This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

6616 interrupt cann't be effective

My vector table is as follows:I create two ISRs the packetRcvIsr can be effective but packetTxIsr cann't be effective.

And I can make sure the following two things:

1. both the events occur

2. the INTMUX1's value is also right

Do you have some advise to investigate this problem? Or Have you ever met such similar problem?

;create interrupt vector table for C6000 DSP
;--------------------------------------------------------------
;This file can be modified to add Interrupt Service Routine(ISR)
;for an interrupt, the steps are:
;1,reference to the externally defined ISR, for example
; .ref EDMA_ISR
;2,modify the corresponding entry in the interrupt vector table.
;  For example, if interrupt 8 is used for EDMA, then you should
;  modify the entry number 8 like below:
; VEC_ENTRY EDMA_ISR      ;interrupt 8
;--------------------------------------------------------------
;Author: Brighton
;Created on 2011-8-10
;--------------------------------------------------------------

;reference to the externally defined ISR
 .ref _c_int00
 .ref packetRcvIsr
 .ref packetTxIsr
 .global vectors

;--------------------------------------------------------------
;create interrupt vector for reset (interrupt 0)
VEC_RESET .macro addr
 MVKL  addr,B0
 MVKH  addr,B0
 B     B0
 MVC   PCE1,B0
 MVC   B0,ISTP
 NOP   3
 .align 32
 .endm

;create interrupt vector for other used interrupts 
VEC_ENTRY .macro addr
 STW   B0,*--B15
 MVKL  addr,B0
 MVKH  addr,B0
 B     B0
 LDW   *B15++,B0
 NOP   4
 .align 32
 .endm

;create interrupt vector for unused interrupts 
VEC_DUMMY .macro
unused_int?:
 B    unused_int? ;dead loop for unused interrupts
 NOP  5
 .align 32
 .endm

 
;--------------------------------------------------------------
;interrupt vector table 
 .sect "vecs"
 .align 1024
 
vectors:
 VEC_RESET _c_int00       ;RESET
 VEC_DUMMY      ;NMI/Exception
 VEC_DUMMY     ;RSVD
 VEC_DUMMY     ;RSVD
 VEC_ENTRY           packetRcvIsr;interrupt 4
 VEC_ENTRY           packetTxIsr;RSVD
 VEC_DUMMY            ;RSVD
 VEC_DUMMY     ;RSVD
 VEC_DUMMY              ;interrupt 8
 VEC_DUMMY     ;interrupt 9
 VEC_DUMMY     ;interrupt 10
 VEC_DUMMY     ;interrupt 11
 VEC_DUMMY     ;interrupt 12
 VEC_DUMMY     ;interrupt 13
 VEC_DUMMY     ;interrupt 14
 VEC_DUMMY     ;interrupt 15
 
 .end