RCA Spectra 70 - Page 244

Halve (Long)
24 HDR
RR 1. Address error.
8.16
Unchanged.
Halve (Short)
34 HER
RR
6.00
Load Complement
23 LCDR
RR
1. Address error.
o - Result mantissa zero.
(lbng)
1- Result mantissa less than
8.16
zero.
Load Complement
33
LCER
RR
2 - Result mantissa greater
(Short)
than zero.
6.00
3-Not used.
68
LD
RX
1. Address error.
13.68
Load (Long)
28
LDR
RR
8.64
78
LE
RX
Unchanged.
9.84
Load (Short)
38
LER
RR
6.72
Load Negative
21
LNDR
RR
1. Address error.
o - Result mantissa zero.
(L()ng)
1 -
Result mantissa less than
7.68
zero.
Load Negative
31 LNER
RR
2-Not used.
5.52
(Short)
3-Not used.
Load Positive
20
LPDR
RR
1. Address error.
o - Result mantissa zero.
7.68
(Long)
1-Not used.
2 - Result mantissa greater
Load Positive
30
LPER
RR
than zero.
5.52
(Short)
3-Not used.
Load and Test
22
LTDR
RR
1. Address error.
o - Result mantissa zero.
(Long)
1 - Result mantissa less than
8.16
zero.
Load and Test 32
LTER
RR
2 - Result mantissa greater
(Short)
than zero.
6.00
3-Not used.
6C MD
RX
1. Address error.
186.55
Multiply (Long)
2C
MDR
RR
2. Exponent overflow.
3. Exponent underflow.
181.51
7C
ME
RX
Unchanged.
49.42
MUltiply (Short)
3C MER
RR
46.40
Stoore
(Long)
60 STD
RX 1. Address error. 11.28
Sto-re (Short)
70
STE
Unchanged.
RX 8.40
Legend:
EX - object instruction execution time.