Operations:

Format

Syntax:

Operation:

Operands:

Architecture revision

Opcode

1

mulnhh.w Rd, Rx:<part>, Ry:<part> 

If (Rx-part == t) then operand1 = SE(Rx[31:16]) else operand1 = SE(Rx[15:0]);
If (Ry-part == t) then operand2 = SE(Ry[31:16]) else operand2 = SE(Ry[15:0]);
Rd = - (operand1 × operand2);
 
{d, x, y} ∈ {0, 1, …, 15}
part ∈ {t,b}

Rev1+

111

Rx

00000

Ry

0000000110

X

Y

Rd

3

4

5

4

10

1

1

4

Description

Multiplies the two halfword registers specified and stores the result in the destination word-regis- ter. The halfword registers are selected as either the high or low part of the operand registers. The result is negated.

Status Flags:

Q:

Not affected.

V:

Not affected.

N:

Not affected.

Z:

Not affected.

C:

Not affected.