我在调试68332的TPU模块时，程序不能进入中断程序段，调试环境SDS7.0,麻烦哪位大哥抽空帮我看一看，谢谢！

/*程序功能是当TP9产生中断后将88写入D3寄存器，在singlestep下编译调试*/
TPUMCR EQU $fffe00
TICR EQU $fffe08
CIER EQU $fffe0a
CFSR0 EQU $fffe0c
CFSR1 EQU $fffe0e
CFSR2 EQU $fffe10
CFSR3 EQU $fffe12
HSQR0 EQU $fffe14
HSQR1 EQU $fffe16
HSRR0 EQU $fffe18
HSRR1 EQU $fffe1a
CPR0 EQU $fffe1c
CPR1 EQU $fffe1e
CISR EQU $fffe20
* Channel 0 parameters
PRAM0_0 EQU $ffff00
PRAM0_1 EQU $ffff02
PRAM0_2 EQU $ffff04
PRAM0_3 EQU $ffff06
PRAM0_4 EQU $ffff08
PRAM0_5 EQU $ffff0a
* Channel 2 parameters
PRAM2_0 EQU $ffff20
PRAM2_1 EQU $ffff22
PRAM2_2 EQU $ffff24
PRAM2_3 EQU $ffff26
PRAM2_4 EQU $ffff28
PRAM2_5 EQU $ffff2a
* Channel 5 parameters
PRAM5_0 EQU $ffff50
PRAM5_1 EQU $ffff52
PRAM5_2 EQU $ffff54
PRAM5_3 EQU $ffff56
PRAM5_4 EQU $ffff58
PRAM5_5 EQU $ffff5a
* Channel 7 parameters
PRAM7_0 EQU $ffff70
PRAM7_1 EQU $ffff72
PRAM7_2 EQU $ffff74
PRAM7_3 EQU $ffff76
PRAM7_4 EQU $ffff78
PRAM7_5 EQU $ffff7a
* Channel 9 parameters
PRAM9_0 EQU $ffff90
PRAM9_1 EQU $ffff92
PRAM9_2 EQU $ffff94
PRAM9_3 EQU $ffff96
PRAM9_4 EQU $ffff98
PRAM9_5 EQU $ffff9a

* Channel 1 parameters
PRAM1_0 EQU $ffff10
PRAM1_1 EQU $ffff12
PRAM1_2 EQU $ffff14
PRAM1_3 EQU $ffff16
PRAM1_4 EQU $ffff18
PRAM1_5 EQU $ffff1a
* Channel 3 Parameters
PRAM3_0 EQU $ffff30
PRAM3_1 EQU $ffff32
PRAM3_2 EQU $ffff34
PRAM3_3 EQU $ffff36
PRAM3_4 EQU $ffff38
PRAM3_5 EQU $ ffff3a

* Channel 4 parameters
PRAM4_0 EQU $ffff40
PRAM4_1 EQU $ffff42
PRAM4_2 EQU $ffff44
PRAM4_3 EQU $ffff46
PRAM4_4 EQU $ffff48
PRAM4_5 EQU $ffff4a
* Channel 6 parameters
PRAM6_0 EQU $ffff60
PRAM6_1 EQU $ffff62
PRAM6_2 EQU $ffff64
PRAM6_3 EQU $ffff66
PRAM6_4 EQU $ffff68
PRAM6_5 EQU $ffff6a
* Channel 11 parameters
PRAM11_0 EQU $ffffb0
PRAM11_1 EQU $ffffb2
PRAM11_2 EQU $ffffb4
PRAM11_3 EQU $ffffb6
PRAM11_4 EQU $ffffb8
PRAM11_5 EQU $ffffba
* Channel 13 parameters
PRAM13_0 EQU $ffffd0
PRAM13_1 EQU $ffffd2
PRAM13_2 EQU $ffffd4
PRAM13_3 EQU $ffffd6
PRAM13_4 EQU $ffffd8
PRAM13_5 EQU $ffffda
* Channel 15 parameters
PRAM15_0 EQU $ffffF0
PRAM15_1 EQU $ffffF2
PRAM15_2 EQU $ffffF4
PRAM15_3 EQU $ffffF6
PRAM15_4 EQU $ffffF8
PRAM15_5 EQU $ffffFa
XDEF START
XREF STKTOP
section code
START:
MOVE.W #$a0a0，(CFSR0).l
MOVE.W #$a0a0，(CFSR1).l
MOVE.W #$a9a9，(CFSR2).l
MOVE.W #$0909，(CFSR3).l
MOVE.W #$4444，(HSQR0).l
MOVE.W #$4400，(HSQR1).l
TP9/Z1 MOVE.W #$0007，(PRAM9_0).l
MOVE.W #$000e，(PRAM9_1).l
MOVE.W #$0001，(PRAM9_2).l
ANDI.W #$555F，(CIER).l
MOVE.W (CISR).l，d0
ANDI.W #$555F，(CISR).l
ORI.W #$0005，(TPUMCR).l
MOVE.W #$0680，(TICR).l
ANDI.W #$f5ff，SR
MOVE.W #$ff3f，(CPR0).l
MOVE.W #$f3ff，(CPR1).l
MOVE.W #$4444，(HSRR0).l
MOVE.W #$6622，(HSRR1).l
ORI.W #$8200，(CIER).l
FINISH: BRA FINISH

INT:
ANDI.W #$555F，(CIER).l
MOVE.W (CISR).l，d0
ANDI.W #$555F，(CISR).l
MOVE.W #$88，D3
RTE
section reset
DC.L STKTOP
DC.L START
section vects
DS.L 135
DC.L INT
END

link文件：

partition{ overlay{
region {} reset[addr=0x0]; /* reset vector */
region {} vects[addr=0x8]; /* other vectors */
region {} code[addr=0x400]; /* executable code */
region {} init; /* pointers to C++ init thunks */
region {} exit; /* pointers to C++ exit thunks */
region {} const; /* constant data */
region {} string; /* constant string */
DATA = $; /* where to download region data */
} o1; }ROM[addr=0x100000];
partition{ overlay{
region {} data[roundsize = 4]; /* RAM to be initalized on reset */
region {} ram[roundsize = 4]; /* RAM to be zeroed on reset */
region {} malloc[size = 0x1000]; /* RAM available to malloc() */
region {} stack[size = 0x1000]; /* stack of at least 0x1000 bytes */
STKTOP = $; /* stack pointer reset value */
} o2; }RAM[addr=0x160000];