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~I
+33
-33
•34
-J4
• JS
• J8
-JS
+39
•40
-40
+41
-41
·-4J
+44
-44
•4'.>
-4.5
·46
-46
+47
-47
•48
-48
•·49
-49
•50
-50
+51
+53
-53
+54
+55
Abbreviation
ZA3
ZS3
A3
SJ
CJ
AS3
SS3
AAS3
BL
BH
BFV
SMFV
HMFV
BE
BCX
BXN
BXM
XL
XU
XZA
xzs
XA
ZS
XSN
XLIN
BIX
BDX
SR'
SRI#
SL'
SLC'
SR
SRR
SL
SLC
SRS
SLS
SRS
SLS
M
D
PC
Nome
Zero Accumulator 3 and Add
Zero Accumulator 3 and Subtract
Add to Accumulator 3
Subtract from Accumulator 3
Compote Accumulator 3 to Storage
Add
to
Storage from Accumulator 3
Subtract Accumulator 3 from Storage
Add
to
Ab5olute Storage from Accumulator
J
Branch
if
Low
Branch
if
High
Field Overflow Control
Branch if Equal
Branch Compared Index Word
Branch if Index Word Indexing Portion
is
Non-Zero
Brooch if Index Word is Minus
Index Word load
Index Word Unload
Index Word Zero and Add to Indexing
Portion
Index Word Zero and Subtract from
Indexing Portion
Index Word Add to Indexing Portion
Index Word Subhact from Indexing
Portion
Index Word Set Non-indexing
Index Word load with Interchange
Branch Incremented Index Word
Branch Decremented Index Word
Shift Control
Coupled Shift Control
Branch on Alteration Switch or Channel
Busy
Multiply
Divide
Inquiry Control
Priority Control
Digit 4 - Digit 5
Field definition
Field definition
Field definition
Field definition
Field definition
Field definition
Field definition
Field definition
Not u!>ed
Not used
Not used
Operation:
0. Test
I. Sense
2.
Stop
Not used
Operand index word
Operand index word
Operand index word
Operand index word
Operand index word
Operand index word
Operand index ward
Operand index word
Operand index word
Operand index word
Operand index word
Operand index word
Operand index word
Index word for shift and count
Index word
for
shift
Operation:
Switch
1-4
Sync or Chan
1-4
0,
Alteration switch
l.
Sync busy
2,
Channel busy
Field definition of multiplier
Field definition of divisor
Unemulated operation
4:
Not used
5:
Made register
0
or I
FIGURE 111. EMULATED 7070/74 OPERATION CODES (PART 2 OF 4)
Digits 6, 7, 8, 9
Address of data
Address of data
Address of data
Addrei.s of dote
Address of data
Address
of
data
Address of data
Address of data
Branch oddre!>s
Branch address
Branch address in
operation
O;
not used
for
operations 1-2
operations 1M2
Branch address
Branch address
Branch address
Bronc h address
Address of
dofa
Address of
data
Four-digit factor
Four-digit factor
Four-digit factor
Four-digit factor
Four-digit factor
Addre» of data
Branch address
Bronc h address
Acc.
Opn.
length
(I-JI
of shift
(00-10)
Digit
Opn.
length
position
of shift
for
split;
(00-201
0
for
normal
Branch address
Address C1f multiplier
Address of divisor
Address of priority m<11k
Comments
Sets high, low, or equal indicator .
Tests
the
low indicoto1
Tests the high indicator.
Test operation
t"!Sts
field overflow
indicator.
Tests the equal indicator
Sign and the other six digit positions
are ignored.
Contents are ignored.
Sign is set to plus and the other six
digits are unchanged.
Sign is set to minus and the other six
digits are unchanged.
Sign may change; other positions are
unchanged.
Sign may change; other positions are
unchanged.
Sign and the other six digits are
unC"hnngll'!rl
Positions
2-5
and
6-9
are
interchanged.
Branch 1f indexing portion
(incremented by
I)
is not greater
than non-indexing portion.
Branch if decremented indexing
portion is
not
brought ta zero or
beyond non-indexing value.
*Operation;
0.
Shift right
I. Shift
right and round
2.
Sh;ft left
3. Shift left and count
~operation,
normal:
0.
Shift right
1. Shift right and round
2.
Shift lcf1
3.
Shift left and count
'Operation, split:
4. Shift right from point Ace J.
5.
Shift left from point Ace
1
6, Shift right from point Ace
2
7.
Shift left from point Ace
2
Beginning:
Multiplicand in
Accumulator
3.
End
Product in Accumulators
1 and 2; multiplicand in
Accumu lotor
3.
Beginning: Dividend :n Accumulators
1 and 2.
End
Ouotient in Accumulator
2,
rem.::iinder in
Accumulator 1; divisor
in Accumulator
3.
0 -
Allow; I - M+uk
Service Checks, Adjustment and Removal
Proc~dures
(3/71)
117
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