diff options
Diffstat (limited to 'generic/viaduct/fabulous/fabulous.cc')
| -rw-r--r-- | generic/viaduct/fabulous/fabulous.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/generic/viaduct/fabulous/fabulous.cc b/generic/viaduct/fabulous/fabulous.cc index d658ce24..00c8909b 100644 --- a/generic/viaduct/fabulous/fabulous.cc +++ b/generic/viaduct/fabulous/fabulous.cc @@ -102,7 +102,9 @@ struct FabulousImpl : ViaductAPI if (ci->type == id_FABULOUS_LC) { auto &lct = cell_tags.get(ci); if (lct.comb.carry_used) { - ctx->addCellTimingDelay(ci->name, id_Ci, id_Co, 1.0); + ctx->addCellTimingDelay(ci->name, id_Ci, id_Co, 0.2); + ctx->addCellTimingDelay(ci->name, ctx->id("I1"), id_Co, 1.0); + ctx->addCellTimingDelay(ci->name, ctx->id("I2"), id_Co, 1.0); } if (lct.ff.ff_used) { ctx->addCellTimingClock(ci->name, id_CLK); @@ -638,7 +640,7 @@ struct FabulousImpl : ViaductAPI delay_t predictDelay(BelId src_bel, IdString src_pin, BelId dst_bel, IdString dst_pin) const override { - if (src_pin == id_Ci && dst_pin == id_Co) + if (src_pin == id_Co && dst_pin == id_Ci) return 0.5; auto driver_loc = ctx->getBelLocation(src_bel); |