HP41CL newbie question

[Ángel Martin]

So the replacement is ready - it uses register 9(Q) instead of 4(L). All "standard" CPU registers (A,B,M,N) are used when the SECURE code is executed if the flag is set for it.

The reason I haven't released it yet is that I *remember* trying this in the past and rejecting it for another reason... but i can't recall what was that exactly. If I can't see any problem in the next coupe of days I'll post the new ROM images.