mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 250

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 6 XGATE (S12XGATEV2)
CMPL
Operation
RS.L – IMM8
Subtracts the 8 bit constant IMM8 contained in the instruction code from the low byte of the source register
RS.L using binary subtraction and updates the condition code register accordingly.
Remark: There is no equivalent operation using triadic addressing. Comparing the values of two registers
can be performed by using the subtract instruction with R0 as destination register.
CCR Effects
Code and CPU Cycles
250
N:
Z:
V:
C:
CMPL RS, #IMM8
N
Set if bit 7 of the result is set; cleared otherwise.
Set if the 8 bit result is $00; cleared otherwise.
Set if a two´s complement overflow resulted from the 8 bit operation; cleared otherwise.
RS[7] & IMM8[7] & result[7] | RS[7] & IMM8[7] & result[7]
Set if there is a carry from the Bit 7 to Bit 8 of the result; cleared otherwise.
RS[7] & IMM8[7] | RS[7] & result[7] | IMM8[7] & result[7]
Z
V
Source Form
C
NONE, only condition code flags get updated
Compare Immediate 8 bit Constant
Address
MC9S12XDP512 Data Sheet, Rev. 2.17
Mode
IMM8
1
(Low Byte)
1
0
1
0
Machine Code
RS
IMM8
CMPL
Freescale Semiconductor
Cycles
P