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PROGRAMMING
Selects the mode of operat1on.
RUN:
used to perform calculatJons
.
address the program
counter and execute a program.
PROGRAM:
used to enter a program from the keyboard
and venfy a program
.
Causes an uncondit10nal branch to the program address
entered by the next two keystrokes or by the next two
pro·
gram steps. Each program step can be only one
keystroke.
CORRECT
INCORRECT
STEP
KEY
STEP
KEY
29
2a
2b
GO TO ( )
( )
5
c
29
GO TO
(
)
( l
2a
5
C
2b
Starts program execut1on at the present
address.
lf the
program has halted execut1on at a STOP mstruct1on.
press-
ing CONTINUE will start program execut1on w1th the next
program
step.
lf
the
program has halted execut1on at an
END mstruct1on, pressmg CONTINUE w1ll start program
execut1on at program step 00. CONTINUE can al so be
used as a 'no operat1on' program
step.
See the program
for
N!,
page 26.
Halts
program execut1on and causes a return to the diS·
play mode. The STOP 1nstruct1on prov1des an uncondJ
·
tional
halt of program execut1on for entry of data or d1s
play of results.
Pressmg
CONTINUE begms program
execut1on w1th
the
next program step.
Pressmg STOP
during execution of a program will cause
the
program to
stop execution at
the
present program step and will cause
a return
to
the display mode. Pressmg CONTINUE will
begin program execution
with the
next program step.
Use
the
STOP instruction to enter data
.
W1th the program
at a STOP or END mstruct1on any keyboard operat1on can
be manually executed, prov1ded that no data 1s stored
tn
a reg1ster contammg program
steps.
Stonng data
tn
a
reg1ster contammg program steps will destroy the program
steps m
that
reg1ster
Halts
program execut1on and causes a return
to
the
display
mode.
The instruct1on
resets
the program counter
to 00
so
that
pressing CONTINUE begins program
execu-
tion
at step
00.
END
must
be
the last
mstruct1on m a program
.
Reading
the END mstruct1on
from the magnet1c card stops
tlle
reading
process and
resets the
program counter
to
00.
19
~
PROGRAM
. ~
~·
-
-~ -~
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