HP-41C T register duplication disabling

[Ranieri]

(02-20-2020 04:53 PM)David Hayden Wrote:  It's an interesting question. Suppose it was possible to disable T register duplication. What would you put in the T register instead?

In other words, suppose you key in
1 ENTER
2 ENTER
3 ENTER
4 +

What would you want the stack to contain?
T: ?
Z: 1
Y: 2
X: 7

Dave

Thank you for your reply, probably I would expect it to contain 0 just like the other registers.
Ranieri