diff --git a/sim/psk.txt b/sim/psk.txt
new file mode 100644
index 0000000..b031653
--- /dev/null
+++ b/sim/psk.txt
@@ -0,0 +1,53 @@
+$ 1 5e-11 63.79968419005069 50 5 50 5e-11
+196 832 160 928 160 8194 8 3.3
+207 1024 448 1056 448 5 S0
+207 1024 416 1056 416 5 S1
+207 1024 384 1056 384 5 S2
+207 1024 352 1056 352 5 S3
+207 1024 320 1056 320 5 S4
+207 1024 288 1056 288 5 S5
+207 1024 256 1056 256 5 S6
+207 1024 224 1056 224 5 S7
+207 832 160 800 160 5 S7
+207 832 192 800 192 5 S6
+207 832 224 800 224 5 S5
+207 832 256 800 256 5 S4
+207 832 288 800 288 5 S3
+207 832 320 800 320 5 S2
+207 832 352 800 352 5 S1
+207 832 384 800 384 5 S0
+R 1024 560 1088 560 4 5 250000000 3.3 0 0 0.5
+L 832 608 800 608 0 1 false 5 0
+L 832 640 800 640 0 0 false 5 0
+L 832 576 800 576 0 0 false 5 0
+L 832 544 800 544 0 1 false 5 0
+L 832 512 800 512 0 0 false 5 0
+L 832 480 800 480 0 1 false 5 0
+L 832 448 800 448 0 0 false 5 0
+L 832 416 800 416 0 0 false 5 0
+168 928 224 1024 224 8194 8 3.3 0 0 3.3 0 3.3 0 0 0
+w 928 480 928 560 0
+159 928 560 1024 560 1 20 10000000000
+r 928 560 928 656 0 100000
+g 928 656 928 672 0 0
+R 1056 624 1088 624 4 5 1000000 3.3 0 0 0.03
+w 1056 624 976 624 0
+w 976 624 976 576 0
+w 1024 224 1024 160 0
+w 1024 160 1120 160 0
+212 1120 128 1216 128 0 2 a\s*\sb
+212 1120 192 1216 192 0 2 a\s*\sb
+w 1120 160 1120 192 0
+R 1120 128 1088 128 0 1 41015625 1 0 0 0.5
+R 1120 224 1088 224 0 1 41015625 1 0 4.71238898038469 0.5
+g 1216 160 1232 160 0 0
+g 1216 224 1232 224 0 0
+w 1328 192 1424 192 0
+w 1328 128 1424 128 0
+r 1216 128 1328 128 0 1000
+r 1216 192 1328 192 0 1000
+c 1328 192 1328 288 0 3.3e-10 0.506421240234943 0.001
+g 1328 288 1328 304 0 0
+c 1328 128 1328 32 0 3.3e-10 -0.7800790612401147 0.001
+g 1328 32 1328 16 0 0
+403 1424 240 1728 592 0 44_32_0_135618_1.2499999999999999e-16_1e-17_-1_2_43_0