Games / Command flash cards / Sign-off checks and violations

Sign-off checks and violations checked against the open rule decks

Choose a section to drill, or play every section mixed together. Each section lists the commands it covers, and any kinds of card it holds besides the plain one: a command whose meaning you pick.

SourceThese cards describe the checks a design must pass before tapeout, using the rule decks that ship with OpenROAD-flow-scripts: the KLayout runsets for sky130 and ASAP7 and the sky130 layout-versus-schematic runset. Rule names and values are quoted from those files. Every process has its own rules; the families and the reasons behind them are what carry across. Reference: the sky130 design rule documentation (the open rule decks on GitHub).

All sections

A mixed round drawn from every section. Due cards come first, then new cards in random order.

56cards across 7 sections

mixed round play

Rule families and naming

The kinds of geometric rule, and how two real processes name them.

widthspacingareaenclosurem1.1GATE.S.1WELL.A.1A

Geometry rules

Width, spacing, area, enclosure, and the rules that only appear at small nodes.

m1.2m1.3abm1.4m1.6m1.7FIN.S.1GATE.W.1end-of-line

Connectivity and LVS

Proving the layout is the circuit: extraction, shorts, opens, and device mismatch.

extract_devicesconnectschematicshortopendevice-mismatchproperty-check

Electrical and reliability checks

Antenna, floating nodes, electromigration, voltage drop, and latch-up.

check_antennasrepair_antennasERCelectromigrationanalyze_power_gridlatch-up

Density and fill

Why layers must be evenly filled, and what the flow adds to achieve it.

metal-densitydensity_fillUSE_FILLFILL_CONFIGvpp.5a

DFM (Design for Manufacturing)

Checks that ask not whether a layout is legal, but whether it will yield.

critical arealithographyhotspotplanaritypattern matching

Running the checks

Which tool runs what, how results are counted, and what a waiver is.

klayoutmagicnetgencheck_antennas6_drc_count.rptwaiver