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參數(shù)資料
| 型號： | M80287 |
| 廠商： | Intel Corp. |
| 英文描述： | 80-BIT HMOS* NUMERIC PROCESSOR EXTENSION |
| 中文描述： | 80位的保健組織*數(shù)值處理器擴展 |
| 文件頁數(shù)： | 24/24頁 |
| 文件大小： | 399K |
| 代理商： | M80287 |
M80287
Table 6. M80287 Extensions to the M80286 Instruction Set
(Continued)
271029–15
NOTES:
1. if mod
e
00 then DISP
e
0
*
, disp-low and disp-high are absent
if mod
e
01 then DISP
e
disp-low sign-extended to 16-bits, disp-high is absent
if mod
e
10 then DISP
e
disp-high; disp-low
if mod
e
11 then r/m is treated as an ST(i) field
2. if r/m
e
000 then EA
e
(BX)
a
(SI)
a
DISP
if r/m
e
001 then EA
e
(BX)
a
(DI)
a
DISP
if r/m
e
010 then EA
e
(BP)
a
(SI)
a
DISP
if r/m
e
011 then EA
e
(BP)
a
(DI)
a
DISP
if r/m
e
100 then EA
e
(SI)
a
DISP
if r/m
e
101 then EA
e
(DI)
a
DISP
if r/m
e
110 then EA
e
(BP)
a
DISP
if r/m
e
111 then EA
e
(BX)
a
DISP
*
except if mod
e
000 and r/m
e
110 then EA
e
disp-high; disp-low.
3. MF
e
Memory Format
00D32-bit Real
01D32-bit Integer
10D64-bit Real
11D16-bit Integer
4. ST(0)
e
Current stack top
ST(i)
i
th
register below stack top
5. d
e
Destination
0DDestination is ST(0)
1DDestination is ST(i)
6. P
e
Pop
0DNo pop
1DPop ST(0)
7. R
e
Reverse: When d
e
1 reverse the sense of R
0DDestination (op) Source
1DSource (op) Destination
8. For
FSQRT:
b
0
s
ST(0)
s
a
%
For
FSCALE:
b
2
15
s
ST(1)
k
a
2
15
and ST(1) integer
For
F2XM1:
0
s
ST(0)
s
2
b
1
For
FYL2X:
0
k
ST(0)
k
%
b
%
k
ST(1)
k
a
%
For
FYL2XP1:
0
s
IST(0)I
k
(2
b
S
2)/2
b
%
k
ST(1)
k
%
For
FPTAN:
0
s
ST(0)
s
q
/4
For
FPATAN:
0
s
ST(0)
k
ST(1)
k
a
%
9. ESCAPE bit pattern is 11011.
INTEL CORPORATION, 2200 Mission College Blvd., Santa Clara, CA 95052; Tel. (408) 765-8080
INTEL CORPORATION (U.K.) Ltd., Swindon, United Kingdom; Tel. (0793) 696 000
INTEL JAPAN k.k., Ibaraki-ken; Tel. 029747-8511
Printed in U.S.A./xxxx/1296/2.5K/RP SM
Military Operation
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