def muxed_block_gens(mux_out, reset, clock):
mux_sel, bg0_en, bg1_en = [Signal(bool(0)) for i in range(3)]
bg0_out, bg1_out = [Signal(intbv(0)[2:]) for i in range(2)]
bg0 = block_gen(bg0_out, bg0_en, clock, reset, n=4)
bg1 = block_gen(bg1_out, bg1_en, clock, reset, n=4)
my_mux = mux(mux_out, bg0_out, bg1_out, mux_sel)
return bg0, bg1, my_mux
def tb_block_gen():
count, enable, clock = [Signal(intbv(0)) for i in range(3)]
reset = ResetSignal(0, active=ACTIVE_LOW, async=True)
bg = block_gen(count, enable, clock, reset, n=4)
HALF_PERIOD = delay(10)
@always(HALF_PERIOD)
def clockGen():
clock.next = not clock
@instance
def stimulus():
reset.next = ACTIVE_LOW
yield clock.negedge
reset.next = INACTIVE_HIGH
for i in range(12):
enable.next = min(1, randrange(3))
yield clock.negedge
raise StopSimulation
@instance
def monitor():
print "enable count"
yield reset.posedge
while 1:
yield clock.posedge
yield delay(1)
print " %s %s" % (enable, count)
return clockGen, stimulus, bg, monitor
