Added a placeholder padframe layout, and added an almost-complete
first draft of a datasheet for the chip.
diff --git a/mag/bump_bond.tcl b/mag/bump_bond.tcl
new file mode 100644
index 0000000..bb6367b
--- /dev/null
+++ b/mag/bump_bond.tcl
@@ -0,0 +1,15 @@
+namespace path {::tcl::mathop ::tcl::mathfunc}
+
+# Bump bond is a circle (approximated by a 20-sided polygon) of
+# diameter nominally 250um
+
+set rbump 125
+set coords []
+for {set i 0} {$i < 20} {incr i} {
+ set angle [* $i 18]
+ set arad [/ [* 3.1415926 $angle] 180.0]
+ lappend coords [int [* $rbump [cos $arad]]]um
+ lappend coords [int [* $rbump [sin $arad]]]um
+}
+
+eval [subst {polygon metalrdl $coords}]
diff --git a/mag/bump_pad.mag b/mag/bump_pad.mag
new file mode 100644
index 0000000..ac9f3b4
--- /dev/null
+++ b/mag/bump_pad.mag
@@ -0,0 +1,32 @@
+magic
+tech sky130A
+timestamp 1602626256
+<< metalrdl >>
+tri -3800 11800 0 12400 se
+tri 0 11800 3800 12400 sw
+tri -7300 10100 -3800 11800 se
+rect -3800 10100 3800 11800
+tri 3800 10100 7300 11800 sw
+tri -10100 7300 -7300 10100 se
+rect -7300 7300 7300 10100
+tri 7300 7300 10100 10100 sw
+tri -11800 3800 -10100 7300 se
+rect -10100 3800 10100 7300
+tri 10100 3800 11800 7300 sw
+tri -12400 0 -11800 3800 se
+tri -12400 -3800 -11800 0 ne
+rect -11800 -3800 11800 3800
+tri 11800 0 12500 3800 sw
+tri 11800 -3800 12500 0 nw
+tri -11800 -7300 -10100 -3800 ne
+rect -10100 -7300 10100 -3800
+tri 10100 -7300 11800 -3800 nw
+tri -10100 -10100 -7300 -7300 ne
+rect -7300 -10100 7300 -7300
+tri 7300 -10100 10100 -7300 nw
+tri -7300 -11800 -3800 -10100 ne
+rect -3800 -11800 3800 -10100
+tri 3800 -11800 7300 -10100 nw
+tri -3800 -12400 0 -11800 ne
+tri 0 -12400 3800 -11800 nw
+<< end >>
diff --git a/mag/layout_test.png b/mag/layout_test.png
new file mode 100644
index 0000000..d8426b4
--- /dev/null
+++ b/mag/layout_test.png
Binary files differ
diff --git a/mag/padframe.mag b/mag/padframe.mag
new file mode 100644
index 0000000..6a37a5a
--- /dev/null
+++ b/mag/padframe.mag
@@ -0,0 +1,289 @@
+magic
+tech sky130A
+magscale 1 2
+timestamp 1602626460
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_61 ~/projects/efabless/tech/SW/sky130A/libs.ref/sky130_fd_io/mag
+timestamp 1602619247
+transform 0 -1 39547 -1 0 78134
+box -143 -543 16134 39593
+use sky130_ef_io__corner_pad sky130_ef_io__corner_pad_0 ~/projects/efabless/tech/SW/sky130A/libs.ref/sky130_fd_io/mag
+timestamp 1602619247
+transform -1 0 40000 0 -1 40800
+box 0 0 40000 40800
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_0
+timestamp 1602619247
+transform -1 0 73400 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_1
+timestamp 1602619247
+transform -1 0 124200 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_2
+timestamp 1602619247
+transform -1 0 175000 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_4
+timestamp 1602619247
+transform -1 0 276600 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_3
+timestamp 1602619247
+transform -1 0 225800 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_5
+timestamp 1602619247
+transform -1 0 327400 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_6
+timestamp 1602619247
+transform -1 0 378200 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_7
+timestamp 1602619247
+transform -1 0 429000 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_8
+timestamp 1602619247
+transform -1 0 479800 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_21
+timestamp 1602619247
+transform 0 1 600058 1 0 54143
+box -143 -543 16134 39593
+use sky130_fd_io__corner_bus_overlay sky130_fd_io__corner_bus_overlay_0 ~/projects/efabless/tech/SW/sky130A/libs.ref/sky130_fd_io/mag
+timestamp 1602619247
+transform 0 1 599792 -1 0 40000
+box 0 0 40000 40733
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_9
+timestamp 1602619247
+transform -1 0 530600 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_10
+timestamp 1602619247
+transform -1 0 581400 0 -1 39593
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_60
+timestamp 1602619247
+transform 0 -1 39547 -1 0 175734
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_59
+timestamp 1602619247
+transform 0 -1 39547 -1 0 126934
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_19
+timestamp 1602619247
+transform 0 1 600058 1 0 102943
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_18
+timestamp 1602619247
+transform 0 1 600058 1 0 200543
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_20
+timestamp 1602619247
+transform 0 1 600058 1 0 151743
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_53
+timestamp 1602619247
+transform 0 -1 39547 -1 0 273334
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_54
+timestamp 1602619247
+transform 0 -1 39547 -1 0 224534
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_17
+timestamp 1602619247
+transform 0 1 600058 1 0 298143
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_16
+timestamp 1602619247
+transform 0 1 600058 1 0 249343
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_55
+timestamp 1602619247
+transform 0 -1 39547 -1 0 322134
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_56
+timestamp 1602619247
+transform 0 -1 39547 -1 0 419734
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_57
+timestamp 1602619247
+transform 0 -1 39547 -1 0 370934
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_14
+timestamp 1602619247
+transform 0 1 600058 1 0 395743
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_15
+timestamp 1602619247
+transform 0 1 600058 1 0 346943
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_48
+timestamp 1602619247
+transform 0 -1 39547 -1 0 523534
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_58
+timestamp 1602619247
+transform 0 -1 39547 -1 0 468534
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_13
+timestamp 1602619247
+transform 0 1 600058 1 0 493343
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_12
+timestamp 1602619247
+transform 0 1 600058 1 0 444543
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_49
+timestamp 1602619247
+transform 0 -1 39547 -1 0 572334
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_50
+timestamp 1602619247
+transform 0 -1 39547 -1 0 619134
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_11
+timestamp 1602619247
+transform 0 1 600058 1 0 542143
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_22
+timestamp 1602619247
+transform 0 1 600058 1 0 595143
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_51
+timestamp 1602619247
+transform 0 -1 39547 -1 0 716734
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_52
+timestamp 1602619247
+transform 0 -1 39547 -1 0 667934
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_24
+timestamp 1602619247
+transform 0 1 600058 1 0 692743
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_23
+timestamp 1602619247
+transform 0 1 600058 1 0 643943
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_43
+timestamp 1602619247
+transform 0 -1 39547 -1 0 765534
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_42
+timestamp 1602619247
+transform 0 -1 39547 -1 0 814334
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_25
+timestamp 1602619247
+transform 0 1 600058 1 0 741543
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_31
+timestamp 1602619247
+transform 0 1 600058 1 0 790343
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_46
+timestamp 1602619247
+transform 0 -1 39547 -1 0 911934
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_44
+timestamp 1602619247
+transform 0 -1 39547 -1 0 863134
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_29
+timestamp 1602619247
+transform 0 1 600058 1 0 887943
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_32
+timestamp 1602619247
+transform 0 1 600058 1 0 839143
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_47
+timestamp 1602619247
+transform 0 -1 39547 -1 0 1006534
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_45
+timestamp 1602619247
+transform 0 -1 39547 -1 0 960734
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_27
+timestamp 1602619247
+transform 0 1 600058 1 0 985543
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_30
+timestamp 1602619247
+transform 0 1 600058 1 0 936743
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_41
+timestamp 1602619247
+transform 1 0 58205 0 1 1023084
+box -143 -543 16134 39593
+use sky130_fd_io__corner_bus_overlay sky130_fd_io__corner_bus_overlay_1
+timestamp 1602619247
+transform 0 -1 39813 1 0 1022677
+box 0 0 40000 40733
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_39
+timestamp 1602619247
+transform 1 0 159805 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_40
+timestamp 1602619247
+transform 1 0 109005 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_38
+timestamp 1602619247
+transform 1 0 210605 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_37
+timestamp 1602619247
+transform 1 0 261405 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_35
+timestamp 1602619247
+transform 1 0 363005 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_36
+timestamp 1602619247
+transform 1 0 312205 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_34
+timestamp 1602619247
+transform 1 0 413805 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_33
+timestamp 1602619247
+transform 1 0 464605 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_28
+timestamp 1602619247
+transform 1 0 515405 0 1 1023084
+box -143 -543 16134 39593
+use sky130_ef_io__corner_pad sky130_ef_io__corner_pad_1
+timestamp 1602619247
+transform 1 0 599605 0 1 1021877
+box 0 0 40000 40800
+use sky130_ef_io__gpiov2_pad sky130_ef_io__gpiov2_pad_26
+timestamp 1602619247
+transform 1 0 566205 0 1 1023084
+box -143 -543 16134 39593
+use bump_pad bump_pad_3
+array 0 1 100000 0 1 100000
+timestamp 1602626256
+transform 1 0 468644 0 1 471210
+box -24800 -24800 25000 24800
+use bump_pad bump_pad_2
+array 0 1 100000 0 1 100000
+timestamp 1602626256
+transform 1 0 68644 0 1 471210
+box -24800 -24800 25000 24800
+use bump_pad bump_pad_1
+array 0 5 100000 0 3 100000
+timestamp 1602626256
+transform 1 0 68644 0 1 671210
+box -24800 -24800 25000 24800
+use bump_pad bump_pad_0
+array 0 5 100000 0 3 100000
+timestamp 1602626256
+transform 1 0 68644 0 1 71210
+box -24800 -24800 25000 24800
+<< end >>
