C6713二级引导完成后跳转到_c_int00死机问题

为什么reset中断里不直接放_c_int00跳转指令？

中断向量0就是reset中断啊..下面是代码

;*------------------------------------------------------------------------------
;* This is a macro that instantiates one entry in the interrupt service table.
;*------------------------------------------------------------------------------
VEC_ENTRY .macro addr
STW B0,*--B15
MVKL addr,B0
MVKH addr,B0
B B0
LDW *B15++,B0
NOP 2
NOP
NOP
.endm

;*------------------------------------------------------------------------------
;* This is a dummy interrupt service routine used to initialize the IST.
;*------------------------------------------------------------------------------
_vec_dummy:
B B3
NOP 5

;*------------------------------------------------------------------------------
;* This is the actual interrupt service table (IST). It is properly aligned and
;* is located in the subsection .text:vecs. This means if you don't explicitly
;* specify this section in your linker command file, it will default and link
;* into the .text section. Remember to set the ISTP register to point to this
;* table.
;*------------------------------------------------------------------------------
.sect ".vct" ; .sect ".text:vecs" ;
.align 1024

_vectors:
_vector0: VEC_ENTRY _c_int00 ;_start;_c_int00; RESET
_vector1: VEC_ENTRY _vec_dummy ;NMI
_vector2: VEC_ENTRY _vec_dummy ;RSVD
_vector3: VEC_ENTRY _vec_dummy