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#!/usr/bin/env python3
from fuzzconfig import *
import numpy as np
import os
from numpy.random import randint, choice, permutation
num_xor = 8
num_luts = 8
num_outputs_range = (5, 20)
device_class = os.getenv("ICEDEVICE")
working_dir = "work_%s_iopack" % (device_class, )
os.system("rm -rf " + working_dir)
os.mkdir(working_dir)
def get_pin_directions():
pindirs = ["i" for i in range(len(pins))]
for i in range(randint(num_outputs_range[0], num_outputs_range[1])):
pindirs[randint(len(pins))] = "o"
return pindirs
def get_nearby_inputs(p, n, r):
while True:
ipins = list()
for i in range(-r, +r):
ip = (p + i + len(pins)) % len(pins)
if pindirs[ip] == "i":
ipins.append(ip)
if len(ipins) >= n:
break
r += 4
return [choice(ipins) for i in range(n)]
for idx in range(num):
with open(working_dir + "/iopack_%02d.v" % idx, "w") as f:
pindirs = get_pin_directions()
print("module top(%s);" % ", ".join(["%sput p%d" % ("in" if pindirs[i] == "i" else "out", i) for i in range(len(pins))]), file=f)
for outp in range(len(pins)):
if pindirs[outp] == "o":
xor_nets = set(["%sp%d" % (choice(["~", ""]), p) for p in get_nearby_inputs(outp, num_xor, 2 + randint(10))])
for i in range(num_luts):
print(" localparam [15:0] p%d_lut%d = 16'd %d;" % (outp, i, randint(2**16)), file=f)
print(" wire p%d_in%d = p%d_lut%d >> {%s};" % (outp, i, outp, i,
", ".join(["p%d" % p for p in get_nearby_inputs(outp + randint(-10, +11), 4, 4)])), file=f)
xor_nets.add("%sp%d_in%d" % (choice(["~", ""]), outp, i))
print(" assign p%d = ^{%s};" % (outp, ", ".join(sorted(xor_nets))), file=f)
print("endmodule", file=f)
with open(working_dir + "/iopack_%02d.pcf" % idx, "w") as f:
for i in range(len(pins)):
print("set_io p%d %s" % (i, pins[i]), file=f)
output_makefile(working_dir, "iopack")
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