HP-29C Neutral Operations

[rprosperi]

On a real 29C, the result is the same as your emulator:

(X=4, Y=1, Z=1, T=0)

Indeed, all the other Neutral operations I tried also do the same thing.

Re-reading that section, just for sanity, indeed suggests the outcome you noted, so not sure what's happening here?!?

My 29C has had a 'brain transplant', now sporting an ACT from an HP-21, but I've found it acts perfectly standard in every other way, so while not really suspecting my machine, I do note it for transparency.