HP-48GX ROM P

[Giuseppe Donnini]

No mystery here:

The VERSION command returns the following two string objects to stack levels 2 and 1, respectively:

2: "Version HP48-X"
1: "Copyright HP 1993"

where X represents the actual ROM revision number.

Now, you only have to inadvertently hit the [+] key and both strings end up being concatenated, which looks like this:

1: "Version HP48-XCop…

(In the case of string objects, the system decompiler responsible for stack objects does not add line feeds even if you are in multi-line mode, which is the default setting (system flag -52 clear). So the result will always be one single line, if necessary truncated to 19 characters, including the opening double-quote delimiter and the closing ellipsis.)