Chapter 9 XGATE (S12XGATEV2)
MC9S12XDP512 Data Sheet, Rev. 2.11
476 Freescale Semiconductor
Operation
~(RS1 ^ RS2)RD~(RD ^ IMM16) RD
(translates to XNOR RD, #IMM[15:8]; XNOR RD, #IMM16[7:0])
Performs a bit wise logical exclusive NOR between two 16-bit values and stores the result in the
destination register RD.
Remark: Using R0 as a source registers will calculate the one’s complement of the other source register.
Using R0 as both source operands will fill RD with $FFFF.
CCR Effects
Code and CPU Cycles
XNOR Logical Exclusive NOR XNOR
NZVC
∆∆0—
N: Set if bit 15 of the result is set; cleared otherwise.
Z: Set if the result is $0000; cleared otherwise.
V: 0; cleared.
C: Not affected.
Source Form Address
Mode Machine Code Cycles
XNOR RD, RS1, RS2 TRI 0 0 0 1 0 RD RS1 RS2 1 1 P
XNOR RD, #IMM16 IMM8 1 0 1 1 0 RD IMM16[7:0] P
IMM8 1 0 1 1 1 RD IMM16[15:8] P