sky130-modexp (2AMLogic)ECADConfidence: Medium

LVS reports a power_connectivity mismatch with pin VPB reaching 26 distinct nets, one per placement row's n-well, because the tap cell is abstracted with only VGND and VPWR ports.

Impact Analysis

Persona

Electrical Engineer

Team Size Impact

5x Multiplier

Prototype Delay

3 Days

Est. Annual Cost

$30,000

1 user · 1 month240 min
Rest of team960 min
Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources

2AMLogic/sky130-modexp Issue #233: T1 item 4 (LVS clean): LVS match against the committed as-built netlist, and root-cause the VPB power_connectivity mismatch

github.com

→

Analyst Notes

From the Grok pain-radar digests, Oct 26-27 2026 (Oct 26 12:41 PM ET through Oct 27 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-27: issue/PR/thread read; title and state confirmed.