74 | Page
12;
INT (I) => I , I => HLT, PRT I
continued
answer.
Note the use of the
comma to delineate
commands on the same
line.
When the
is pressed
after the HLT command
in this line to continue
execution, the result is
printed and the program
executes the track
computation of the Great
13;
ACS ((SIN C – SIN A * COS (I / 60)) /
(SIN (I / 60) * COS A)) => J
the Great Circle routine
which is stored in
14;
IF SIN (D-A) ≥ 0 , GTO “360”
conditional ≥ to
determine if the initial
true track is to the west
or the east.
The direction is
determined by the
positive or negative
value of the SIN (see
formula). If positive GTO
(do not return) a routine
labelled 360. If negative
continue to the next line.
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