shows as
> follows, which says PowerPC 750GX belongs to PPC604.

Since the second document does explicitly say that the 750GX does belong to 
the PPC604 family I would believe that.  The PPC604 classification indicates 
the instruction set that the CPU executes, and it can't change with different 
operating system versions.

> So, I am not sure if PPC604 in vxWorks5.5 includes PowerPC 750GX. Isn't the
> "PPC604" in vxWorks5.5 and vxWorks6.7 the same? In my EPICS environment,
> can I choose CPCI6190 board?

The fact that the 750GX is a PPC604 doesn't mean that it will _definitely_ 
work with vxWorks 5.5, but I suspect it probably will.  There are various 
reasons that it might not relating to things like any additional registers it 
may have that have to be configured, and vxWorks might check the processor ID 
register.

I don't know anything about the CPCI6190, but you should ask the board vendor 
whether they can provide a vxWorks 5.5 BSP for it.  If they do then that 
answers your question and I could see no reason why you wouldn't be able to 
run EPICS on it.

- Andrew
-- 
If a man is offered a fact which goes against his instincts, he will
scrutinize it closely, and unless the evidence is overwhelming, he will
refuse to believe it.  If, on the other hand, he is offered something
which affords a reason for acting in accordance to his instincts, he
will accept it even on the slightest evidence.  -- Bertrand Russell

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System