sch2mag

sch2mag

sch2mag is the schematic-to-layout entrypoint. It netlists the schematic, builds the connectivity graph, runs placement and routing, and writes both Magic and .cic layout output.

This fixture stays standalone for CI. The test driver clones the required repositories, then runs the local work/ flow inside lelo_temp_sky130a.

make test && printf 'Generated files:\n' && ls -1 lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.cic lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.mag

make[2]: Entering directory '/__w/cicpy/cicpy/tests/sch2mag'
cd lelo_temp_sky130a && git reset --hard
HEAD is now at 11b1e2f Added layout of comparator
cd lelo_temp_sky130a/work && cicpy sch2mag LELO_TEMP_SKY130A LELOTEMP_CMP
make[3]: Entering directory '/__w/cicpy/cicpy/tests/sch2mag/lelo_temp_sky130a/work'
xschem -q -x -b -s -n ../design/LELO_TEMP_SKY130A/LELOTEMP_CMP.sch -l xsch/xsch_LELOTEMP_CMP.log
cp xsch/LELOTEMP_CMP.spice xsch/LELOTEMP_CMP.spice.bak
cat xsch/LELOTEMP_CMP.spice.bak | perl ../tech/script/fixsubckt > xsch/LELOTEMP_CMP.spice
rm xsch/LELOTEMP_CMP.spice.bak
make[3]: Leaving directory '/__w/cicpy/cicpy/tests/sch2mag/lelo_temp_sky130a/work'
Adding cut cut_M1M2_2x2
Adding cut cut_M1M2_1x2
Adding cut cut_M1M2_2x1
Adding cut cut_M2M3_2x1
Adding cut cut_M2M3_1x2
Adding cut cut_M3M4_1x2
Adding cut cut_M2M4_2x1
Adding cut cut_M3M4_2x1
Adding cut cut_M2M4_1x2
make[2]: Leaving directory '/__w/cicpy/cicpy/tests/sch2mag'
Generated files:
lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.cic
lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.mag

Command under test:

cd lelo_temp_sky130a/work
cicpy sch2mag LELO_TEMP_SKY130A LELOTEMP_CMP

Standalone test driver:

Makefile:

PYTHON ?= python3

lelo_temp_sky130a:
	git clone https://github.com/wulffern/lelo_temp_sky130a lelo_temp_sky130a
	git clone https://github.com/analogicus/jnw_tr_sky130a jnw_tr_sky130a
	git clone https://github.com/wulffern/lelo_atr_sky130a lelo_atr_sky130a
	git clone https://github.com/analogicus/jnw_atr_sky130a jnw_atr_sky130a
	git clone https://github.com/wulffern/tech_sky130A tech_sky130A

test: lelo_temp_sky130a
	cd lelo_temp_sky130a && git reset --hard
	cd lelo_temp_sky130a/work && cicpy sch2mag LELO_TEMP_SKY130A LELOTEMP_CMP
	@test -f lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.cic
	@test -f lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.mag

svg: lelo_temp_sky130a
	cicpy svg lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.cic \
		lelo_temp_sky130a/tech/cic/sky130A.tech LELOTEMP_CMP \
		--I jnw_atr_sky130a/design/JNW_ATR_SKY130A.cic \
		--I jnw_tr_sky130a/design/JNW_TR_SKY130A.cic

clean:
	rm -rf lelo_temp_sky130a
	rm -rf jnw_tr_sky130a
	rm -rf jnw_atr_sky130a
	rm -rf tech_sky130A
	-rm -rf LELOTEMP_CMP_svg LELOTEMP_CMP_svg.html

docs:
	${PYTHON} ../gendoc.py sch2mag.md ../../docs/sch2mag.md

Excerpt from generated .cic:

lelo_temp_sky130a/design/LELO_TEMP_SKY130A/LELOTEMP_CMP.cic:

{
    "cells": [
        {
            "class": "Cut",
            "x1": 0,
            "y1": 0,
            "x2": 3400,
            "y2": 8800,
            "layer": "",
            "net": "",
            "name": "cut_M2M4_1x2",
            "has_pr": false,
            "ckt": {},
            "children": [
                {
                    "class": "Rect",
                    "x1": 0,
                    "y1": 0,
                    "x2": 3400,
                    "y2": 8800,
                    "layer": "M2",
                    "net": ""
                },
                {
                    "class": "Rect",
                    "x1": 300,
                    "y1": 600,
                    "x2": 3100,
                    "y2": 3400,
                    "layer": "VIA2",
                    "net": ""
                },
                {
                    "class": "Rect",
                    "x1": 300,
                    "y1": 5400,
                    "x2": 3100,
                    "y2": 8200,
                    "layer": "VIA2",
                    "net": ""
                },
                {
                    "class": "Rect",
                    "x1": 0,
                    "y1": 0,
                    "x2": 3400,
                    "y2": 8800,
                    "layer": "M3",
                    "net": ""
                },
                {
                    "class": "Rect",
                    "x1": 300,
                    "y1": 600,
                    "x2": 3100,
                    "y2": 3400,
                    "layer": "VIA3",
                    "net": ""
                },
                {
                    "class": "Rect",
                    "x1": 300,
                    "y1": 5400,
                    "x2": 3100,
                    "y2": 8200,
                    "layer": "VIA3",
                    "net": ""
                },
                {
                    "class": "Rect",
                    "x1": 0,
                    "y1": 0,
                    "x2": 3400,
                    "y2": 8800,
                    "layer": "M4",
                    "net": ""
                }
            ]
        },
        {

Rendered SVG from the generated layout data:

The top-cell .cic from sch2mag only contains LELOTEMP_CMP plus generated cut cells. For SVG rendering, the fixture uses cicpy svg --I ... to include the dependency libraries JNW_ATR_SKY130A.cic and JNW_TR_SKY130A.cic.

make svg