Modified the magic device generator to properly handle the "nf"
parameter on MOSFET devices when converting from a netlist to
layout. Corrected the netgen setup to ignore both "nf" and "mult"
as netlist parameters, as well as other non-critical parameters
that may or may not appear in both the schematic and layout-
extracted netlists.
diff --git a/sky130/magic/sky130.tcl b/sky130/magic/sky130.tcl
index 684aee5..bf66b4f 100644
--- a/sky130/magic/sky130.tcl
+++ b/sky130/magic/sky130.tcl
@@ -3564,17 +3564,28 @@
dict set pdkparams [string tolower $key] $value
}
m {
- # M value in an expression like '1*1' convert to
- # M and NF
- if {[regexp {\'([0-9]+)\*([0-9]+)\'} $value valid m nf]} {
- dict set pdkparams [string tolower $key] $m
- dict set pdkparams nf $nf
- } else {
- dict set pdkparams [string tolower $key] $value
- }
+ dict set pdkparams [string tolower $key] $value
+ }
+ nf {
+ # Adjustment ot W will be handled below
+ dict set pdkparams [string tolower $key] $value
}
}
}
+
+ # Magic does not understand "nf" as a parameter, but expands to
+ # "nf" number of devices connected horizontally. The "w" value
+ # must be divided down accordingly, as the "nf" parameter implies
+ # that the total width "w" is divided into "nf" fingers.
+
+ catch {
+ set w [dict get $pdkparams w]
+ set nf [dict get $pdkparams nf]
+ if {$nf > 1} {
+ dict set pdkparams w [expr $w / $nf]
+ }
+ }
+
return $pdkparams
}
diff --git a/sky130/netgen/sky130_setup.tcl b/sky130/netgen/sky130_setup.tcl
index debf009..66d40ee 100644
--- a/sky130/netgen/sky130_setup.tcl
+++ b/sky130/netgen/sky130_setup.tcl
@@ -40,7 +40,7 @@
property "-circuit1 $dev" parallel {value par}
property "-circuit1 $dev" tolerance {l 0.01} {w 0.01}
# Ignore these properties
- # property "-circuit2 $dev" delete
+ property "-circuit2 $dev" delete mult
}
if {[lsearch $cells2 $dev] >= 0} {
permute "-circuit2 $dev" 1 2
@@ -53,7 +53,7 @@
property "-circuit1 $dev" parallel {value par}
property "-circuit1 $dev" tolerance {l 0.01} {w 0.01}
# Ignore these properties
- # property "-circuit2 $dev" delete
+ property "-circuit2 $dev" delete mult
}
}
@@ -78,7 +78,7 @@
property "-circuit1 $dev" parallel {value par}
property "-circuit1 $dev" tolerance {l 0.01} {w 0.01}
# Ignore these properties
- # property "-circuit2 $dev" delete
+ property "-circuit2 $dev" delete mult
}
if {[lsearch $cells2 $dev] >= 0} {
permute "-circuit2 $dev" 1 2
@@ -91,7 +91,7 @@
property "-circuit1 $dev" parallel {value par}
property "-circuit1 $dev" tolerance {l 0.01} {w 0.01}
# Ignore these properties
- # property "-circuit2 $dev" delete
+ property "-circuit2 $dev" delete mult
}
}
@@ -111,7 +111,7 @@
property "-circuit1 $dev" parallel {w add}
property "-circuit1 $dev" tolerance {w 0.01} {l 0.01}
# Ignore these properties
- property "-circuit2 $dev" delete as ad ps pd
+ property "-circuit2 $dev" delete as ad ps pd mult sa sb sd
}
if {[lsearch $cells2 $dev] >= 0} {
permute "-circuit2 $dev" 1 3
@@ -120,7 +120,7 @@
property "-circuit1 $dev" parallel {w add}
property "-circuit2 $dev" tolerance {w 0.01} {l 0.01}
# Ignore these properties
- property "-circuit2 $dev" delete as ad ps pd
+ property "-circuit2 $dev" delete as ad ps pd mult sa sb sd
}
}
@@ -138,7 +138,7 @@
property "-circuit1 $dev" parallel {value add}
property "-circuit1 $dev" tolerance {area 0.02}
# Ignore these properties
- property "-circuit2 $dev" delete perim
+ property "-circuit2 $dev" delete mult perim
}
if {[lsearch $cells2 $dev] >= 0} {
property "-circuit2 $dev" parallel enable
@@ -146,7 +146,7 @@
property "-circuit1 $dev" parallel {value add}
property "-circuit2 $dev" tolerance {area 0.02}
# Ignore these properties
- property "-circuit2 $dev" delete perim
+ property "-circuit2 $dev" delete mult perim
}
}
@@ -164,7 +164,7 @@
property "-circuit1 $dev" parallel {value add}
property "-circuit1 $dev" tolerance {l 0.01} {w 0.01}
# Ignore these properties
- # property "-circuit2 $dev" delete perim
+ property "-circuit2 $dev" delete mult perim
}
if {[lsearch $cells2 $dev] >= 0} {
property "-circuit1 $dev" parallel enable
@@ -172,7 +172,7 @@
property "-circuit1 $dev" parallel {value add}
property "-circuit1 $dev" tolerance {l 0.01} {w 0.01}
# Ignore these properties
- # property "-circuit2 $dev" delete perim
+ property "-circuit2 $dev" delete mult perim
}
}
@@ -211,12 +211,12 @@
if {[lsearch $cells1 $dev] >= 0} {
property "-circuit1 $dev" parallel enable
# Ignore these properties
- # property "-circuit2 $dev" delete
+ property "-circuit2 $dev" delete mult
}
if {[lsearch $cells2 $dev] >= 0} {
property "-circuit2 $dev" parallel enable
# Ignore these properties
- # property "-circuit2 $dev" delete
+ property "-circuit2 $dev" delete mult
}
}
