diff --git a/bom/Makefile b/bom/Makefile
new file mode 100644
index 0000000..acb8452
--- /dev/null
+++ b/bom/Makefile
@@ -0,0 +1,24 @@
+BOOM_CONFIG=../../eda-tools/boom/boom-config
+BOOM=../../boom/boom
+
+KITS=1
+
+EQU=usb_jtag.equ $(shell $(BOOM_CONFIG) equ)
+INV=usb_jtag.inv $(shell $(BOOM_CONFIG) inv)
+DSC=$(shell $(BOOM_CONFIG) dsc)
+CHR=$(shell $(BOOM_CONFIG) chr)
+
+usb_jtag.ord:	usb_jtag.par $(INV) $(EQU)
+		$(BOOM) part2order $(KITS) $^ >$@ || \
+		  { rm -f $@; exit 1; }
+
+usb_jtag.par:	$(EQU) $(INV) $(CHR) ../usb_jtag.lst usb_jtag.sub
+		$(BOOM) bom2part $^ >$@ || \
+		  { rm -f $@; exit 1; }
+
+show:		usb_jtag.ord $(DSC)
+		grep -vw USB_JTAG $< | $(BOOM) prettyord -t - $(DSC) | \
+		  sed 's/^...  //'
+
+clean:
+		rm -f usb_jtag.par usb_jtag.ord
diff --git a/bom/usb_jtag.equ b/bom/usb_jtag.equ
new file mode 100644
index 0000000..1a01a28
--- /dev/null
+++ b/bom/usb_jtag.equ
@@ -0,0 +1 @@
+#EQU
diff --git a/bom/usb_jtag.inv b/bom/usb_jtag.inv
new file mode 100644
index 0000000..32b3572
--- /dev/null
+++ b/bom/usb_jtag.inv
@@ -0,0 +1 @@
+#INV
diff --git a/bom/usb_jtag.sub b/bom/usb_jtag.sub
new file mode 100644
index 0000000..cdedec0
--- /dev/null
+++ b/bom/usb_jtag.sub
@@ -0,0 +1,14 @@
+#SUB
+-> T=unknown
+
+C[0-9]* {
+    -> T=C
+    VAL=*F -> C=$VAL
+    FN=*V -> V=>=$FN
+}
+
+R[0-9]* {
+    -> T=R
+    VAL=$R -> R=$VAL
+    -> TOL=5%
+}
diff --git a/usb_jtag.sch b/usb_jtag.sch
index 28f40a6..24bfdbb 100644
--- a/usb_jtag.sch
+++ b/usb_jtag.sch
@@ -513,7 +513,7 @@ U 1 1 4C5EC6FF
 P 14150 4300
 F 0 "C16" H 14200 4400 50  0000 L CNN
 F 1 "480pF" H 14200 4200 50  0000 L CNN
-F 2 "SM0402" H 14150 4300 60  0001 C CNN
+F 2 "0402" H 14150 4300 60  0001 C CNN
 	1    14150 4300
 	1    0    0    -1  
 $EndComp
@@ -571,7 +571,7 @@ U 1 1 4C41D4F8
 P 10800 3900
 F 0 "R17" V 10880 3900 50  0000 C CNN
 F 1 "10k" V 10800 3900 50  0000 C CNN
-F 2 "SM0402" H 10800 3900 60  0001 C CNN
+F 2 "0402" H 10800 3900 60  0001 C CNN
 	1    10800 3900
 	0    -1   -1   0   
 $EndComp
@@ -599,7 +599,7 @@ U 1 1 4C418A67
 P 14650 6800
 F 0 "C35" H 14700 6900 50  0000 L CNN
 F 1 "100nF" H 14700 6700 50  0000 L CNN
-F 2 "SM0402" H 14650 6800 60  0001 C CNN
+F 2 "0402" H 14650 6800 60  0001 C CNN
 	1    14650 6800
 	1    0    0    -1  
 $EndComp
@@ -654,7 +654,7 @@ U 1 1 4C4183F7
 P 15000 6800
 F 0 "C33" H 15050 6900 50  0000 L CNN
 F 1 "100nF" H 15050 6700 50  0000 L CNN
-F 2 "SM0402" H 15000 6800 60  0001 C CNN
+F 2 "0402" H 15000 6800 60  0001 C CNN
 	1    15000 6800
 	1    0    0    -1  
 $EndComp
@@ -664,7 +664,7 @@ U 1 1 4C4183F2
 P 14300 6800
 F 0 "C32" H 14350 6900 50  0000 L CNN
 F 1 "100nF" H 14350 6700 50  0000 L CNN
-F 2 "SM0402" H 14300 6800 60  0001 C CNN
+F 2 "0402" H 14300 6800 60  0001 C CNN
 	1    14300 6800
 	1    0    0    -1  
 $EndComp
@@ -851,7 +851,7 @@ U 1 1 4C409062
 P 2600 5900
 F 0 "R16" V 2680 5900 50  0000 C CNN
 F 1 "1M" V 2600 5900 50  0000 C CNN
-F 2 "SM0402" H 2600 5900 60  0001 C CNN
+F 2 "0402" H 2600 5900 60  0001 C CNN
 	1    2600 5900
 	-1   0    0    1   
 $EndComp
@@ -861,7 +861,7 @@ U 1 1 4C3DDF65
 P 15250 8500
 F 0 "C18" H 15300 8600 50  0000 L CNN
 F 1 "100nF" H 15300 8400 50  0000 L CNN
-F 2 "SM0402" H 15250 8500 60  0001 C CNN
+F 2 "0402" H 15250 8500 60  0001 C CNN
 	1    15250 8500
 	1    0    0    -1  
 $EndComp
@@ -890,7 +890,7 @@ U 1 1 4C3F10FC
 P 12700 1550
 F 0 "R15" V 12780 1550 50  0000 C CNN
 F 1 "220" V 12700 1550 50  0000 C CNN
-F 2 "SM0402" H 12700 1550 60  0001 C CNN
+F 2 "0402" H 12700 1550 60  0001 C CNN
 	1    12700 1550
 	-1   0    0    1   
 $EndComp
@@ -953,7 +953,7 @@ U 1 1 4C3F0CA1
 P 2400 9200
 F 0 "R13" V 2480 9200 50  0000 C CNN
 F 1 "10k" V 2400 9200 50  0000 C CNN
-F 2 "SM0402" H 2400 9200 60  0001 C CNN
+F 2 "0402" H 2400 9200 60  0001 C CNN
 	1    2400 9200
 	-1   0    0    1   
 $EndComp
@@ -963,7 +963,7 @@ U 1 1 4C3F0C9B
 P 2200 9200
 F 0 "R12" V 2280 9200 50  0000 C CNN
 F 1 "10k" V 2200 9200 50  0000 C CNN
-F 2 "SM0402" H 2200 9200 60  0001 C CNN
+F 2 "0402" H 2200 9200 60  0001 C CNN
 	1    2200 9200
 	-1   0    0    1   
 $EndComp
@@ -1009,7 +1009,7 @@ U 1 1 4C3F09B7
 P 5800 2650
 F 0 "FB2" H 5650 2800 60  0000 C CNN
 F 1 "FILTER" H 5950 2800 60  0000 C CNN
-F 2 "SM0402" H 5800 2650 60  0001 C CNN
+F 2 "0402" H 5800 2650 60  0001 C CNN
 	1    5800 2650
 	1    0    0    -1  
 $EndComp
@@ -1019,7 +1019,7 @@ U 1 1 4C3F09AA
 P 7300 3200
 F 0 "C30" H 7350 3300 50  0000 L CNN
 F 1 "100nF" H 7350 3100 50  0000 L CNN
-F 2 "SM0402" H 7300 3200 60  0001 C CNN
+F 2 "0402" H 7300 3200 60  0001 C CNN
 	1    7300 3200
 	1    0    0    -1  
 $EndComp
@@ -1047,7 +1047,7 @@ U 1 1 4C3F0974
 P 6950 3200
 F 0 "C29" H 7000 3300 50  0000 L CNN
 F 1 "4.7uF" H 7000 3100 50  0000 L CNN
-F 2 "SM0603" H 6950 3200 60  0001 C CNN
+F 2 "0603" H 6950 3200 60  0001 C CNN
 	1    6950 3200
 	1    0    0    -1  
 $EndComp
@@ -1066,7 +1066,7 @@ U 1 1 4C3F0949
 P 6600 3200
 F 0 "C28" H 6650 3300 50  0000 L CNN
 F 1 "100nF" H 6650 3100 50  0000 L CNN
-F 2 "SM0402" H 6600 3200 60  0001 C CNN
+F 2 "0402" H 6600 3200 60  0001 C CNN
 	1    6600 3200
 	1    0    0    -1  
 $EndComp
@@ -1076,7 +1076,7 @@ U 1 1 4C3F093E
 P 6250 3200
 F 0 "C27" H 6300 3300 50  0000 L CNN
 F 1 "4.7uF" H 6300 3100 50  0000 L CNN
-F 2 "SM0603" H 6250 3200 60  0001 C CNN
+F 2 "0603" H 6250 3200 60  0001 C CNN
 	1    6250 3200
 	1    0    0    -1  
 $EndComp
@@ -1095,7 +1095,7 @@ U 1 1 4C3F0927
 P 5800 2900
 F 0 "FB3" H 5650 2750 60  0000 C CNN
 F 1 "FILTER" H 5950 2750 60  0000 C CNN
-F 2 "SM0402" H 5800 2900 60  0001 C CNN
+F 2 "0402" H 5800 2900 60  0001 C CNN
 	1    5800 2900
 	1    0    0    -1  
 $EndComp
@@ -1132,7 +1132,7 @@ U 1 1 4C3F085B
 P 7200 4450
 F 0 "R14" V 7280 4450 50  0000 C CNN
 F 1 "12k" V 7200 4450 50  0000 C CNN
-F 2 "SM0402" H 7200 4450 60  0001 C CNN
+F 2 "0402" H 7200 4450 60  0001 C CNN
 	1    7200 4450
 	0    1    1    0   
 $EndComp
@@ -1160,7 +1160,7 @@ U 1 1 4C3F076E
 P 2750 7750
 F 0 "C22" H 2800 7850 50  0000 L CNN
 F 1 "100nF" H 2800 7650 50  0000 L CNN
-F 2 "SM0402" H 2750 7750 60  0001 C CNN
+F 2 "0402" H 2750 7750 60  0001 C CNN
 	1    2750 7750
 	1    0    0    -1  
 $EndComp
@@ -1188,7 +1188,7 @@ U 1 1 4C3F0761
 P 2400 7750
 F 0 "C21" H 2450 7850 50  0000 L CNN
 F 1 "100nF" H 2450 7650 50  0000 L CNN
-F 2 "SM0402" H 2400 7750 60  0001 C CNN
+F 2 "0402" H 2400 7750 60  0001 C CNN
 	1    2400 7750
 	1    0    0    -1  
 $EndComp
@@ -1216,7 +1216,7 @@ U 1 1 4C3F0749
 P 2050 7750
 F 0 "C20" H 2100 7850 50  0000 L CNN
 F 1 "100nF" H 2100 7650 50  0000 L CNN
-F 2 "SM0402" H 2050 7750 60  0001 C CNN
+F 2 "0402" H 2050 7750 60  0001 C CNN
 	1    2050 7750
 	1    0    0    -1  
 $EndComp
@@ -1244,7 +1244,7 @@ U 1 1 4C3F0733
 P 3800 7750
 F 0 "C25" H 3850 7850 50  0000 L CNN
 F 1 "100nF" H 3850 7650 50  0000 L CNN
-F 2 "SM0402" H 3800 7750 60  0001 C CNN
+F 2 "0402" H 3800 7750 60  0001 C CNN
 	1    3800 7750
 	1    0    0    -1  
 $EndComp
@@ -1272,7 +1272,7 @@ U 1 1 4C3F0730
 P 4150 7750
 F 0 "C26" H 4200 7850 50  0000 L CNN
 F 1 "100nF" H 4200 7650 50  0000 L CNN
-F 2 "SM0402" H 4150 7750 60  0001 C CNN
+F 2 "0402" H 4150 7750 60  0001 C CNN
 	1    4150 7750
 	1    0    0    -1  
 $EndComp
@@ -1300,7 +1300,7 @@ U 1 1 4C3F0726
 P 3450 7750
 F 0 "C24" H 3500 7850 50  0000 L CNN
 F 1 "100nF" H 3500 7650 50  0000 L CNN
-F 2 "SM0402" H 3450 7750 60  0001 C CNN
+F 2 "0402" H 3450 7750 60  0001 C CNN
 	1    3450 7750
 	1    0    0    -1  
 $EndComp
@@ -1328,7 +1328,7 @@ U 1 1 4C3F071D
 P 3100 7750
 F 0 "C23" H 3150 7850 50  0000 L CNN
 F 1 "100nF" H 3150 7650 50  0000 L CNN
-F 2 "SM0402" H 3100 7750 60  0001 C CNN
+F 2 "0402" H 3100 7750 60  0001 C CNN
 	1    3100 7750
 	1    0    0    -1  
 $EndComp
@@ -1365,7 +1365,7 @@ U 1 1 4C3F0517
 P 1700 7750
 F 0 "C19" H 1750 7850 50  0000 L CNN
 F 1 "3.3uF" H 1750 7650 50  0000 L CNN
-F 2 "SM0603" H 1700 7750 60  0001 C CNN
+F 2 "0603" H 1700 7750 60  0001 C CNN
 	1    1700 7750
 	1    0    0    -1  
 $EndComp
@@ -1425,7 +1425,7 @@ U 1 1 4C3DDF67
 P 14950 8500
 F 0 "C17" H 15000 8600 50  0000 L CNN
 F 1 "10uF" H 15000 8400 50  0000 L CNN
-F 2 "SM0603" H 14950 8500 60  0001 C CNN
+F 2 "0603" H 14950 8500 60  0001 C CNN
 	1    14950 8500
 	1    0    0    -1  
 $EndComp
@@ -1474,7 +1474,7 @@ U 1 1 4C3DDBB8
 P 12450 4300
 F 0 "C13" H 12500 4400 50  0000 L CNN
 F 1 "100nF" H 12500 4200 50  0000 L CNN
-F 2 "SM0402" H 12450 4300 60  0001 C CNN
+F 2 "0402" H 12450 4300 60  0001 C CNN
 	1    12450 4300
 	1    0    0    -1  
 $EndComp
@@ -1493,7 +1493,7 @@ U 1 1 4C3DDBB6
 P 12150 4300
 F 0 "C12" H 12200 4400 50  0000 L CNN
 F 1 "10uF" H 12200 4200 50  0000 L CNN
-F 2 "SM0603" H 12150 4300 60  0001 C CNN
+F 2 "0603" H 12150 4300 60  0001 C CNN
 	1    12150 4300
 	1    0    0    -1  
 $EndComp
@@ -1503,7 +1503,7 @@ U 1 1 4C3DDB8C
 P 14500 4300
 F 0 "C14" H 14550 4400 50  0000 L CNN
 F 1 "2.2uF" H 14550 4200 50  0000 L CNN
-F 2 "SM0402" H 14500 4300 60  0001 C CNN
+F 2 "0402" H 14500 4300 60  0001 C CNN
 	1    14500 4300
 	1    0    0    -1  
 $EndComp
@@ -1522,7 +1522,7 @@ U 1 1 4C3DDB88
 P 14800 4300
 F 0 "C15" H 14850 4400 50  0000 L CNN
 F 1 "100nF" H 14850 4200 50  0000 L CNN
-F 2 "SM0402" H 14800 4300 60  0001 C CNN
+F 2 "0402" H 14800 4300 60  0001 C CNN
 	1    14800 4300
 	1    0    0    -1  
 $EndComp
@@ -1611,7 +1611,7 @@ U 1 1 4C3DCE45
 P 2000 9200
 F 0 "R1" V 2080 9200 50  0000 C CNN
 F 1 "10k" V 2000 9200 50  0000 C CNN
-F 2 "SM0402" H 2000 9200 60  0001 C CNN
+F 2 "0402" H 2000 9200 60  0001 C CNN
 	1    2000 9200
 	-1   0    0    1   
 $EndComp
@@ -1621,7 +1621,7 @@ U 1 1 4C3D91F6
 P 10300 6900
 F 0 "R7" V 10380 6900 50  0000 C CNN
 F 1 "220" V 10300 6900 50  0000 C CNN
-F 2 "SM0402" H 10300 6900 60  0001 C CNN
+F 2 "0402" H 10300 6900 60  0001 C CNN
 	1    10300 6900
 	-1   0    0    1   
 $EndComp
@@ -1631,7 +1631,7 @@ U 1 1 4C3D91F5
 P 10600 6900
 F 0 "R9" V 10680 6900 50  0000 C CNN
 F 1 "220" V 10600 6900 50  0000 C CNN
-F 2 "SM0402" H 10600 6900 60  0001 C CNN
+F 2 "0402" H 10600 6900 60  0001 C CNN
 	1    10600 6900
 	-1   0    0    1   
 $EndComp
@@ -1671,7 +1671,7 @@ U 1 1 4C3D8DA6
 P 4700 9750
 F 0 "C10" H 4750 9850 50  0000 L CNN
 F 1 "100nF" H 4750 9650 50  0000 L CNN
-F 2 "SM0402" H 4700 9750 60  0001 C CNN
+F 2 "0402" H 4700 9750 60  0001 C CNN
 	1    4700 9750
 	1    0    0    -1  
 $EndComp
@@ -1683,7 +1683,7 @@ U 1 1 4C3D885F
 P 2300 9800
 F 0 "R2" V 2150 9850 50  0000 C CNN
 F 1 "2k2" V 2300 9800 50  0000 C CNN
-F 2 "SM0402" H 2300 9800 60  0001 C CNN
+F 2 "0402" H 2300 9800 60  0001 C CNN
 	1    2300 9800
 	0    -1   -1   0   
 $EndComp
@@ -1749,7 +1749,7 @@ U 1 1 4C3D82D1
 P 7200 4650
 F 0 "R6" V 7280 4650 50  0000 C CNN
 F 1 "1k" V 7200 4650 50  0000 C CNN
-F 2 "SM0402" H 7200 4650 60  0001 C CNN
+F 2 "0402" H 7200 4650 60  0001 C CNN
 	1    7200 4650
 	0    1    1    0   
 $EndComp
@@ -1759,7 +1759,7 @@ U 1 1 4C3D7B71
 P 3050 4700
 F 0 "FB1" H 2900 4850 60  0000 C CNN
 F 1 "FILTER" H 3300 4850 60  0000 C CNN
-F 2 "SM0402" H 3050 4700 60  0001 C CNN
+F 2 "0402" H 3050 4700 60  0001 C CNN
 	1    3050 4700
 	1    0    0    -1  
 $EndComp
@@ -1796,7 +1796,7 @@ U 1 1 4C3D7994
 P 3300 5200
 F 0 "C2" H 3350 5300 50  0000 L CNN
 F 1 "47pF" H 3350 5100 50  0000 L CNN
-F 2 "SM0402" H 3300 5200 60  0001 C CNN
+F 2 "0402" H 3300 5200 60  0001 C CNN
 	1    3300 5200
 	1    0    0    -1  
 $EndComp
@@ -1806,7 +1806,7 @@ U 1 1 4C3D798B
 P 3550 5200
 F 0 "C4" H 3600 5300 50  0000 L CNN
 F 1 "47pF" H 3600 5100 50  0000 L CNN
-F 2 "SM0402" H 3550 5200 60  0001 C CNN
+F 2 "0402" H 3550 5200 60  0001 C CNN
 	1    3550 5200
 	1    0    0    -1  
 $EndComp
@@ -1845,7 +1845,7 @@ U 1 1 4C3D77A7
 P 7200 7150
 F 0 "C3" H 7250 7250 50  0000 L CNN
 F 1 "33pF" H 7250 7050 50  0000 L CNN
-F 2 "SM0402" H 7200 7150 60  0001 C CNN
+F 2 "0402" H 7200 7150 60  0001 C CNN
 	1    7200 7150
 	1    0    0    -1  
 $EndComp
@@ -1855,7 +1855,7 @@ U 1 1 4C3D77A1
 P 6350 7150
 F 0 "C1" H 6400 7250 50  0000 L CNN
 F 1 "33pF" H 6400 7050 50  0000 L CNN
-F 2 "SM0402" H 6350 7150 60  0001 C CNN
+F 2 "0402" H 6350 7150 60  0001 C CNN
 	1    6350 7150
 	1    0    0    -1  
 $EndComp
@@ -1865,7 +1865,7 @@ U 1 1 4C3D742D
 P 3950 4800
 F 0 "R4" V 3850 4800 50  0000 C CNN
 F 1 "22" V 3950 4800 50  0000 C CNN
-F 2 "SM0402" H 3950 4800 60  0001 C CNN
+F 2 "0402" H 3950 4800 60  0001 C CNN
 	1    3950 4800
 	0    1    1    0   
 $EndComp
@@ -1875,7 +1875,7 @@ U 1 1 4C3D741E
 P 3950 4900
 F 0 "R3" V 4030 4900 50  0000 C CNN
 F 1 "22" V 3950 4900 50  0000 C CNN
-F 2 "SM0402" H 3950 4900 60  0001 C CNN
+F 2 "0402" H 3950 4900 60  0001 C CNN
 	1    3950 4900
 	0    1    1    0   
 $EndComp