Subject: Re: problem: need tech specs of magnum 4000SC
To: Noriyuki Soda <soda@sra.co.jp>
From: Mark Abene <phiber@radicalmedia.com>
List: port-arc
Date: 10/16/2000 19:13:18
On Tue, Oct 17, 2000 at 02:25:47AM +0900, Noriyuki Soda wrote:
> Sorry for late response.
> 
> >>>>> On Tue, 10 Oct 2000 11:41:23 +0900 (JST),
> 	Noriyuki Soda <soda@sra.co.jp> said:
> 
> > I cannot access the technical specs at least until this weekend,
> > since I'm in the middle of a business trip now.
> > Also, I have vague memory that the specs only describes the behaviour
> > of the currently coded case of the R4030_SYS_IT_STAT.
> 
> The memory is correct.
> ARC chip R4030 (and it's second source NEC uPD31432) manual describes
> that the address of interval timer status register is 0x80000230.
> 
> If ARC chipset generation of your machine is newer than original
> Magnum, interval timer status register address may be 0x800001a8
> (see pica/rd94.h), but your machine seems to be not so newer, mmmm.
> --
> soda
> 

Is there any way I can tell if I'm reading the correct register based on the
contents?  Is this supposed to be a bitmapped register of flags?  Should I
expect to see a certain value if I printf the contents?  What about IT_VALUE?

Thanks,
-Mark