关于Cache打开的问题，请大神帮我看看是什么原因？

你好，
请问在你打开L2 cache的时候，是否也配置了MAR寄存器把需要cache的DDR区域配置为可以cache了？从你的实验结果来看，你使用的数据段没有被cache。

你好，非常感谢你的回复，的确忘记了MAR寄存器的配置，cache已经打开。请问
undefined first referenced
symbol in file
--------- ----------------
_timer_isr D:\CCS_install\MyProjects\3.1.2 hello\vecs.obj这是什么问题？

你好，
就错误信息来看，编译的时候没有找到_timer_isr，你确认_timer_isr 的确在你代码/库里面？

这是vecs.asm文件，我将其添加到工程中了
*------------------------------------------------------------------------------
* Global symbols defined here and exported out of this file
*------------------------------------------------------------------------------
.global _vectors
.global _c_int00
.global _vector1
.global _vector2
.global _vector3
.global _vector4
.global _vector5
.global _vector6
.global _vector7
.global _vector8 ; Hookup the c_int08 ISR in main()
.global _vector9
.global _vector10
.global _vector11
.global _vector12
.global _vector13
.global _timer_isr
.global _vector15
*------------------------------------------------------------------------------
* Global symbols referenced in this file but defined somewhere else.
* Remember that your interrupt service routines need to be referenced here.
*------------------------------------------------------------------------------
.ref _c_int00
.ref _timer_isr
*------------------------------------------------------------------------------
* 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 ".vectors"
.align 1024
_vectors:
_vector0: VEC_ENTRY _c_int00 ;RESET
_vector1: VEC_ENTRY _vec_dummy ;NMI
_vector2: VEC_ENTRY _vec_dummy ;RSVD
_vector3: VEC_ENTRY _vec_dummy
_vector4: VEC_ENTRY _vec_dummy
_vector5: VEC_ENTRY _vec_dummy
_vector6: VEC_ENTRY _vec_dummy
_vector7: VEC_ENTRY _vec_dummy
_vector8: VEC_ENTRY _vec_dummy ; Hookup the c_int08 ISR in main()
_vector9: VEC_ENTRY _vec_dummy
_vector10: VEC_ENTRY _vec_dummy
_vector11: VEC_ENTRY _vec_dummy
_vector12: VEC_ENTRY _vec_dummy
_vector13: VEC_ENTRY _vec_dummy
_vector14: VEC_ENTRY _timer_isr
_vector15: VEC_ENTRY _vec_dummy