MCF51AC128汇编时候出现的问题

7458969 · 发表于 2013-2-14 22:58:25

芯片复位后无法跳到规定的指令段0X410运行，0X04原本是指向复位后PC的值的结果为0，代码如下
//中断向量文件
   .text

/*
* Exception Vector Table
*/
VECTOR_TABLE:
_VECTOR_TABLE:
INITSP:          .long   __SP_INIT                    /* Initial SP           */
INITPC:          .long   _asm_startmeup              /* Initial PC           */
vector002:   .long   asm_exception_handler   /* Access Error           */
vector003:   .long   asm_exception_handler   /* Address Error       */
vector004:   .long   asm_exception_handler   /* Illegal Instruction   */
vector005:   .long   asm_exception_handler   /* Reserved               */
vector006:   .long   asm_exception_handler   /* Reserved               */
vector007:   .long   asm_exception_handler   /* Reserved               */
vector008:   .long   asm_exception_handler   /* Privilege Violation   */
vector009:   .long   asm_exception_handler   /* Trace               */
vector010:   .long   asm_exception_handler   /* Unimplemented A-Line   */
vector011:   .long   asm_exception_handler   /* Unimplemented F-Line   */
vector012:   .long   asm_exception_handler   /* Debug Interrupt       */
vector013:   .long   asm_exception_handler   /* Reserved               */
vector014:   .long   asm_exception_handler   /* Format Error           */
vector015:   .long   asm_exception_handler   /* Unitialized Int.       */
vector016:   .long   asm_exception_handler   /* Reserved               */
vector017:   .long   asm_exception_handler   /* Reserved               */
vector018:   .long   asm_exception_handler   /* Reserved               */
vector019:   .long   asm_exception_handler   /* Reserved               */
vector020:   .long   asm_exception_handler   /* Reserved               */
vector021:   .long   asm_exception_handler   /* Reserved               */
vector022:   .long   asm_exception_handler   /* Reserved               */
vector023:   .long   asm_exception_handler   /* Reserved               */
vector024:   .long   asm_exception_handler   /* Spurious Interrupt   */
vector025:   .long   asm_exception_handler   /* Autovector Level 1   */
vector026:   .long   asm_exception_handler   /* Autovector Level 2   */
vector027:   .long   asm_exception_handler   /* Autovector Level 3   */
vector028:   .long   asm_exception_handler   /* Autovector Level 4   */
vector029:   .long   asm_exception_handler   /* Autovector Level 5   */
vector030:   .long   asm_exception_handler   /* Autovector Level 6   */
vector031:   .long   asm_exception_handler   /* Autovector Level 7   */
vector032:   .long   asm_exception_handler   /* TRAP #0               */
vector033:   .long   asm_exception_handler   /* TRAP #1               */
vector034:   .long   asm_exception_handler   /* TRAP #2               */
vector035:   .long   asm_exception_handler   /* TRAP #3               */
vector036:   .long   asm_exception_handler   /* TRAP #4               */
vector037:   .long   asm_exception_handler   /* TRAP #5               */
vector038:   .long   asm_exception_handler   /* TRAP #6               */
vector039:   .long   asm_exception_handler   /* TRAP #7               */
vector040:   .long   asm_exception_handler   /* TRAP #8               */
vector041:   .long   asm_exception_handler   /* TRAP #9               */
vector042:   .long   asm_exception_handler   /* TRAP #10               */
vector043:   .long   asm_exception_handler   /* TRAP #11               */
vector044:   .long   asm_exception_handler   /* TRAP #12               */
vector045:   .long   asm_exception_handler   /* TRAP #13               */
vector046:   .long   asm_exception_handler   /* TRAP #14               */
vector047:   .long   asm_exception_handler   /* TRAP #15               */
vector048:   .long   asm_exception_handler   /* Reserved               */
vector049:   .long   asm_exception_handler   /* Reserved               */
vector050:   .long   asm_exception_handler   /* Reserved               */
vector051:   .long   asm_exception_handler   /* Reserved               */
vector052:   .long   asm_exception_handler   /* Reserved               */
vector053:   .long   asm_exception_handler   /* Reserved               */
vector054:   .long   asm_exception_handler   /* Reserved               */
vector055:   .long   asm_exception_handler   /* Reserved               */
vector056:   .long   asm_exception_handler   /* Reserved               */
vector057:   .long   asm_exception_handler   /* Reserved               */
vector058:   .long   asm_exception_handler   /* Reserved               */
vector059:   .long   asm_exception_handler   /* Reserved               */
vector060:   .long   asm_exception_handler   /* Reserved               */
vector061:   .long   asm_exception_handler   /* Reserved               */
vector062:   .long   asm_exception_handler   /* Reserved               */
vector063:   .long   asm_exception_handler   /* Reserved               */
vector064:   .long   asm_exception_handler   /* IRQ_Pin               */
vector065:   .long   asm_exception_handler   /* Low_Voltage       */
vector066:   .long   asm_tpm1_ch0_handler   /* TPM1_ch0         */
vector067:   .long   asm_exception_handler   /* TPM1_ch1         */
vector068:   .long   asm_exception_handler   /* TPM1_ch2         */
vector069:   .long   asm_exception_handler   /* TPM1_ovfl         */
vector070:   .long   asm_exception_handler   /* TPM2_ch0         */
vector071:   .long   asm_exception_handler   /* TPM2_ch1         */
vector072:   .long   asm_exception_handler   /* TPM2_ch2         */
vector073:   .long   asm_exception_handler   /* TPM2_ovfl         */
vector074:   .long   asm_exception_handler   /* SPI2              */
vector075:   .long   asm_exception_handler   /* SPI1              */
vector076:   .long   asm_exception_handler   /* SCI1_err           */
vector077:   .long   asm_exception_handler   /* SCI1_rx            */
vector078:   .long   asm_exception_handler   /* SCI1_tx           */
vector079:   .long   asm_exception_handler   /* IICx              */
vector080:   .long   asm_exception_handler   /* KBIx              */
vector081:   .long   asm_exception_handler   /* ADC               */
vector082:   .long   asm_exception_handler   /* ACMPx              */
vector083:   .long   asm_exception_handler   /* SCI2_err           */
vector084:   .long   asm_exception_handler   /* SCI2_rx            */
vector085:   .long   asm_exception_handler   /* SCI2_tx            */
vector086:   .long   asm_exception_handler   /* RTC               */
vector087:   .long   asm_exception_handler /* TPM3_ch0         */
vector088:   .long   asm_exception_handler /* TPM3_ch1         */
vector089:   .long   asm_exception_handler /* TPM3_ch2         */
vector090:   .long   asm_exception_handler /* TPM3_ch3         */
vector091:   .long   asm_exception_handler /* TPM3_ch4         */
vector092:   .long   asm_exception_handler /* TPM3_ch5         */
vector093:   .long   asm_exception_handler /* TPM3_ovrfl         */
vector094:   .long   asm_exception_handler /* Reserved         */
vector095:   .long   asm_exception_handler /* Reserved         */
vector096:   .long   asm_exception_handler /* Level 7 SWI        */
vector097:   .long   asm_exception_handler /* Level 6 SWI        */
vector098:   .long   asm_exception_handler /* Level 5 SWI        */
vector099:   .long   asm_exception_handler /* Level 4 SWI        */
vector100:   .long   asm_exception_handler /* Level 3 SWI        */
vector101:   .long   asm_exception_handler /* Level 2 SWI        */
vector102:   .long   asm_exception_handler /* Level 1 SWI        */


   .end
//主程序masm.asm

.extern   ___SP_INIT
.global _asm_function
.global _main
.global _Init_Timer
.global _wait
.global _asm_startmeup
.include "derivative.inc"

    .text
    .function "_asm_startmeup",_asm_startmeup,_asm_startmeup_end-_asm_startmeup

_asm_startmeup:
/* disable interrupts */
move.w        #0x2700,SR

/* setup the stack pointer */
lea           ___SP_INIT,A7

/* setup A6 dummy stackframe */
movea.l       #0,A6
link          A6,#0

_main:
       bsr.l    _Init_Timer

       clr.l    D4             /* Initialize timeouts (0=off) */
       clr.l    D5
       clr.l    D6

       move.b   #$03,D0
       move.b   D0,SOPT1

       move.b   #$F,D4         /* Schedule a timeout1 event ~ 160ms @ 4MHz Bus Frequency */
       move.b   #$FF,D0
       move.b   D0,PTFDD       /* Set DEMOQE led ports as outputs */
       move.b   #$0,D0
       move.b   D0,PTFD
       move.b   #$C0,D0
       move.b   D0,PTEDD

       move.b   #$20,D0
       move.b   D0,PTBD
       move.b   #$3F,D0
       move.b   D0,PTCD
       move.b   #$C0,D0
       move.b   D0,PTED

/* enable interrupts */
       move     SR,D0
       andi.l   #0xF8FF,D0
       move     D0,SR

_wait:

bra _wait

/*************************************************************
* Init_Timer - Turns on timer 1 channel 0 for an Output      *
*              Compare in approximately 10ms. The timer      *
*              interrupt service routine continually sets    *
*              the next interrupt to occur 10ms later.       *
**************************************************************/

_Init_Timer:
       move.b   #$06,D0
       move.b   D0,TPM1SC      /* Timer 1 - Cleared + Stopped.
                                  Clicks once every 64 BUS Cycles
                                        Bus Clock Selected */

       move.b   #$54,D0
       move.b   D0,TPM1C0SC    /* Timer 1 Channel 0
                                  Set for Output Compare operation. */

       move.b   #$02,D0
       move.b   D0,TPM1C0VH    /* Set Output Compare to happen 622T clicks ($26e) */
       move.b   #$6e,D0
       move.b   D0,TPM1C0VL    /* after we start the timer. (~10ms). The
                                  timer interrupt will set OC for another ~10ms. */

       move.b   #$0E,D0
       move.b   D0,TPM1SC      /* Start the timer */
       rts

_asm_startmeup_end:

    .end

/* This source is (C)opyright 2003, P&E Microcomputer Systems, Inc.
   Visit us at http://www.pemicro.com */

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