RCA Spectra 70 - Page 239

SUMMARY OF INSTRUCTIONS (Cont'd)
Decimal Arithmetic Instructions (Cont/d)
Timing (,ased
Instruction
Op(16)
Mnemonic Format Interrupt Action Condition Code
(Average and Includes Staticizing)
70/46
Divide Decimal
FD
DP
SS
1. Address error. Unchanged.
26.81 + 36.71L
1
-
35.14L
2
+
2. Data error. 5.40L:! (L
1
-
L
2
)
3. Decimal divide error.
Move with Offset
F1
MVO
SS
1. Address error. Unchanged.
11.52 + 1.92L
1
+ 0.96L2
Multiply Decimal
FC MP
SS 1. Address error.
Unchanged.
28.97 + 16.96L
1
- 14.35L
2
+
2. Data error.
2.34L
2
(Ll - L
2
)
Pack
F2
PACK
SS
1. Address error.
Unchanged.
9.36 + 1.92L
1
+ 0.96L2
Subtract Decimal FB SP
SS
1. Address error.
0- Diff. is zero.
15.84
+ 1.80L
1
+ 0.42L
2
2.
Data error.
1- Diff. is less than zero.
(Note 1)
3. Decimal overflow.
2 - Diff.
is greater than zero.
3 - Overflow.
Unpack F3
UNPK
SS
1. Address error.
Unchanged.
10.38 + 0.96L
1
+ 0.90L
2
Zero and Add
F8
ZAP
SS
1. Address error.
0- Result is zero.
15.96
+ 1.08L
1
+ 0.42L
2
2. Data error.
1 - Result is less than zero.
(Note 1)
3. Decimal overflow.
2 -
Result is greater than zero.
3 - Overflow.
Log ica I Instructions
54
N
RX 1. Address error.
o - Result is zero. 8.40
1- Result is not zero.
D4
NC
SS
2- Not used. 12.07 + 2.22L
And
3 - Not used.
94
NI
Sl
6.96
14
NR
RR
5.28