WP-34S: Safely copy a graphics register's contents

[Paul Dale]

(06-11-2014 08:54 PM)walter b Wrote:  just STO and RCL as you please.

This is not reliable in DECM. Real numbers are normalised on store, this could change the graphic.

I think it will work in integer mode as the code currently stands but I wouldn't rely on it -- a mask and truncate to the current word size is a perfectly acceptable thing for the calculator to do on either STO or RCL.

Using one of the register swap commands twice will work too:

Code:

x<>
y<>
z<>
t<>

This won't preserve the source but is more likely to run into the future.

The most reliable way will be to use the block register copy command (R-COPY). That is what it is there for. Thus, something like:

Code:

# 001
SDR 002
# 001
SDR 005
+
R-COPY

- Pauli