时间中断

采用的是msp430g2553做信号发生器

错误提示../main.c", line 85: error #20: identifier "TIMERA0_VECTOR" is undefined

1 error detected in the compilation of "../main.c".

中断代码是#pragma vector=TIMERA0_VECTOR

__interrupt void TA_ISR (void)

请问怎么修改