diff options
| -rw-r--r-- | ice40/arch.cc | 8 | ||||
| -rw-r--r-- | ice40/arch.h | 1 |
2 files changed, 5 insertions, 4 deletions
diff --git a/ice40/arch.cc b/ice40/arch.cc index eb26ae5a..b5e20566 100644 --- a/ice40/arch.cc +++ b/ice40/arch.cc @@ -575,11 +575,10 @@ bool Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay { const auto &driver = net_info->driver; if (driver.port == id_COUT && sink.port == id_CIN) { - auto driver_loc = getBelLocation(driver.cell->bel); - auto sink_loc = getBelLocation(sink.cell->bel); - if (driver_loc.y == sink_loc.y) + if (driver.cell->constr_abs_z && driver.cell->constr_z < 7) budget = 0; - else + else { + NPNR_ASSERT(driver.cell->constr_z == 7); switch (args.type) { #ifndef ICE40_HX1K_ONLY case ArchArgs::HX8K: @@ -600,6 +599,7 @@ bool Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay default: log_error("Unsupported iCE40 chip type.\n"); } + } return true; } return false; diff --git a/ice40/arch.h b/ice40/arch.h index 90117939..f7d31b0e 100644 --- a/ice40/arch.h +++ b/ice40/arch.h @@ -485,6 +485,7 @@ struct Arch : BaseCtx Loc getBelLocation(BelId bel) const { + NPNR_ASSERT(bel != BelId()); Loc loc; loc.x = chip_info->bel_data[bel.index].x; loc.y = chip_info->bel_data[bel.index].y; |