HP-41 Cataiog Enhancement Conflict OS/X vs HP-IL DEV+

[BitWiz]

I am having a conflict in the enhanced CAT command in the AMC OS/X ROM and the HP-IL DEV+ ROM.

In my NoV-64D I have the HP-IL DEV+ ROM on Pages A and B and the OS/X ROM on Page C.

In this setup when I try to use the CAT function on the 41 I get the CAT enhancements from the HP-IL DEV+ ROM (pressing power brings up a 3 underscore prompt) rather than the CAT" enhancements from the OS/X ROM.
CAT"
I cleared out HP-41 page A and I got the CAT" back.

Is there anyway to have these two ROMs co-exist and choose which CAT enhancements I get? Do I have to have the OS/X ROM in a lower HP-41 page than the HP-IL DEV+ ROM to get the CAT" prompt?

Also, where can I find the manual for the HP-IL DEV+ ROM?

Thanks every one and double thanks top Angel for all of his amazing ROMs.