Chapter 9 XGATE (S12XGATEV2)
MC9S12XDP512 Data Sheet, Rev. 2.11
Freescale Semiconductor 475
Operation
RS – 0NONE (translates to SUB R0, RS, R0)
Subtracts zero from the content of register RS using binary subtraction and discards the result.
CCR Effects
Code and CPU Cycles
TST Test Register TST
NZVC
∆∆∆∆
N: Set if bit 15 of the result is set; cleared otherwise.
Z: Set if the result is $0000; cleared otherwise.
V: Set if a two´s complement overflow resulted from the operation; cleared otherwise.
RS[15] & result[15]
C: Set if there is a carry from the bit 15 of the result; cleared otherwise.
RS1[15] & result[15]
Source Form Address
Mode Machine Code Cycles
TST RS TRI 0 0 0 1 1 0 0 0 RS1 0 0 0 0 0 P