Two VxWorks IOCs in one VME Crate

[<keith.baker@diamond.ac.uk>]

Hello,

We want to run two MVME5500 processor boards in one VME crate where both processors run EPICS IOCs under VxWorks (v5.5) and receive interrupts from other I/O cards on the VME bus? (A mix of Hytec cards and Power Supply Controllers.)

 

We have cases of two processor boards in a one crate, but they are not both receiving interrupts from I/O modules in other slots.

 

My boards do not need to receive data from the same I/O modules. I’ve assigned interrupt vectors so they are unique to each IP module and processor, but both IOCs throw up errors for receiving uninitialised interrupt vectors. They seem to receive interrupts on vectors not configured for them, or rather not from the modules they are interested in.

 

There are 7 VME interrupt levels (on 7 VME bus lines) and I found some suggestion that the two processors must not both handle the same interrupt level, but it looks like our drivers do not give us freedom to configure this.

 

Can anyone clarify this or offer a solution?

Thanks,

Keith Baker

Controls Group

Diamond Light Source Ltd.

 

 

-- 

This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail.
Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd.
Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message.
Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom