bus/wishbone/Tap: remove ack feature

diff --git a/migen/bus/wishbone.py b/migen/bus/wishbone.py
index 35a8f8a1c9af239e040067867641ce20d4aa0a02..83b27fe326106a50b847b553c35a4638313a9c48 100644 (file)
--- a/migen/bus/wishbone.py
+++ b/migen/bus/wishbone.py
@@ -130,16 +130,8 @@ class InterconnectShared:
                return self._arbiter.get_fragment() + self._decoder.get_fragment()
 
 class Tap:
-       def __init__(self, bus=None, handler=print):
-               # If bus is None, create one and act as a normal slave.
-               # If we pass an existing one, dump the transactions
-               # without interfering with the bus.
-               if bus is None:
-                       self.bus = Interface()
-                       self.ack = True
-               else:
-                       self.bus = bus
-                       self.ack = False
+       def __init__(self, bus, handler=print):
+               self.bus = bus
                self.handler = handler
        
        def do_simulation(self, s):
@@ -155,16 +147,7 @@ class Tap:
                        self.handler(transaction)
        
        def get_fragment(self):
-               if self.ack:
-                       sync = [
-                               self.bus.ack.eq(0),
-                               If(self.bus.cyc & self.bus.stb & ~self.bus.ack,
-                                       self.bus.ack.eq(1)
-                               )
-                       ]
-               else:
-                       sync = []
-               return Fragment(sync=sync, sim=[self.do_simulation])
+               return Fragment(sim=[self.do_simulation])
 
 class Initiator:
        def __init__(self, generator):