[34S] Proposal for Entry RPN mode with dynamic stack

[Thomas Klemm]

(02-19-2015 03:08 PM)Didier Lachieze Wrote:  Is 2 just replacing 3 which stay hidden in the X register until I press ENTER or an operator key while 4 is still displayed on the top line?

No, 3 is displayed in the top line. It's pretty much how the HP-42s handles it:

y: 3.0000
x: 2_

They differ however when this entry is deleted with the [←] key.
The HP-42s will display 0 in x:

y: 3.0000
x: 0.0000

However the stack-lift is disabled. Thus 0 will be overwritten when new digits are entered.

Meanwhile the WP-34s will just return to the initial state and display 4 and 3. In this case the whole stack is unaltered which means that register t isn't lost. This is in contrast to the HP-42s.

Cheers
Thomas