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.
56 "ON" INDICATES PROCESSING
C?
I
THE WM POSITION OF A FIELD.
I
1
57 "ON" INDICATES EliMINATION
OF fURTHER A CYCLES.
I
STORE THE RESULT (REG
I
READ OUT THE NEXT CH
I
"*
52 "OFF" INDICATES A FIELD DATA.
OF A FIELD
R) BACK TO B FIELD IN
I
$2=0
52 "ON" INDICATES B FIELD DATA.
MEMORY
__
I
1
I
56=0
I
I
PUT THE NUMERIC
I
PORTION OF A FIELD
,~
A FIE LD IS NOT
I
I
CH IN REG 0
TERMINATED
""' ' ' " ' < $>
56 ON,S7 ON
56 ON, 57 OFF
$6 OFF, 57 ON
56 OFF, 57 OFF
t
I
I
I
RO, Rl
NEVER OCCURS
I I
A FIELD TERMINATED
I
B CYCLE ONLY
I
I
---.J
RO
OFF
I
56=0
I
I
I
I
RO ON
I
I
SP CH WITHOUT WM
I
$P CH WITH WM
I
I~LPHABETIC
& NUMERIC
I
ALPHABETIC
&
NUMERIC
I
CH WITHOUT WM
CH WllHWM
I
57"'
I
I
(FURTHER A CYCLES
56=1
J
I
ELIMINATED BY 57=1)
I
READ OUT THE NEXT
J
I
CH OF B FIELD
56=1
I
I
IFO
I
I
COMPLADD
Z=O IF THE CH WAS A¥
I
I
I
SO
I
56=0
I
STRIP THE NUMERIC 8
L
BlT
9
<$>
TRUE ADD
I
TRUE ADD
I
~
OFF
ON
1
CDMPL
ADD
I
ADD THE CARRY-IN AND
ADD THE CARRY-IN
ADD THE 9'S COMPL OF
THE 9'S COMPL OF THE
AND THE A FIElD (REG
' -
THE NUMERIC PORTION
A FIELD (REG 0 EQUALS
D EQUALS ZERO) TO
I
I
OF A FIELD (REG D) TO
ZERO) TO THE NUMERIC
THE NUMERIC PORTION
I
THE NUMERIC PORTION
PORTION OF B FIELD
OF B FIELD (REG R) AND
B FIE LD SP CH, NOT
A F[ELD SP CH, NOT I
OF B FIELD (REG R).
(REG R)
&
SAVE THE
SAVE THE CARRY- OUT
A¥
A¥
STORE RESULT IN REG
CARRY-Our
J
I
J
AND SAVE THE CARRY-,
l
1
l
I
OUT
B FIELD IS
AIS
A FIELD [S A¥
I
~
j
I
S~.
I
ADD THE CARRY-IN &
[F NUMERIC RESULT
I
CHANGE IT TO A ZERO!
I
CHANGE IT TO A ZERO
I
THE NUMERIC
IS ZERO
PORTIONS OF A FIELD
I
(REG D) & B FIE LD ( REG
I
t
I
R) STORE RESULT IN
I
~-.
I
I
I
I
REG
J
AND SAVE
TH~
:~ THERE WAS A CARRY
RO=I
R~'
THE CARRY-OUT
<$>
I
J
1
I
I
S4=1 IF NUMERIC
RESULT [S ZERO
J
I
S5=1 IF THERE WAS A
I
I
I
+
+
CARRY-IN
COMPL ADD WITH
COMPL ADD WITH NO
TRUE ADD WITH
TRUE ADD WITH NO
t
CARRY-IN
CARRY-IN
CARRY-IN
CARRY-IN
I READ OUT AGAIN THE
I
t
I
I
I
SAME B F[E LD CH
ADD 1 AND THE 9'S
ADD THE 9'S COMPL OF
ADD 1 AND THE NU-
ADD THE NUMERIC
j
COMPL OF THE NUMERIC
THE NUMER[C PORTION
MERIC PORTIONS OF
PORTIONS OF A F[ELD
PORTION OF A FIELD
OF A FIELD (REG D) TO
A F[ELD (REG D) & B
(REG D) & B FIE LD (REG
52 •
(REG D) TO THE NUMERIC
THE NUMERIC PORTION
F[ELD (REG R). STORE
R). STORE RESULT [N
PORTION OF B FIELD
OF B FIELD (REG R)
RESULT IN REG
J &
SAVE
REG J & SAVE THE
,m"
::$>
(REG R). STORE RESULT
STORE RESULT IN REG
J
THE CARRY-OUT
CARRY ... OUT
CH ANALYSIS
IN REG J AND SAVE THE
& SAVE THE CARRY-OUT
1
1
.
RO, R\
CARRY-OUT
!
+
j
RO OFF
RO On
l
S4=1 IF NUMERIC
I
I
RESULT [S ZERO
I
SP CH WITHOUT WM
I
I
SP CHWITH WM
I
I
~LPHABETIC
& NUMERIC I
CH WITHWM
t
J
I ALPHABETIC & NUMERICI
I
!"J
IF THE CH WAS
I
CH WITHOUTWM
t
I
I
PUT. THE NUMERIC
I
•
RESULT (REG
J)
.N
I
PUT THE NUMERIC
REG R
~SULT
(REG J) IN REG
I
SO
H
G
Figure 5-11.
Add Op (Part 3 of 5)
5-17
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