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补充一下，DSP里边的非外设中断用什么来触发？比如USER11和USER12
不知道主题里的语句是哪里看到的？或者是谁写的？
对于你提到的USER11/12类似的中断，请参考System Control User Guide说明：
When the PIE is enabled, a TRAP #1 through TRAP #12 or an INTR INT1 to INTR INT12 instruction
transfers program control to the interrupt service routine corresponding to the first vector within the PIE
group. For example: TRAP #1 fetches the vector from INT1.1, TRAP #2 fetches the vector from INT2.1
and so forth. Similarly an OR IFR, #16-bit operation causes the vector to be fetched from INTR1.1 to
INTR12.1 locations, if the respective interrupt flag is set. All other TRAP, INTR, OR IFR,#16-bit operations
fetch the vector from the respective table location. The vector table is EALLOW protected.
我再补充一下啊，#define OS_TASK_SW() asm(" TRAP #31")
也就是说这个语句是用来做DSP操作系统的任务切换的，我怀怀疑asm(" TRAP #31")这个语句是用来触发用户中断，PieVectTable.USER12 = &OSCtxSw; //User-Defined Trap, Non-Peripheral Interrupts我在初始化时程序里边是开的这个中断
除了10#说的，您还可以看一下 CPU and Instruction Set Reference Guide。里面有说TRAP的作用，TRAP #31可以触发USER12中断。
