ubb-la/hw/: proof-of-concept passive LA adapter board

Note that the pull-ups on DAT1 through DAT3 and the pull-whichever-way on
DAT0 are likely to get in the way of any real-life use. But it's good enough
for exploring the system's characteristics and limitations.

ubb-la/hw/Makefile

@@ -0,0 +1,10 @@
+NAME = ubb-la
+
+.PHONY:		all sch
+
+all:
+		@echo "make what ? target: sch"
+		@exit 1
+
+sch:
+		eeschema `pwd`/$(NAME).sch

ubb-la/hw/ubb-la.pro

@@ -0,0 +1,18 @@
+update=Fri Jan  4 14:45:11 2013
+last_client=eeschema
+[eeschema]
+version=1
+LibDir=../../../kicad-libs/components
+NetFmtName=
+HPGLSpd=20
+HPGLDm=15
+HPGLNum=1
+RptD_X=0
+RptD_Y=100
+RptLab=1
+LabSize=60
+[eeschema/libraries]
+LibName1=pwr
+LibName2=r
+LibName3=8_10-card
+LibName4=conn

ubb-la/hw/ubb-la.sch

@@ -0,0 +1,152 @@
+EESchema Schematic File Version 2  date Sun Jan 20 10:38:03 2013
+LIBS:pwr
+LIBS:r
+LIBS:8_10-card
+LIBS:conn
+EELAYER 25  0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date "20 jan 2013"
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L 8:10-CARD P1
+U 1 1 50E715C3
+P 8100 3400
+F 0 "P1" H 7900 3950 60  0000 C CNN
+F 1 "8:10-CARD" H 8150 2800 60  0000 C CNN
+	1    8100 3400
+	1    0    0    -1  
+$EndComp
+$Comp
+L CONN_4 P2
+U 1 1 50EABCA4
+P 3050 3250
+F 0 "P2" V 3000 3250 50  0000 C CNN
+F 1 "CONN_4" V 3100 3250 50  0000 C CNN
+	1    3050 3250
+	-1   0    0    -1  
+$EndComp
+$Comp
+L GND #PWR01
+U 1 1 50EABCDB
+P 7600 4100
+F 0 "#PWR01" H 7600 4100 30  0001 C CNN
+F 1 "GND" H 7600 4030 30  0001 C CNN
+	1    7600 4100
+	1    0    0    -1  
+$EndComp
+Text Label 3600 3100 0    60   ~ 0
+CH2
+Text Label 3600 3200 0    60   ~ 0
+CH3
+Text Label 3600 3300 0    60   ~ 0
+CH0
+Text Label 3600 3400 0    60   ~ 0
+CH1
+$Comp
+L CONN_1 P3
+U 1 1 50EABD9A
+P 3250 3700
+F 0 "P3" H 3330 3700 40  0000 L CNN
+F 1 "CONN_1" H 3250 3755 30  0001 C CNN
+	1    3250 3700
+	-1   0    0    1   
+$EndComp
+$Comp
+L CONN_1 P4
+U 1 1 50EABDA9
+P 3250 3900
+F 0 "P4" H 3330 3900 40  0000 L CNN
+F 1 "CONN_1" H 3250 3955 30  0001 C CNN
+	1    3250 3900
+	-1   0    0    1   
+$EndComp
+$Comp
+L GND #PWR02
+U 1 1 50EABDD5
+P 5600 4100
+F 0 "#PWR02" H 5600 4100 30  0001 C CNN
+F 1 "GND" H 5600 4030 30  0001 C CNN
+	1    5600 4100
+	1    0    0    -1  
+$EndComp
+Text Label 3600 3700 0    60   ~ 0
+TRIGGER/CLK
+Text Label 3600 3900 0    60   ~ 0
+GND
+NoConn ~ 7800 3400
+$Comp
+L R R2
+U 1 1 50FBF221
+P 6250 3700
+F 0 "R2" V 6350 3800 60  0000 C CNN
+F 1 "1k" V 6250 3700 50  0000 C CNN
+	1    6250 3700
+	0    -1   -1   0   
+$EndComp
+$Comp
+L R R1
+U 1 1 50FBF25B
+P 7150 3400
+F 0 "R1" V 7250 3500 60  0000 C CNN
+F 1 "100" V 7150 3400 50  0000 C CNN
+	1    7150 3400
+	0    -1   -1   0   
+$EndComp
+Wire Wire Line
+	7800 3100 3400 3100
+Wire Wire Line
+	7800 3200 3400 3200
+Wire Wire Line
+	5800 3700 5800 3300
+Wire Wire Line
+	5800 3300 3400 3300
+Wire Wire Line
+	7800 3800 5700 3800
+Wire Wire Line
+	5700 3800 5700 3400
+Wire Wire Line
+	5700 3400 3400 3400
+Wire Wire Line
+	7600 4100 7600 3600
+Wire Wire Line
+	7600 3600 7800 3600
+Wire Wire Line
+	7800 3500 5200 3500
+Wire Wire Line
+	5200 3500 5200 3700
+Wire Wire Line
+	5200 3700 3400 3700
+Wire Wire Line
+	3400 3900 5600 3900
+Wire Wire Line
+	5600 3900 5600 4100
+Wire Wire Line
+	7800 3300 7600 3300
+Wire Wire Line
+	7600 3300 7600 3400
+Wire Wire Line
+	7600 3400 7400 3400
+Wire Wire Line
+	6500 3700 7800 3700
+Wire Wire Line
+	5800 3700 6000 3700
+Wire Wire Line
+	6900 3400 6700 3400
+Wire Wire Line
+	6700 3400 6700 3700
+Connection ~ 6700 3700
+Text Notes 6200 4700 0    60   ~ 0
+R1: force DAT0 down for start bit
+Text Notes 6200 4800 0    60   ~ 0
+R2: limit effect of R1 on DUT
+$EndSCHEMATC