HP HP-67 - Page 279

Card Reader Operations 275
To merge a program from a magnetic card into program memory:
1. Set the W/PRGM-RUN switch weram [T Run to RUN.
2. Use the ()] (M (M) () operation from the keyboard to
set the calculator to the last step of the loaded program that you
want to save.
3. Press ) (merge).
4. Pass one side of the magnetic card containing the new program
through the card reader. If the second side of the card must
also be loaded, the calculator display will prompt you with
Crd
5. If the calculator display shows , pass the second
side of the card through the card reader. The calculator will
again display the original contents of the X-register to indicate
that the merged load has been completed.
When you merge a program from a card into program memory, the
instructions from the card are loaded into the calculator beginning
with the step of program memory following the step to which the
calculator is set. Thus, if you first set the calculator to step 118
using the operation () 118 from the keyboard, the first
instruction from the magnetic card would be loaded into step 119,
the second instruction into step 120, etc. All instructions in program
memory after the merge step are replaced by instructions from the
magnetic card.
Remember, in some cases even one side of a program card may
contain 224 steps (although the last 112 steps are compressed
1nstructions).