litex/mibuild/platforms/sim.py

44 lines
1021 B
Python

from mibuild.generic_platform import *
from mibuild.sim import SimPlatform
class SimPins(Pins):
def __init__(self, n):
Pins.__init__(self, "s "*n)
_io = [
("sys_clk", 0, SimPins(1)),
("sys_rst", 0, SimPins(1)),
("serial", 0,
Subsignal("source_stb", SimPins(1)),
Subsignal("source_ack", SimPins(1)),
Subsignal("source_data", SimPins(8)),
Subsignal("sink_stb", SimPins(1)),
Subsignal("sink_ack", SimPins(1)),
Subsignal("sink_data", SimPins(8)),
),
("eth_clocks", 0,
Subsignal("none", SimPins(1)),
),
("eth", 0,
Subsignal("source_stb", SimPins(1)),
Subsignal("source_ack", SimPins(1)),
Subsignal("source_data", SimPins(8)),
Subsignal("sink_stb", SimPins(1)),
Subsignal("sink_ack", SimPins(1)),
Subsignal("sink_data", SimPins(8)),
),
]
class Platform(SimPlatform):
is_sim = True
default_clk_name = "sys_clk"
default_clk_period = 1000 # on modern computers simulate at ~ 1MHz
def __init__(self):
SimPlatform.__init__(self, "SIM", _io)
def do_finalize(self, fragment):
pass