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Intel 80286

Intel 80286
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OVERVIEW OF NUMERIC PROCESSING
Table 1-15. Real and Long Real Encodings
Class
Sign
Biased Signlficand·
Exponent
ilff...ff
0
11
...
11
11
...
11
· ·
·
NaNs
· ·
·
· ·
·
0
11
...
11
00
...
01
00
0
11
...
11
00
...
00
0)
0
11
...
10
11
...
11
GI
· ·
·
(jj
Normals
·
· ·
0
a.
·
·
·
0
00
...
01
00
...
00
0
00
...
00
11
...
11
·
·
·
Denormals
· ·
·
·
·
·
0 00
...
00 00
...
01
III
Zero
0
00 ... 00
00
...
00
-
10
GI
a::
Zero
1
00
...
00
00
...
00
1 00
...
00
00
...
01
· ·
·
Denormals
·
·
·
· ·
·
1
00 ... 00
11
...
11
1 00 ...
01
00
...
00
· ·
·
Normals
· ·
·
·
·
·
0)
1
11
... 10
11
...
11
GI
1ii
00
1
11...11
00
...
00
DI
GI
Z
1 11...11 00
...
01
· ·
·
·
·
·
· ·
·
III
Z
Indefinite
1
11...11 10
...
00
I'll
Z
·
·
·
· ·
·
· ·
·
1 11...11
11
...
1.1
Short:
1...-
8 bits
----..1
..
23
bits
--
.....
Long:
1-+--11
52
bits--
.....
"Integer bit is implied and not stored.
1-31
pcjs.org

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