In RPN mode,
2
4
6
246
Branching (GTO)
As we have seen with subroutines, it is often desirable to transfer execution to a part
of the program other than the next line. This is called branching.
Unconditional branching uses the GTO (go to) instruction to branch to a specific
program line (label and line number).
14-4
Programming Techniques
1
3
5
135
Starts subroutine here.
Enters A.
Enters B.
Enters C.
Enters D.
Recalls the data.
2
A
.
2
2
A
+ B
.
2
2
2
A
+ B
+ C
2
2
2
A
+ B
+ C
+ D
2
2
2
A
B
C
D
Returns to main routine.
Nested subroutine
2
Adds x
.
Returns to subroutine S.
2
2