pg_0781

Index

A-17

OPCODE MAP

Table A-13. DB Opcode Map When ModR/M Byte is Within 00H to BFH

NOTE:

1.All blanks in the opcode map are reserved and should not be used. Do not depend on the operation of

these undefined opcodes.

Table A-14 shows the opcode map if the accompanying ModR/M byte is outside the range of

00H to BFH. In this case the first digit of the ModR/M byte selects the row in the table and the

second digit selects the column.

Table A-14. DB Opcode Map When ModR/M Byte is Outside 00H to BFH

NOTE:

1.All blanks in the opcode map are reserved and should not be used. Do not depend on the operation of

these undefined opcodes.

nnn Field of ModR/M Byte (refer to Figure A-1)

000

001

010

011

100101110

111

FILD

dword-integer

FIST

dword-integer

FISTP

dword-integer

FLD

extended-real

FSTP

extended-real

FCMOVNB