HP 82104A Owner's Handbook Manual page 14

12 Card Reader Operations
3. Set the HP-41C to the program you wish to write onto the card.
(Press @9 ] name (ALpHAJ , supplying the name of
the desired program.)
4. Hold the card face up and
firmly insert track 1 of the card
as shown.
a. If the program is longer
than 16 registers (each
track on a card holds a
maximum of 16 registers),
the HP-41C prompts you
for the next track with
RDY kk OF nn
where kk is the number of
the next track to be written
and nn is the total number
of tracks required to write
the entire program to cards.
(Notice that when you be-
gin writing a program to
cards, the HP-41C knows
the total number of tracks
required for that program.)
Simply turn the card over
and insert track 2 into the
card reader as shown.
Pressing (R/S], (=), or turning the HP-41C off at this point
will terminate the operation. Pressing any other keys will only
cause the display to blink and the pressed function will not be
executed. TheRDY kk OF nnand CARD prompts will remain
active for 10 minutes, at which time the operation is termi-
nated.
5. The entire program, including current key assignments oflabels in
that program, is now written on the magnetic card and also
remains loaded in the program memory of the calculator. The
contents of all data storage registers, the stack, and ALPHA
registers are unchanged.