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ng_ultra: Expand bounding box further for left-edge IO

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2024-07-17 15:38:38 +02:00 committed by Miodrag Milanovic
parent 4e0243d3e4
commit 0353c1c1dc
1 changed files with 7 additions and 4 deletions
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11
himbaechel/uarch/ng-ultra/ng_ultra.cc
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@ -700,10 +700,13 @@ BoundingBox NgUltraImpl::getRouteBoundingBox(WireId src, WireId dst) const
tile_xy(ctx->chip_info, dst.tile, dx, dy); tile_xy(ctx->chip_info, dst.tile, dx, dy);
expand(dx, dy); expand(dx, dy);
// Two TILEs left and up, and one tile right and down // Two TILEs left and up, and one tile right and down
return {(x0 & 0xfffc) - 8, int exp = 8;
(y0 & 0xfffc) - 8, if (x0 == 0 || y0==0 || y1==52*4 || x1==96*4)
(x1 & 0xfffc) + 8, exp = 24; // more expansion around IO
(y1 & 0xfffc) + 8}; return {(x0 & 0xfffc) - exp,
(y0 & 0xfffc) - exp,
(x1 & 0xfffc) + exp,
(y1 & 0xfffc) + exp};
} }
delay_t NgUltraImpl::estimateDelay(WireId src, WireId dst) const delay_t NgUltraImpl::estimateDelay(WireId src, WireId dst) const