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80C187 Datasheet(PDF) 28 Page - Intel Corporation

Part # 80C187
Description  80-BIT MATH COPROCESSOR
PDF  30 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

80C187 Datasheet(HTML) 28 Page - Intel Corporation

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80C187
80C187 Extensions to the 80C186 Instruction Set
Encoding
Clock Count Range
Instruction
Byte
Byte
Optional
32-Bit
32-Bit
64-Bit
16-Bit
0
1
Bytes 2 – 3
Real
Integer
Real
Integer
DATA TRANSFER
FLD e
Loada
Integerreal memory to ST(0)
ESC MF 1
MOD 000 RM
DISP
40
65 – 72
59
67 – 71
Long integer memory to ST(0)
ESC 111
MOD 101 RM
DISP
90 – 101
Extended real memory to ST(0)
ESC 011
MOD 101 RM
DISP
74
BCD memory to ST(0)
ESC 111
MOD 100 RM
DISP
296 – 305
ST(i) to ST(0)
ESC 001
11000 ST(i)
16
FST e
Store
ST(0) to integerreal memory
ESC MF 1
MOD 010 RM
DISP
58
93 – 107
73
80 – 93
ST(0) to ST(i)
ESC 101
11010 ST(i)
13
FSTP e
Store and Pop
ST(0) to integerreal memory
ESC MF 1
MOD 011 RM
DISP
58
93 – 107
73
80 – 93
ST(0) to long integer memory
ESC 111
MOD 111 RM
DISP
116 – 133
ST(0) to extended real
ESC 011
MOD 111 RM
DISP
83
ST(0) to BCD memory
ESC 111
MOD 110 RM
DISP
542 – 564
ST(0) to ST(i)
ESC 101
11001 ST (i)
14
FXCH e
Exchange
ST(i) and ST(0)
ESC 001
11001 ST(i)
20
COMPARISON
FCOM e
Compare
Integerreal memory to ST(0)
ESC MF 0
MOD 010 RM
DISP
48
78 – 85
67
77 – 81
ST(i) to ST(0)
ESC 000
11010 ST(i)
26
FCOMP e
Compare and pop
Integerreal memory to ST
ESC MF 0
MOD 011 RM
DISP
48
78 – 85
67
77 – 81
ST(i) to ST(0)
ESC 000
11011 ST(i)
28
FCOMPP e
Compare and pop twice
ST(1) to ST(0)
ESC 110
1101 1001
28
FTST e
Test ST(0)
ESC 001
1110 0100
30
FUCOM e
Unordered compare
ESC 101
11100 ST(i)
26
FUCOMP e
Unordered compare
and pop
ESC 101
11101 ST(i)
28
FUCOMPP e
Unordered compare
and pop twice
ESC 010
1110 1001
28
FXAM e
Examine ST(0)
ESC 001
11100101
32-40
CONSTANTS
FLDZ e
Load a00 into ST(0)
ESC 001
1110 1110
22
FLD1 e
Load a10 into ST(0)
ESC 001
1110 1000
26
FLDPI e
Load pi into ST(0)
ESC 001
1110 1011
42
FLDL2T e
Load log2(10) into ST(0)
ESC 001
1110 1001
42
Shaded areas indicate instructions not available in 8087
NOTE
a When loading single- or double-precision zero from memory add 5 clocks
28



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