My ADuC7126 eval board was working fine and all of sudden I got the following error:
***JLink Error: ADI system TAP: Could not read CPU core Id.
I did what you suggested and set my debug settings to 800KHz, selected reset strategy, debug cache option and trace option on my Keil IDE.
Next, from DOS command, I typed "jlink.exe -device ADuC7126".
After I did these things and tried to run my code via the mIDAS-Link (with v4.74a), I still got the following:
***JLink Error: Bad JTAG communication: Write to IR: Expected 0x1, got 0xF (TAP Command : 15) @ Off 0x5.
My eval board was all working fine until last night when I tried to run this new ADuC7126 project. Do you have any other suggestions on how to recover from this problem? I can send you my project if you needed. Thanks.