If you have a TI emulator, open a DOS prompt in the ti/cc/bin directory and run the program xdsprobe.exe with the -i option. Use 'xdsprobe -hv > xdsprobe.txt' to generate a brief manual on xdsprobe. If you have another brand of emulator, let me know. xdsprobe will verify the integrity of your scan chain - I am not sure if that is your problem.

Can the host download to the "problem DSP" successfully?? If so, you can download a few byte program consistinng of "branch to self + nops" and issue a DSPINT. If you do this successfully, CCS should come up.

BTW, what are the types of the DSP??

mikedunn

mayongfeng00 <m...@bit.edu.cn> wrote:

Hi,everyone!
I am debugging a board with 4 DSPs that are in a JTAG loop. One of
the 4 DSPs is HOST which can access the other 3 slaves through the
HPI. But one of the slaves doesn't work well,ie, can't get into the
CCS if it is in the JTAG loop. Can anyone give me any hints?
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Hi,everyone! I am debugging a board with 4 DSPs that are in a JTAG loop. One of the 4 DSPs is HOST which can access the other 3 slaves through the HPI. But one of the slaves doesn't work well,ie, can't get into the CCS if it is in the JTAG loop. Can anyone give me any hints?