add guard ring to flash array
diff --git a/flash_array/flash_array_2x4.mag b/flash_array/flash_array_2x4.mag
index ae65086..87dabc1 100644
--- a/flash_array/flash_array_2x4.mag
+++ b/flash_array/flash_array_2x4.mag
@@ -1,48 +1,81 @@
magic
tech sky130A
-timestamp 1633983454
+timestamp 1634127046
<< dnwell >>
rect -1700 0 -500 800
<< pwell >>
rect -1600 100 -500 700
<< psubdiff >>
+rect -2100 1000 1400 1200
+rect -2100 900 -1900 1000
+rect 1200 900 1400 1000
rect -650 510 -530 530
rect -650 240 -630 510
rect -550 240 -530 510
rect -650 220 -530 240
+rect -2100 -400 -1900 -300
+rect 1200 -400 1400 -300
+rect -2100 -600 -1800 -400
+rect 1100 -600 1400 -400
<< psubdiffcont >>
+rect -2100 -300 -1900 900
rect -630 240 -550 510
+rect 1200 -300 1400 900
+rect -1800 -600 1100 -400
<< locali >>
-rect -1470 390 -1380 850
-rect -1340 450 -1250 850
-rect -1210 390 -1120 850
+rect -2150 900 -1850 950
+rect -2150 -300 -2100 900
+rect -1900 -300 -1850 900
+rect -1470 390 -1380 1300
+rect -1340 450 -1250 1300
+rect -1210 390 -1120 1300
rect -1470 290 -1350 390
rect -1240 290 -1120 390
-rect -1070 390 -980 850
-rect -940 450 -850 850
-rect -810 390 -720 850
-rect -440 800 -260 850
-rect -170 800 -50 850
-rect -20 800 40 850
-rect 70 800 110 850
-rect 150 800 190 850
+rect -1070 390 -980 1300
+rect -940 450 -850 1300
+rect -810 390 -720 1300
+rect -440 800 -260 1300
+rect -170 800 -50 1300
+rect -20 800 40 1300
+rect 70 800 110 1300
+rect 150 800 190 1300
+rect 240 850 280 1300
+rect 310 850 350 1300
rect 240 800 285 850
rect 305 800 350 850
-rect 390 800 430 850
-rect 470 800 510 850
+rect 390 800 430 1300
+rect 470 800 510 1300
rect -1070 290 -950 390
rect -840 290 -720 390
rect -650 510 -530 530
rect -650 240 -630 510
rect -550 240 -530 510
-rect 700 430 800 850
-rect 850 320 950 850
+rect 700 430 800 1300
+rect 850 320 950 1300
rect -650 220 -530 240
rect -1400 160 -530 220
rect -650 -60 -530 160
rect -170 -60 -50 270
rect 700 220 950 320
+rect 1150 900 1450 950
rect -650 -180 -50 -60
+rect -2150 -350 -1850 -300
+rect 1150 -300 1200 900
+rect 1400 700 1450 900
+rect 1400 -100 1600 700
+rect 1400 -300 1450 -100
+rect 1150 -350 1450 -300
+rect -2150 -400 1450 -350
+rect -2150 -600 -1800 -400
+rect 1100 -600 1450 -400
+rect -2150 -650 1450 -600
+<< viali >>
+rect 1600 -100 2400 700
+<< metal1 >>
+rect 1500 700 2700 800
+rect 1500 -100 1600 700
+rect 2400 -100 2700 700
+rect 1500 -200 2700 -100
use sky130_fd_bs_flash__special_sonosfet_star_JJF9VQ sky130_fd_bs_flash__special_sonosfet_star_JJF9VQ_1
timestamp 1633982189
transform 1 0 -1298 0 1 340
@@ -74,4 +107,6 @@
port 8 n
rlabel locali -810 830 -720 850 1 FD1
port 9 n
+rlabel metal1 2500 -200 2700 800 1 VGND
+port 10 n
<< end >>
