mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 653

• Manufacturer Part Number: mc9s12xf512
• Description: S12x Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

ADDH
Operation
RD + IMM8:$00 ⇒ RD
Adds the content of high byte of register RD and a signed immediate 8 bit constant using binary addition
and stores the result in the high byte of the destination register RD. This instruction can be used after an
ADDL for a 16 bit immediate addition.
Example:
CCR Effects
Code and CPU Cycles
Freescale Semiconductor
N:
Z:
V:
C:
ADDH RD, #IMM8
N
∆
Set if bit 15 of the result is set; cleared otherwise.
Set if the result is $0000; cleared otherwise.
Set if a two´s complement overflow resulted from the operation; cleared otherwise.
RD[15]
Set if there is a carry from the bit 15 of the result; cleared otherwise.
RD[15]
Z
∆
ADDL
ADDH
old
old
V
∆
Source Form
& IMM8[7] & RD[15]
& IMM8[7] | RD[15]
C
∆
R2,#LOWBYTE
R2,#HIGHBYTE
old
new
MC9S12XF - Family Reference Manual, Rev.1.19
& RD[15]
| RD[15]
Add Immediate 8 bit Constant
Address
Mode
IMM8
new
; R2 = R2 + 16 bit immediate
old
& IMM8[7] & RD[15]
| IMM8[7] & RD[15]
(High Byte)
1
1
1
0
new
1
new
Machine Code
RD
Chapter 14 XGATE (S12XGATEV3)
IMM8
ADDH
Cycles
P
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