Intel 80286

PROGRAMMING NUMERIC APPLICATIONS
Table 2·14.
Instruction Set Reference Data
FABS FABS (no operands)
Exceptions: I
Absolute value
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical Range
Transfers Bytes
(no operands)
14 10·17
0
2 FABS
FADD FADD //source/destination,source
Exceptions:
I, D, 0, U, P
Add real
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical Range
Transfers Bytes
//ST,ST(i)/ST(i),ST
85
70-100
0
2 FADD ST,ST(4)
short-real
105
90-120 2 2-4 FADD AIR_TEMP [SI]
long-real
110 95-125 4 2-4 FADD [BX].MEAN
..
FADDP
FADDP destination, source
Exceptions:
I, D, 0, U, P
Add real and pop
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical
Range
Transfers Bytes
ST(i),ST 90 75-105 0 2 FADDP ST(2),ST
FBLD FBLD source
Exceptions: I
Packed decimal (BCD) load
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical Range
Transfers Bytes
packed-decimal
300
290-310 5
2-4 FBLD YTD_SALES
FBSTP
FBSTP destination
Exceptions: I
Packed decimal (BCD) store and pop
Execution Clocks
Operands
Operand Word Code
Coding Example
Typical
Range
Transfers Bytes
packed-decimal
530
520-540
5
2-4 FBSTP [BX].FORECAST
2-24
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