HP HP-67 - Page 307

Interchangeable Software 303
Since the purpose of the two operations is essentially the same (review
of the stack contents), these two operations are interchangeable
between the two models of calculators. If you load a program con-
taining a € instruction into an HP-67 Programmable Pocket
Calculator, then record that program onto a magnetic card and use the
card to load the same program into an HP-97 Programmable Printing
Calculator, the 3 instruction from the HP-67 will automatically
be loaded into the HP-97 as an ] PRINT: instruction.
Similiarly, the function on the HP-97 and the 5-second (=)
pause on the HP-67 have the same purpose—to allow you to record
the current contents of the X-register while a program is running.
Thus, a instruction in a program recorded onto a magnetic
card by an HP-97 printing calculator will be loaded into an HP-67
as an pause when the card is passed through the card reader on
the HP-67. In the HP-67, this 5-second pause is designed to
give you enough time to write down or view the contents of the
X-register while a program is running.
Note: Within the HP-67 only, the five default functions
above the top-row keys are
present in the calculator to enhance its usability in RUN
mode and cannot be recorded in program memory. How-
ever, these same functions are duplicated elsewhere on
the calculator by prefixed functions, and these prefixed
operations can be recorded.