Hi Mayu, I assumed you had able to bring up the 5510 through emulator. Now as for ur host processor & DSP interfcae through HPI. take care of the following steps 1> Make sure ur cmd file startup the boot code from 0x10000h( byte address) while loading the code through CCS. 2> The 5510 should up & running through emulator only first. 3> All the EHPI interface software configuration wriiten in the host code should be properly executed. Then u will be able to see & write data from the host to the DSP. I guess u r using 5510 silicon verion 2.0 or above. Regards Gagan --- mayu <> wrote: > Hello everyone, > I use Hpi port to boot DSP5510 and exchange data > between host and 5510. It works OK. > However, when I connected DSP with emulator through > JTAG port and start CCS2.1 without running any > programe, the host failed to write and read DSP > through HPI port. > But at the same condition the Host can boot DSP5409 > and write/read its memroy correctly. > Can anyone gave me a clue? > Thanks in advance. > mayu > __________________________________ |