vco+buf
diff --git a/mag/prescaler.mag b/mag/prescaler.mag
new file mode 100644
index 0000000..32c8698
--- /dev/null
+++ b/mag/prescaler.mag
@@ -0,0 +1,166 @@
+magic
+tech sky130A
+timestamp 1640957100
+<< nwell >>
+rect 965 1061 1081 1192
+rect 965 1036 1082 1061
+rect 997 760 1073 1036
+rect 995 743 1073 760
+rect 201 527 277 721
+rect 195 459 277 527
+rect 195 271 271 459
+rect 195 265 353 271
+rect 208 260 353 265
+rect 995 260 1035 743
+<< locali >>
+rect 225 1285 245 1310
+rect 990 1090 1010 1380
+rect 1350 1135 1430 1155
+rect 990 1065 1025 1090
+rect 1410 1015 1430 1135
+rect -155 185 -135 330
+rect -155 165 -80 185
+rect 225 160 245 255
+rect 1015 210 1055 235
+rect 1795 210 1825 235
+rect 225 140 255 160
+rect 1035 140 1055 210
+rect 1805 80 1825 210
+<< viali >>
+rect 200 1285 225 1310
+rect 1410 995 1430 1015
+rect -155 330 -135 350
+rect 1060 140 1080 160
+rect 1805 60 1825 80
+<< metal1 >>
+rect 190 1310 235 1320
+rect -155 1295 200 1310
+rect -155 360 -140 1295
+rect 190 1285 200 1295
+rect 225 1285 235 1310
+rect 190 1275 235 1285
+rect 1350 1095 1795 1110
+rect 1400 1015 1440 1025
+rect 1400 995 1410 1015
+rect 1430 995 1440 1015
+rect 1400 985 1440 995
+rect 140 770 160 775
+rect 130 765 170 770
+rect 130 735 135 765
+rect 165 755 170 765
+rect 1415 755 1430 985
+rect 165 740 1430 755
+rect 165 735 170 740
+rect 130 730 170 735
+rect -165 350 -125 360
+rect -165 330 -155 350
+rect -135 330 -125 350
+rect -165 325 -125 330
+rect -155 210 -80 225
+rect -155 160 -135 210
+rect 1050 165 1090 170
+rect -165 155 -125 160
+rect -165 125 -160 155
+rect -130 125 -125 155
+rect 1050 135 1055 165
+rect 1085 135 1090 165
+rect 1780 140 1795 1095
+rect 1050 130 1090 135
+rect -165 120 -125 125
+rect 1795 85 1835 90
+rect 1795 55 1800 85
+rect 1830 55 1835 85
+rect 1795 50 1835 55
+<< via1 >>
+rect 135 735 165 765
+rect -160 125 -130 155
+rect 1055 160 1085 165
+rect 1055 140 1060 160
+rect 1060 140 1080 160
+rect 1080 140 1085 160
+rect 1055 135 1085 140
+rect 1800 80 1830 85
+rect 1800 60 1805 80
+rect 1805 60 1825 80
+rect 1825 60 1830 80
+rect 1800 55 1830 60
+<< metal2 >>
+rect 125 765 175 775
+rect 125 755 135 765
+rect -210 740 135 755
+rect 125 735 135 740
+rect 165 735 175 765
+rect 125 725 175 735
+rect 995 250 1010 1290
+rect -210 230 255 250
+rect 485 230 1035 250
+rect 1045 165 1095 175
+rect -170 155 -120 165
+rect -170 125 -160 155
+rect -130 125 -120 155
+rect 1045 135 1055 165
+rect 1085 155 1095 165
+rect 1085 140 1930 155
+rect 1085 135 1095 140
+rect 1045 125 1095 135
+rect -170 115 -120 125
+rect -155 80 -135 115
+rect 1790 85 1840 95
+rect 1790 80 1800 85
+rect -155 60 1800 80
+rect 1790 55 1800 60
+rect 1830 55 1840 85
+rect 1790 45 1840 55
+<< metal4 >>
+rect 965 1675 1085 1705
+rect 1050 1330 1085 1675
+rect 1300 1330 1890 1360
+rect 175 730 285 790
+rect 990 730 1075 790
+rect 1365 760 1775 790
+rect 175 530 220 730
+rect 195 -155 225 -10
+rect 1860 -155 1890 1330
+rect 195 -160 265 -155
+rect 195 -185 270 -160
+rect 985 -185 1055 -155
+rect 1750 -185 1890 -155
+use nand nand_1
+timestamp 1640957032
+transform -1 0 1325 0 -1 1050
+box -40 -310 300 315
+use nand nand_0
+timestamp 1640957032
+transform 1 0 -55 0 1 270
+box -40 -310 300 315
+use tspc tspc_0
+timestamp 1640956963
+transform 1 0 325 0 1 295
+box -70 -490 690 465
+use tspc tspc_1
+timestamp 1640956963
+transform 1 0 1105 0 1 295
+box -70 -490 690 465
+use tspc tspc_2
+timestamp 1640956963
+transform -1 0 935 0 -1 1225
+box -70 -490 690 465
+<< labels >>
+rlabel metal2 -210 740 170 755 1 mc1
+rlabel metal1 170 740 1430 755 1 mc1
+rlabel metal1 1415 740 1430 1015 1 mc1
+rlabel metal2 -210 230 255 250 1 clk
+rlabel space 255 230 1035 250 1 clk
+rlabel metal2 1055 140 1930 155 1 Out
+rlabel metal4 1050 1360 1085 1705 1 GND
+rlabel metal4 1345 1330 1890 1360 1 GND
+rlabel metal4 1860 -185 1890 1330 1 GND
+rlabel metal4 1750 -185 1860 -155 1 GND
+rlabel space 985 -185 1060 -155 1 GND
+rlabel metal4 195 -185 225 -40 1 GND
+rlabel space 195 -185 270 -155 1 GND
+rlabel metal4 220 -40 225 -10 1 GND
+rlabel space 175 560 225 795 1 VDD
+rlabel space 175 730 295 790 1 VDD
+rlabel metal4 990 730 1070 790 1 VDD
+<< end >>
