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| author | gatecat <gatecat@ds0.me> | 2021-05-13 20:25:55 +0100 |
|---|---|---|
| committer | gatecat <gatecat@ds0.me> | 2021-05-15 14:54:33 +0100 |
| commit | 09a867310b8c3c51e62f394a9acfda217e7addc5 (patch) | |
| tree | 43f7d1579afa93a2a8ac307d586cc63bfac4585c /mistral/bitstream.cc | |
| parent | 3d1bb4f1b217b020e750277dd1ee2e4d3516b58f (diff) | |
| download | nextpnr-09a867310b8c3c51e62f394a9acfda217e7addc5.tar.gz nextpnr-09a867310b8c3c51e62f394a9acfda217e7addc5.tar.bz2 nextpnr-09a867310b8c3c51e62f394a9acfda217e7addc5.zip | |
mistral: Carry fixes
Signed-off-by: gatecat <gatecat@ds0.me>
Diffstat (limited to 'mistral/bitstream.cc')
| -rw-r--r-- | mistral/bitstream.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mistral/bitstream.cc b/mistral/bitstream.cc index a9eaeff2..58154d7c 100644 --- a/mistral/bitstream.cc +++ b/mistral/bitstream.cc @@ -226,7 +226,8 @@ struct MistralBitgen bool is_carry = (luts[0] && luts[0]->combInfo.is_carry) || (luts[1] && luts[1]->combInfo.is_carry); if (is_carry) cv->bmux_m_set(CycloneV::LAB, pos, CycloneV::ARITH_SEL, alm, CycloneV::ADDER); - if (is_carry && alm == 0 && luts[0]->combInfo.carry_start) + // The carry in/out enable bits + if (is_carry && alm == 0 && !luts[0]->combInfo.carry_start) cv->bmux_b_set(CycloneV::LAB, pos, CycloneV::TTO_DIS, alm, true); } |