diff options
| author | Tim 'mithro' Ansell <me@mith.ro> | 2018-06-11 13:45:06 -0700 |
|---|---|---|
| committer | Tim 'mithro' Ansell <me@mith.ro> | 2018-06-11 13:46:52 -0700 |
| commit | f9c1f2e5b2721e4abf2f13f52bbc1395b6e7b1f7 (patch) | |
| tree | 877945326d3c79908e3bb09d9c43d7f294086db3 | |
| parent | 92751d505af0e2843694a1b59c89bb8896546aba (diff) | |
| download | icestorm-f9c1f2e5b2721e4abf2f13f52bbc1395b6e7b1f7.tar.gz icestorm-f9c1f2e5b2721e4abf2f13f52bbc1395b6e7b1f7.tar.bz2 icestorm-f9c1f2e5b2721e4abf2f13f52bbc1395b6e7b1f7.zip | |
icebox: Fix LUT output code.
sig values where "1'b0" and "1'b1" not "0" or "1".
| -rwxr-xr-x | icebox/icebox_vlog.py | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/icebox/icebox_vlog.py b/icebox/icebox_vlog.py index 5736011..59f1b6c 100755 --- a/icebox/icebox_vlog.py +++ b/icebox/icebox_vlog.py @@ -851,11 +851,11 @@ 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)) |