mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 294

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

Chapter 6 XGATE (S12XGATEV2)
XGATE_DATA_FLASH
XGATE_DATA_SCI
XGATE_DATA_IDX
XGATE_DATA_MSG
XGATE_CODE_FLASH
XGATE_CODE_DONE
XGATE_CODE_FLASH_END
XGATE_DUMMY_ISR_XG
294
;###########################################
;#
;###########################################
ALIGN 1
EQU
EQU
DW
EQU
DB
EQU
FCC
DB
;###########################################
;#
;###########################################
ALIGN 1
LDW
LDB
LDB
STB
LDB
STB
CMPL R4,#$0D
BEQ
RTS
LDL
STB
LDL
STB
RTS
EQU
*
*-XGATE_DATA_FLASH
SCI_REGS
*-XGATE_DATA_FLASH
XGATE_DATA_MSG
*-XGATE_DATA_FLASH
"Hello World!
$0D
R2,(R1,#XGATE_DATA_SCI);SCI -> R2
R3,(R1,#XGATE_DATA_IDX);msg -> R3
R4,(R1,R3+)
R3,(R1,#XGATE_DATA_IDX);R3 -> idx
R0,(R2,#(SCISR1-SCI_REGS));initiate SCI transmit
R4,(R2,#(SCIDRL-SCI_REGS));initiate SCI transmit
XGATE_CODE_DONE
R4,#$00
R4,(R2,#(SCICR2-SCI_REGS))
R3,#XGATE_DATA_MSG;reset R3
R3,(R1,#XGATE_DATA_IDX)
(XGATE_CODE_FLASH_END-XGATE_CODE_FLASH)+XGATE_CODE_XG
MC9S12XDP512 Data Sheet, Rev. 2.17
XGATE CODE
XGATE DATA
;pointer to SCI register space
;string pointer
;ASCII string
;CR
;curr. char -> R4
;disable SCI interrupts
#
#
Freescale Semiconductor