S12X请高手解答！！

高手, 解答

近期看DATASHEET有几个疑点，现在归纳下发出来，希望版主/高手给咱解答下~

请问：

1：S12X系列的中断优先级设置(不用XGATE，CPU处理全部中断)是否也在INT_CFDATA0-7和INT_CFDDR里面？

2：用XGATE处理中断时候，如果我有INT0和INT1两个中断，但是他们的向量地址差别很大（比如:Vector_int0=0x65,Vector_int1=0xe9）,在设置的时候是依次把他们所对应的值写入INT_CFDDR，INT_CFDATAi里面（其它Register已设置好）后，XGATE就能响应这两个中断了吗？

3：XGATE是否有自己的中断向量表，且和S12X内核的向量表不一样？

4：若我需要访问外部RAM，而且也需要用到内部RAM，硬件软件编写设置上该怎么实现？（我知道这个问题提的太宽了，但最好有完全的答案，呵呵~~;如果高手们不忙的话可以给俺说说你们在遇到这样的情况时是怎么解决的，参考下）。

5：问题类似上面的：如果我内外部的数据和程序存储器都需要用到那么硬件软件编写设置上友该怎么实现呢？

我的邮箱：nvdn_lion@126.com，希望和大家一起交流共同进步！

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nujia发表于 2009-6-12 15:06 | 只看该作者

1
2.这是初始化，可以用，
;--2TH XGATE->RUNNING XGATE SUBROUTINES IN RAM $FC1000 TO $FD1FFF(8K)------------------------*
;-------------initialize the XGATE vector block and------------------------------------------*
LDX #XGATE_VECTORS_XG_RAM ;*
STX XGVBR ;=$386 set the XGVBR register to its start address ;*
;-------------------------------------------------------------------------------------------;*

; switch ECTCH3_VEC interrupt to XGATE
MOVB #(ECTCH3_VEC & $F0), INT_CFADDR
MOVB #$80|$01, INT_CFDATA0 + ((ECTCH3_VEC & $0F) >> 1)

; switch ECTCH4_VEC interrupt to XGATE
MOVB #(ECTCH4_VEC & $F0), INT_CFADDR
MOVB #$80|$01, INT_CFDATA0 + ((ECTCH4_VEC & $0F) >> 1)

; switch PIT0_VEC interrupt to XGATE
MOVB #(PIT0_VEC & $F0), INT_CFADDR
MOVB #$80|$01, INT_CFDATA0 + ((PIT0_VEC & $0F) >> 1)

; enable XGATE mode and interrupts
MOVW #$FBC1, XGMCTL ; XGE | XGFRZ | XGIE

; force execution of software trigger 0 handler
; MOVW #$0101, XGSWT

3.这是向量表

ORG $E08800 LOGICAL

XGATE_VectorTable: ;XGATE 中断向量表，可以放在任意位置。

; Channel_# = Vector address / 2
Channel_00: FDB ErrorHandler, 0 ; Reserved ;FDB 伪指令与DC.W相同。
Channel_01: FDB ErrorHandler, 1 ; Reserved ;FDB 伪指令与DC.W相同。
Channel_02: FDB ErrorHandler, 2 ; Reserved ;FDB 伪指令与DC.W相同。
Channel_03: FDB ErrorHandler, 3 ; Reserved ;FDB 伪指令与DC.W相同。
Channel_04: FDB ErrorHandler, 4 ; Reserved ;FDB 伪指令与DC.W相同。
Channel_05: FDB ErrorHandler, 5 ; Reserved
Channel_06: FDB ErrorHandler, 6 ; Reserved
Channel_07: FDB ErrorHandler, 7 ; Reserved
Channel_08: FDB ErrorHandler, 8 ; Spurious Interrupt
Channel_09: FDB ErrorHandler, 9 ; Reserved
Channel_0A: FDB ErrorHandler,10 ; Reserved
Channel_0B: FDB ErrorHandler,11 ; Reserved
Channel_0C: FDB ErrorHandler,12 ; Reserved
Channel_0D: FDB ErrorHandler,13 ; Reserved
Channel_0E: FDB ErrorHandler,14 ; Reserved
Channel_0F: FDB ErrorHandler,15 ; Reserved
Channel_10: FDB ErrorHandler,16 ; Reserved
Channel_11: FDB ErrorHandler,17 ; Reserved
Channel_12: FDB ErrorHandler,18 ; Reserved
Channel_13: FDB ErrorHandler,19 ; Reserved
Channel_14: FDB ErrorHandler,20 ; Reserved
Channel_15: FDB ErrorHandler,21 ; Reserved
Channel_16: FDB ErrorHandler,22 ; Reserved
Channel_17: FDB ErrorHandler,23 ; Reserved
Channel_18: FDB ErrorHandler,24 ; Reserved
Channel_19: FDB ErrorHandler,25 ; Reserved
Channel_1A: FDB ErrorHandler,26 ; Reserved
Channel_1B: FDB ErrorHandler,27 ; Reserved
Channel_1C: FDB ErrorHandler,28 ; Reserved
Channel_1D: FDB ErrorHandler,29 ; Reserved
Channel_1E: FDB ErrorHandler,30 ; Reserved
Channel_1F: FDB ErrorHandler,31 ; Reserved
Channel_20: FDB ErrorHandler,32 ; Reserved
Channel_21: FDB ErrorHandler,33 ; Reserved
Channel_22: FDB ErrorHandler,34 ; Reserved
Channel_23: FDB ErrorHandler,35 ; Reserved
Channel_24: FDB ErrorHandler,36 ; Reserved
Channel_25: FDB ErrorHandler,37 ; Reserved
Channel_26: FDB ErrorHandler,38 ; Reserved
Channel_27: FDB ErrorHandler,39 ; Reserved
Channel_28: FDB ErrorHandler,40 ; Reserved
Channel_29: FDB ErrorHandler,41 ; Reserved
Channel_2A: FDB ErrorHandler,42 ; Reserved
Channel_2B: FDB ErrorHandler,43 ; Reserved
Channel_2C: FDB ErrorHandler,44 ; Reserved
Channel_2D: FDB ErrorHandler,45 ; Reserved
Channel_2E: FDB ErrorHandler,46 ; Reserved
Channel_2F: FDB ErrorHandler,47 ; Reserved
Channel_30: FDB ErrorHandler,48 ; XSRAM20K Access Violation
Channel_31: FDB ErrorHandler,49 ; XGATE Software Error Interrupt
Channel_32: FDB ErrorHandler,50 ; XGATE Software Trigger 7
Channel_33: FDB ErrorHandler,51 ; XGATE Software Trigger 6
Channel_34: FDB ErrorHandler,52 ; XGATE Software Trigger 5
Channel_35: FDB ErrorHandler,53 ; XGATE Software Trigger 4
Channel_36: FDB ErrorHandler,54 ; XGATE Software Trigger 3
Channel_37: FDB ErrorHandler,55 ; XGATE Software Trigger 2
Channel_38: FDB ErrorHandler,56 ; XGATE Software Trigger 1
Channel_39: FDB SoftwareTrigger0_Handler, 57 ; XGATE Software Trigger 0
Channel_3A: FDB PIT3_VEC_Handler,58 ; Periodic Interrupt Timer 3
Channel_3B: FDB PIT2_VEC_Handler,59 ; Periodic Interrupt Timer 2
Channel_3C: FDB PIT1_VEC_Handler,60 ; Periodic Interrupt Timer 1
Channel_3D: FDB PIT0_VEC_Handler,61 ; Periodic Interrupt Timer 0
Channel_3E: FDB ErrorHandler,62 ; Reserved
Channel_3F: FDB ErrorHandler,63 ; Autonomous Periodical interrupt API
Channel_40: FDB ErrorHandler,64 ; Low Voltage interrupt LVI
Channel_41: FDB ErrorHandler,65 ; IIC1 Bus
Channel_42: FDB ErrorHandler,66 ; SCI5
Channel_43: FDB ErrorHandler,67 ; SCI4
Channel_44: FDB ErrorHandler,68 ; SCI3
Channel_45: FDB ErrorHandler,69 ; SCI2
Channel_46: FDB ErrorHandler,60 ; PWM Emergency Shutdown
Channel_47: FDB ErrorHandler,71 ; Port P Interrupt
Channel_48: FDB ErrorHandler,72 ; CAN4 transmit
Channel_49: FDB ErrorHandler,73 ; CAN4 receive
Channel_4A: FDB ErrorHandler,74 ; CAN4 errors
Channel_4B: FDB ErrorHandler,75 ; CAN4 wake-up
Channel_4C: FDB ErrorHandler,76 ; CAN3 transmit
Channel_4D: FDB ErrorHandler,77 ; CAN3 receive
Channel_4E: FDB ErrorHandler,78 ; CAN3 errors
Channel_4F: FDB ErrorHandler,79 ; CAN3 wake-up
Channel_50: FDB ErrorHandler,80 ; CAN2 transmit
Channel_51: FDB ErrorHandler,81 ; CAN2 receive
Channel_52: FDB ErrorHandler,82 ; CAN2 errors
Channel_53: FDB ErrorHandler,83 ; CAN2 wake-up
Channel_54: FDB ErrorHandler,84 ; CAN1 transmit
Channel_55: FDB ErrorHandler,85 ; CAN1 receive
Channel_56: FDB ErrorHandler,86 ; CAN1 errors
Channel_57: FDB ErrorHandler,87 ; CAN1 wake-up
Channel_58: FDB ErrorHandler,88 ; CAN0 transmit
Channel_59: FDB ErrorHandler,89 ; CAN0 receive
Channel_5A: FDB ErrorHandler,90 ; CAN0 errors
Channel_5B: FDB ErrorHandler,91 ; CAN0 wake-up
Channel_5C: FDB ErrorHandler,92 ; FLASH
Channel_5D: FDB ErrorHandler,93 ; EEPROM
Channel_5E: FDB ErrorHandler,94 ; SPI2
Channel_5F: FDB ErrorHandler,95 ; SPI1
Channel_60: FDB ErrorHandler,96 ; IIC0 Bus
Channel_61: FDB ErrorHandler,97 ; Reserved
Channel_62: FDB ErrorHandler,98 ; CRG Self Clock Mode
Channel_63: FDB ErrorHandler,99 ; CRG PLL lock
Channel_64: FDB PBOF_VEC_Handler,100 ; Pulse Accumulator B Overflow
Channel_65: FDB ErrorHandler,101 ; Modulus Down Counter underflow
Channel_66: FDB ErrorHandler,102 ; Port H
Channel_67: FDB ErrorHandler,103 ; Port J
Channel_68: FDB AD1_VEC_Handler, 104 ; ATD1
Channel_69: FDB AD0_VEC_Handler, 105 ; ATD0
Channel_6A: FDB ErrorHandler,106 ; SCI1
Channel_6B: FDB SCI0_VEC_Handler,107 ; SCI0
Channel_6C: FDB ErrorHandler,108 ; SPI0
Channel_6D: FDB ErrorHandler,109 ; Pulse accumulator input edge
Channel_6E: FDB PAOF_VEC_Handler,110 ; Pulse accumulator A overflow
Channel_6F: FDB ECTOF_VEC_Handler,111 ; Enhanced Capture Timer overflow
Channel_70: FDB ECTCH7_VEC_Handler,112 ; Enhanced Capture Timer channel 7
Channel_71: FDB ECTCH6_VEC_Handler,113 ; Enhanced Capture Timer channel 6
Channel_72: FDB ECTCH5_VEC_Handler,114 ; Enhanced Capture Timer channel 5
Channel_73: FDB ECTCH4_VEC_Handler,115 ; Enhanced Capture Timer channel 4
Channel_74: FDB ECTCH3_VEC_Handler,116 ; Enhanced Capture Timer channel 3
Channel_75: FDB ECTCH2_VEC_Handler,117 ; Enhanced Capture Timer channel 2
Channel_76: FDB ECTCH1_VEC_Handler,118 ; Enhanced Capture Timer channel 1
Channel_77: FDB ECTCH0_VEC_Handler,119 ; Enhanced Capture Timer channel 0
Channel_78: FDB ErrorHandler,120 ; Real Time Interrupt
Channel_79: FDB ErrorHandler,121 ; Reserved
Channel_7A: FDB ErrorHandler,122 ; Reserved
Channel_7B: FDB ErrorHandler,123 ; Reserved
Channel_7C: FDB ErrorHandler,124 ; Reserved
Channel_7D: FDB ErrorHandler,125 ; Reserved
Channel_7E: FDB ErrorHandler,126 ; Reserved
Channel_7F: FDB ErrorHandler,127 ; Reserved

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