Format

Syntax:

Operation:

Operands:

Architecture revision

Opcode

1

psubh.ub Rd, Rx, Ry

Rd[31:24] = LSR(ZE(Rx[31:24], 9) - ZE(Ry[31:24], 9), 1); 
Rd[23:16] = LSR(ZE(Rx[23:16], 9) - ZE(Ry[23:16], 9), 1);
Rd[15:8] = LSR(ZE(Rx[15:8], 9) - ZE(Ry[15:8], 9), 1); 
Rd[7:0] = LSR(ZE(Rx[7:0], 9) - ZE(Ry[7:0], 9), 1);

{d, x, y} ∈ {0, 1, …, 15}

Rev1+

2

psubh.sh Rd, Rx, Ry

Rd[31:16] = ASR(SE(Rx[31:16], 17) - SE(Ry[31:16], 17), 1);
Rd[15:0] = ASR(SE(Rx[15:0], 17) - SE(Ry[15:0], 17), 1);

{d, x, y} ∈ {0, 1, …, 15}

Rev1+

Q:

Not affected.

V:

Not affected.

N:

Not affected.

Z:

Not affected.

C:

Not affected.