You can get something like JTAG from Intel with a NDA. https://designintools.intel.com/Silicon_View_Technology_Closed_Chassis_Adapter_p/itpxdpsvt.htm https://d

You can get something like JTAG from Intel with a NDA. https://designintools.intel.com/Silicon_View_Technology_Closed_Chassis_Adapter_p/itpxdpsvt.htm https://designintools.intel.com/Silicon_View_Technology_Clos... Most of the time you can do kernel dev with a serial port and printf though.