RE: Read MASKNUM from C?

For Diab and Codewarrior, you can use:

asm UINT32 Read638(void)
{
	mfspr r3,638
}	


Regards,
Allan

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of Farkas, Les
Sent: Tuesday, January 31, 2006 10:47 AM
To: [email protected]
Subject: RE: [MPC500] Read MASKNUM from C?


This works under Green Hills.  There is a similar Syntax for Diab.

#pragma inline read_638
__asm U32
read_638(void)
{
%
 mfspr r3,638
}

-Leslie

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Cooper, Jim
> Sent: Tuesday, January 31, 2006 11:35 AM
> To: [email protected]
> Subject: [MPC500] Read MASKNUM from C?
> 
> 
> Hi All
> 
> Can anyone help me with some code that will let me determine
> the MASKNUM of a MPC555 from inside a C program?
> 
> Presently I am determining the MASKNUM either from reading
> the labeling on the part or looking at IMMR (SPR638) during 
> debug.  Both of these require manual intervention.
> 
> I would like to automate checking MASKNUM as part of our
> board test and verify that it is an acceptable version, and 
> if it is not, give an error message to the tester.
> 
> I think I am looking for is some assembly code that can be
> embedded in-line in my C program that will return the IMMR to C.
> 
> Our present boards have had problems with versions before K2
> and the new M version.  We are trying to use only K2 or K3 versions.
> 
> 73
> Jim Cooper
> ASYMTEK
> [email protected]
> 
> 
> -----------------------------------------------------------
> To learn more about Freescale Microcontrollers, please visit
> http://www.freescale.com/mcu
> 
> 
>  
> Yahoo! Groups Links
> 
>     http://groups.yahoo.com/group/MPC500/
> 
> 
>  
> 
> 
> 


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