各位:
我在NiosII SDK Shell里执行 nr mytimer.srec时出现了以下情况
[SOPC Builder]$ nr mytimer.srec
nios-run: Ready to download mytimer.srec over COM1: at 115200 bps
: Press CPU Reset (or CLEAR) on target board to begin download
: Type Control-C to exit the program
: Waiting for target....................................................
................................................................................
................................................................................
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之前我执行 nr -t -r 时,出现
[SOPC Builder]$ nr -t -r
nios-run: Entering terminal mode over COM1: at 115200 bps
nios-run: Terminal mode (Control-C exits)
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不知道哪里出了问题,望大家指点,先谢了 | 
