Multiply Signed 16 LSB x Signed 16 MSB

 

MPYLH

 

 

 

Multiply Signed 16 LSB y Signed 16 MSB

 

 

 

 

 

 

 

 

MPYLH

 

 

 

 

 

 

 

 

 

 

Syntax

 

 

 

 

MPYLH (.unit) src1, src2, dst

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.unit = .M1 or .M2

 

 

 

 

 

 

 

 

 

 

 

 

 

Compatibility

 

 

C62x, C64x, C67x, and C67x+ CPU

 

 

 

 

 

 

 

 

 

 

 

Opcode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

31

29

28

27

23

22

18

17

13

12

11

7

6

5

4

3

2

1

0

creg

z

dst

src2

src1

x

1 0 0 0 1 0

0 0 0 0 s p

3 155511 1

Opcode map field used...

For operand type...

Unit

 

 

 

src1

slsb16

.M1, .M2

src2

xsmsb16

 

dst

sint

 

 

 

 

Description

Execution

Pipeline

The src1 operand is multiplied by the src2 operand. The result is placed in dst. The source operands are signed by default.

if (cond)

lsb16(src1) msb16(src2) dst

else nop

 

 

 

 

 

 

 

Pipeline

E1

E2

Stage

 

 

 

 

Read

src1, src2

 

 

Written

 

dst

Unit in use

.M

 

 

 

 

 

 

Instruction Type

Multiply (16 16)

Delay Slots

1

See Also

MPYLHU, MPYLSHU, MPYLUHS, SMPYLH

SPRU733

Instruction Set

3-161

Page 221
Image 221
Texas Instruments TMS320C67X/C67X+ DSP Multiply Signed 16 LSB y Signed 16 MSB, Mpylh, MPYLHU, MPYLSHU, MPYLUHS, Smpylh