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Appendix A
Instruction Summary
Operation
Operation
SPS
Instruction Time
I nstruct ion
Code
Notes
Code
Modifier
Mnemonic
1620 Modell
Add
21
A
160+80Dp Basic Time
If signs initially unlike and numerical value of
80 Dp recomp time
Q data is greater than P data.
Add
(I)
11
AM
Same as Add
Branch
49
B
200
Branch and Transmit
27
BT
200+40DQ
Branch and Transmit (I)
17
BTM
Same as above
*Branch and Transmit
07
BTFL
240+40L
Floating
Branch Back
42
BB
200
Branch Indicator
46
BI
160 No Branch
Add 90 ms to times when testing indicators 18-19,
200 Branch
21-23,27-29,40-45,48-59.
Branch No Flag
44
BNF
200 No Branch
240 Branch
Branch No Indicator
47
BNI
160 No Branch
200 Branch
*Branch No Group Mark
55
BNG
200 No Branch
240 Branch
Branch No Record Mark
45
BNR
200 No Branch
240 Branch
Branch on Digit
43
BD
200 No Branch
240 Branch
**Branch Out
47
Q
11
=O
BO
200
Q8- Q 9 Must be 00
**Branch Out and Load
47
Q
11
=1
BOLD
200
Q8- Q 9 Must be 00
*Check Disk
36
320+20,000+2,0005,
Q8- Q 9 Must be 07
Q
11
=1
CDGN
average time
Cneck one sector - with WLRC
Qll=3
CDN
(S=Number of Sectors)
Check one sector - no WLRC
Qll=5
CTGN
Check fv II track - wi th W LRC
Q
I1
=7
CTN
Check full Track - no WLRC
Clear Flag
33
CF
200
Compare
24
C
200+80 DZ-Unlike signs
DZ = Number of positions compared until a digit
160+80 DP-Like signs
other than zero is detected in either field.
Compare
(I)
14
CM
Same as above
Control
34
K
Depends on control function
and speed of I/O Unit
*Divide
29
D
1 60+520 DVQT+74OQ T
Avg Quotient = 4.5 Digits
*Divide
(I)
19
DM
Same as above
Same as above
Dump Numeric
35
DN
Depends on speed of
I/o
unit and number of char-
acters involved.
*Floating Add
01
FADD
400+ 1 OOL Basic Time
If signs initially unlike and numerical value
800L Recomp. Time
of Q data is greater than P data.
*Floating Divide
09
FDIV
880+940L+520L
2
Avg Quotient = 4.5 Digits
*Floating Multiply
03
FMUL
I 120+80L+I68L
2
L
Z
= Number of zero digits in multiplier.
*Floating Shift Left
05
FSL
200+40L +40 L
I
L
I
= Number of digits mantissa is increased
by shift left.
*Floating Shift Right
08
FSR
200+40L
59
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