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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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PC912XDP512F0MPVR 데이터시트(PDF) 293 Page - Freescale Semiconductor, Inc |
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PC912XDP512F0MPVR 데이터시트(HTML) 293 Page - Freescale Semiconductor, Inc |
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293 / 1348 page  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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