Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Mon, 7 Jan 2002 16:02:20 -0700

I suspect that the VXI backplane will not probe until the nivxi
library's initialization has been run.

I agree that, on certain processors and motherboards, that it's a good
idea to avoid the low logical address ranges depending on how VXI
interrupts are dispatched.

Jeff

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> Sent: Monday, January 07, 2002 3:57 PM
> To: Jeff Hill
> Cc: 'John Faucett'; EPICS-tech-talk
> Subject: Re: VXI driver support
> 
> Could there be a problem with using logical address 1?  ISTR that LA's
map
> directly to interrupt vector numbers, and most processors tend to
reserve
> the lower numbered interrupt vectors for other things (I don't know
what
> CPU is used in an hkbaja60 though).  Try switching to a logical
address
> above 0x40
> 
> I'm not sure whether that would explain these symptoms or not though,
it
> might just mean that you couldn't connect an interrupt routine to that
> card, or it may be that it's only the MXI modules that have that
> restriction.
> 
> - Andrew
> --
> Perfection is reached, not when there is no longer anything to add,
> but when there is no longer anything to take away.
> - Antoine de Saint-Exupery

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System