Compaq 21264 User Manual

Page 270

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A–4

Alpha Instruction Set

Alpha 21264/EV67 Hardware Reference Manual

Alpha Instruction Summary

CVTGQ

F-P

15.0AF

Convert G_floating to quadword

CVTLQ

F-P

17.010

Convert longword to quadword

CVTQF

F-P

15.0BC

Convert quadword to F_floating

CVTQG

F-P

15.0BE

Convert quadword to G_floating

CVTQL

F-P

17.030

Convert quadword to longword

CVTQS

F-P

16.0BC

Convert quadword to S_floating

CVTQT

F-P

16.0BE

Convert quadword to T_floating

CVTST

F-P

16.2AC

Convert S_floating to T_floating

CVTTQ

F-P

16.0AF

Convert T_floating to quadword

CVTTS

F-P

16.0AC

Convert T_floating to S_floating

DIVF F-P

15.083

Divide

F_floating

DIVG

F-P

15.0A3

Divide G_floating

DIVS F-P

16.083

Divide

S_floating

DIVT

F-P

16.0A3

Divide T_floating

ECB

Mfc

18.E800 Evict cache block

EQV Opr

11.48

Logical

equivalence

EXCB

Mfc

18.0400 Exception barrier

EXTBL

Opr

12.06

Extract byte low

EXTLH

Opr

12.6A

Extract longword high

EXTLL

Opr

12.26

Extract longword low

EXTQH

Opr

12.7A

Extract quadword high

EXTQL

Opr

12.36

Extract quadword low

EXTWH

Opr

12.5A

Extract word high

EXTWL

Opr

12.16

Extract word low

FBEQ

Bra

31

Floating branch if

=

zero

FBGE

Bra

36

Floating branch if

zero

FBGT

Bra

37

Floating branch if > zero

FBLE

Bra

33

Floating branch if

zero

FBLT

Bra

32

Floating branch if < zero

FBNE Bra

35

Floating branch if

zero

FCMOVEQ

F-P

17.02A FCMOVE if

=

zero

FCMOVGE F-P

17.02D

FCMOVE

if

zero

Table A–2 Architecture Instructions (Continued)

Mnemonic

Format

Opcode

Description

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