參數(shù)資料
型號: INTEL387DX
英文描述: Intel387 DX - MATH COPROCESSOR
中文描述: Intel387霉素-數(shù)學(xué)協(xié)處理器
文件頁數(shù): 7/41頁
文件大小: 435K
代理商: INTEL387DX
Intel387
TM
DX MATH COPROCESSOR
Table 2.1. Intel387
TM
DX MCP Data Type Representation in Memory
240448–2
NOTES:
(1) S
e
Sign bit (0
e
positive, 1
e
negative)
(2) d
n
e
Decimal digit (two per byte)
(3) X
e
Bits have no significance; Intel387
TM
DX MCP ignores when loading, zeros when storing
(4)
U
e
Position of implicit binary point
(5) I
e
Integer bit of significand; stored in temporary real, implicit in single and double precision
(6) Exponent Bias (normalized values):
Single: 127 (7FH)
Double: 1023 (3FFH)
Extended Real: 16383 (3FFFH)
(7) Packed BCD: (
1)
S
(D
17
...D
)
(8) Real: (
b
1)
S
(2
E-BIAS
) (F
0
F
1
...)
7
7
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