04/16/2008 - Copyright © 2008 The PTR Group Inc.
Hardware debuggers such as JTAG are invaluable for exercising new hardware
They let us test address lines and registers
Once we can configure the board via the JTAG, we then take that info and use it to port the boot firmware
We can usually burn the boot firmware into flash via the JTAG as well
Once the boot firmware is loading Linux, the JTAG can then help again in early kernel debugging and device driver debugging
Don’t start your next bring-up project without one!