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SC312XDP512F0MPVR датащи(PDF) 293 Page - Freescale Semiconductor, Inc

номер детали SC312XDP512F0MPVR
подробное описание детали  HCS12X Microcontrollers
PDF  1348 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

SC312XDP512F0MPVR датащи(HTML) 293 Page - Freescale Semiconductor, Inc

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Chapter 6 XGATE (S12XGATEV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
293
;###########################################
;#
INITIALIZE XGATE
#
;###########################################
INIT_XGATE
MOVW
#XGMCTL_CLEAR , XGMCTL;clear all XGMCTL bits
INIT_XGATE_BUSY_LOOP
TST
XGCHID
;wait until current thread is finished
BNE
INIT_XGATE_BUSY_LOOP
LDX
#XGIF
;clear all channel interrupt flags
LDD
#$FFFF
STD
2,X+
STD
2,X+
STD
2,X+
STD
2,X+
STD
2,X+
STD
2,X+
STD
2,X+
STD
2,X+
MOVW
#XGATE_VECTORS_XG, XGVBR;set vector base register
MOVW
#$FF00, XGSWT
;clear all software triggers
;###########################################
;#
INITIALIZE XGATE VECTOR TABLE
#
;###########################################
LDAA
#128
;build XGATE vector table
LDY
#XGATE_VECTORS
INIT_XGATE_VECTAB_LOOP
MOVW
#XGATE_DUMMY_ISR_XG, 4,Y+
DBNE
A, INIT_XGATE_VECTAB_LOOP
MOVW
#XGATE_CODE_XG, RAM_START+(2*SCI_VEC)
MOVW
#XGATE_DATA_XG, RAM_START+(2*SCI_VEC)+2
;###########################################
;#
COPY XGATE CODE
#
;###########################################
COPY_XGATE_CODE
LDX
#XGATE_DATA_FLASH
COPY_XGATE_CODE_LOOP
MOVW
2,X+, 2,Y+
MOVW
2,X+, 2,Y+
MOVW
2,X+, 2,Y+
MOVW
2,X+, 2,Y+
CPX
#XGATE_CODE_FLASH_END
BLS
COPY_XGATE_CODE_LOOP
;###########################################
;#
START XGATE
#
;###########################################
START_XGATE
MOVW
#XGMCTL_ENABLE, XGMCTL;enable XGATE
BRA
*
;###########################################
;#
DUMMY INTERRUPT SERVICE ROUTINE
#
;###########################################
DUMMY_ISR
RTI
CPU
XGATE



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