machxo2: less pessimistic delay prediction

2023-11-09 01:29:50 +00:00 · 2023-11-09 01:29:50 +00:00 · 506d5f9422
commit 506d5f9422
parent 4c6003ac0b
1 changed files with 1 additions and 1 deletions
--- a/machxo2/arch.cc
+++ b/machxo2/arch.cc
@ -476,7 +476,7 @@ delay_t Arch::predictDelay(BelId src_bel, IdString src_pin, BelId dst_bel, IdStr

    int dx = abs(driver_loc.x - sink_loc.x), dy = abs(driver_loc.y - sink_loc.y);

-    return (500 - 22 * device_speed) *
+    return (250 - 22 * device_speed) *
           (3 + std::max(dx - 5, 0) + std::max(dy - 5, 0) + 2 * (std::min(dx, 5) + std::min(dy, 5)));
 }