+JTAG TAP capability on UART TX and RX has now been inserted into
+the chain. Using openocd or other program it is possible to
+send TDI, TMS, TDO and TCK signals according to IEEE 1149.1 in order
+to intercept both the core and IO Pads, both input and output,
+and confirm the correct functionality of one even if the other is
+broken, during ASIC testing.
+
+Libre-SOC's JTAG TAP Boundary Scan system is a little more sophisticated:
+it hooks into (replaces) ResourceManager.request(), intercepting the request
+and recording what was requested. The above manual linkup to JTAG TAP
+is then taken care of **automatically and transparently**, but to
+all intents and purposes looking exactly like a Platform even to
+the extent of taking the exact same list of Resources.