+
+ def request(self, name, number=0, *, dir=None, xdr=None):
+ # okaaaay, bit of shenanigens going on: the important data structure
+ # here is Resourcemanager._ports. requests add to _ports, which is
+ # what needs redirecting. therefore what has to happen is to
+ # capture the number of ports *before* the request. sigh.
+ start_ports = len(self._ports)
+ value = super().request(name, number, dir=dir, xdr=xdr)
+ end_ports = len(self._ports)
+
+ # now make a corresponding (duplicate) request to the pad manager
+ # BUT, if it doesn't exist, don't sweat it
+ pad_start_ports = len(self.pad_mgr._ports)
+ try:
+ pvalue = self.pad_mgr.request(name, number, dir=dir, xdr=xdr)
+ except AssertionError:
+ return value
+ pad_end_ports = len(self.pad_mgr._ports)
+
+ # ok now we have the lengths: now create a lookup between the pad
+ # and the core, so that JTAG boundary scan can be inserted in between
+ core = self._ports[start_ports:end_ports]
+ pads = self.pad_mgr._ports[pad_start_ports:pad_end_ports]
+ # oops if not the same numbers added. it's a duplicate. shouldn't happen
+ assert len(core) == len(pads), "argh, resource manager error"