The Design Example provided with the core will work as is, but it might not work if you modify the ireq_generator.v file to add other traffic such as a maintenance packet. The ireq_generator.v file supplied with the user example design will potentially encode the ireq_byte_en_n bus with unsupported RapidIO partial DWORD formats.
This issue is fixed in v4.2 of Serial RapidIO Core. Please upgrade to the v4.2 Core.
If you need a work-around for this issue as soon as possible, open a WebCase and mention this Answer Record to the Technical Support Engineer. You can open a WebCase at: