diff options
| -rwxr-xr-x | icebox/icebox_vlog.py | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/icebox/icebox_vlog.py b/icebox/icebox_vlog.py index 5736011..a86f11e 100755 --- a/icebox/icebox_vlog.py +++ b/icebox/icebox_vlog.py @@ -350,6 +350,7 @@ for segs in sorted(ic.group_segments(extra_connections=extra_connections, extra_ if re.match(r"ram/RDATA_", s[2]): count_drivers += 1 if re.match(r"io_./D_IN_", s[2]): count_drivers += 1 if re.match(r"lutff_./out", s[2]): count_drivers += 1 + if re.match(r"lutff_./lout", s[2]): count_drivers += 1 if count_drivers != 1 and check_driver: failed_drivers_check.append(n) @@ -851,11 +852,11 @@ for lut in luts_queue: l_expr = make_lut_expr(bits[0:len(bits)//2], sigs[1:]) h_expr = make_lut_expr(bits[len(bits)//2:len(bits)], sigs[1:]) if h_expr == l_expr: return h_expr - if sigs[0] == "0": return l_expr - if sigs[0] == "1": return h_expr - if h_expr == "1" and l_expr == "0": return sigs[0] - if h_expr == "0" and l_expr == "1": return "!" + sigs[0] - return "%s ? %s : %s" % (sigs[0], h_expr, l_expr) + if sigs[0] == "1'b0": return l_expr + if sigs[0] == "1'b1": return h_expr + if h_expr == "1'b1" and l_expr == "1'b0": return sigs[0] + if h_expr == "1'b0" and l_expr == "1'b1": return "!" + sigs[0] + return "(%s ? %s : %s)" % (sigs[0], h_expr, l_expr) lut_expr = make_lut_expr(lut_bits, [net_in3, net_in2, net_in1, net_in0]) lut_assigns.append([net_lout, "/* LUT %2d %2d %2d */ %s" % (lut[0], lut[1], lut[2], lut_expr)]) max_net_len = max(max_net_len, len(net_lout)) |