1.1 --- a/AcornElectronMainboard.sch Sat Feb 12 19:35:41 2022 +0100
1.2 +++ b/AcornElectronMainboard.sch Thu Feb 24 18:52:07 2022 +0100
1.3 @@ -253,15 +253,15 @@
1.4 Text GLabel 3700 8800 2 50 Output ~ 0
1.5 5V
1.6 Wire Wire Line
1.7 - 1600 8800 2200 8800
1.8 + 1600 8800 2100 8800
1.9 Text GLabel 3700 9300 2 50 Output ~ 0
1.10 0V
1.11 Text GLabel 3700 9800 2 50 Output ~ 0
1.12 -5V
1.13 Wire Wire Line
1.14 - 1900 9300 2100 9300
1.15 + 1900 9300 2000 9300
1.16 Wire Wire Line
1.17 - 1800 9800 2100 9800
1.18 + 1800 9800 2000 9800
1.19 Text GLabel 3800 7100 3 50 Input ~ 0
1.20 0V
1.21 Wire Wire Line
1.22 @@ -316,7 +316,7 @@
1.23 U 1 1 61FBBBB4
1.24 P 3350 1250
1.25 F 0 "C27" H 3250 1300 50 0000 R CNN
1.26 -F 1 "10µF" H 3250 1200 50 0000 R CNN
1.27 +F 1 "10µF/TANT" H 3250 1200 38 0000 R CNN
1.28 F 2 "" H 3388 1100 50 0001 C CNN
1.29 F 3 "~" H 3350 1250 50 0001 C CNN
1.30 1 3350 1250
1.31 @@ -357,23 +357,23 @@
1.32 $Comp
1.33 L Device:CP C1
1.34 U 1 1 62245FAE
1.35 -P 2200 9050
1.36 -F 0 "C1" H 2318 9096 50 0000 L CNN
1.37 -F 1 "47µF" H 2318 9005 50 0000 L CNN
1.38 -F 2 "" H 2238 8900 50 0001 C CNN
1.39 -F 3 "~" H 2200 9050 50 0001 C CNN
1.40 - 1 2200 9050
1.41 +P 2100 9050
1.42 +F 0 "C1" H 2218 9096 50 0000 L CNN
1.43 +F 1 "47µF/16V" H 2218 9005 38 0000 L CNN
1.44 +F 2 "" H 2138 8900 50 0001 C CNN
1.45 +F 3 "~" H 2100 9050 50 0001 C CNN
1.46 + 1 2100 9050
1.47 1 0 0 -1
1.48 $EndComp
1.49 $Comp
1.50 L Device:CP C2
1.51 U 1 1 62245FF4
1.52 -P 2100 9550
1.53 -F 0 "C2" H 2218 9596 50 0000 L CNN
1.54 -F 1 "10µF" H 2218 9505 50 0000 L CNN
1.55 -F 2 "" H 2138 9400 50 0001 C CNN
1.56 -F 3 "~" H 2100 9550 50 0001 C CNN
1.57 - 1 2100 9550
1.58 +P 2000 9550
1.59 +F 0 "C2" H 2118 9596 50 0000 L CNN
1.60 +F 1 "10µF/16V" H 2118 9505 38 0000 L CNN
1.61 +F 2 "" H 2038 9400 50 0001 C CNN
1.62 +F 3 "~" H 2000 9550 50 0001 C CNN
1.63 + 1 2000 9550
1.64 1 0 0 -1
1.65 $EndComp
1.66 Wire Wire Line
1.67 @@ -383,25 +383,25 @@
1.68 Wire Wire Line
1.69 1800 9800 1800 9000
1.70 Wire Wire Line
1.71 - 2200 8900 2200 8800
1.72 -Connection ~ 2200 8800
1.73 + 2100 8900 2100 8800
1.74 +Connection ~ 2100 8800
1.75 +Wire Wire Line
1.76 + 2100 8800 2700 8800
1.77 Wire Wire Line
1.78 - 2200 8800 2700 8800
1.79 + 2000 9400 2000 9300
1.80 +Connection ~ 2000 9300
1.81 Wire Wire Line
1.82 - 2100 9400 2100 9300
1.83 + 2000 9300 2100 9300
1.84 +Wire Wire Line
1.85 + 2100 9200 2100 9300
1.86 Connection ~ 2100 9300
1.87 Wire Wire Line
1.88 - 2100 9300 2200 9300
1.89 -Wire Wire Line
1.90 - 2200 9200 2200 9300
1.91 -Connection ~ 2200 9300
1.92 + 2100 9300 2600 9300
1.93 Wire Wire Line
1.94 - 2200 9300 2600 9300
1.95 + 2000 9700 2000 9800
1.96 +Connection ~ 2000 9800
1.97 Wire Wire Line
1.98 - 2100 9700 2100 9800
1.99 -Connection ~ 2100 9800
1.100 -Wire Wire Line
1.101 - 2100 9800 2600 9800
1.102 + 2000 9800 2600 9800
1.103 Wire Wire Line
1.104 2600 9800 2600 9700
1.105 Connection ~ 2600 9800
1.106 @@ -615,7 +615,7 @@
1.107 U 1 1 621AE941
1.108 P 6050 5500
1.109 F 0 "C9" V 5798 5500 50 0000 C CNN
1.110 -F 1 "1µF" V 5889 5500 50 0000 C CNN
1.111 +F 1 "1µF/35V/TANT" V 5889 5500 38 0000 C CNN
1.112 F 2 "" H 6088 5350 50 0001 C CNN
1.113 F 3 "~" H 6050 5500 50 0001 C CNN
1.114 1 6050 5500
2.1 --- a/CPU_ROM_KBD.sch Sat Feb 12 19:35:41 2022 +0100
2.2 +++ b/CPU_ROM_KBD.sch Thu Feb 24 18:52:07 2022 +0100
2.3 @@ -784,20 +784,20 @@
2.4 $EndComp
2.5 Wire Wire Line
2.6 8900 3300 8500 3300
2.7 -Wire Bus Line
2.8 - 4400 1600 4400 4500
2.9 +Text Notes 8900 3600 0 50 ~ 0
2.10 +Diode added to satisfy KiCad\nelectrical rules check.
2.11 Wire Bus Line
2.12 - 2100 1600 2100 4200
2.13 + 2200 1500 6800 1500
2.14 Wire Bus Line
2.15 - 2500 1600 2500 4500
2.16 + 2000 1100 2000 2800
2.17 Wire Bus Line
2.18 4000 3800 4000 6100
2.19 Wire Bus Line
2.20 6700 3300 6700 6100
2.21 Wire Bus Line
2.22 - 2000 1100 2000 2800
2.23 + 2500 1600 2500 4500
2.24 Wire Bus Line
2.25 - 2200 1500 6800 1500
2.26 -Text Notes 8900 3600 0 50 ~ 0
2.27 -Diode added to satisfy KiCad\nelectrical rules check.
2.28 + 2100 1600 2100 4200
2.29 +Wire Bus Line
2.30 + 4400 1600 4400 4500
2.31 $EndSCHEMATC
3.1 --- a/UHF.sch Sat Feb 12 19:35:41 2022 +0100
3.2 +++ b/UHF.sch Thu Feb 24 18:52:07 2022 +0100
3.3 @@ -20,7 +20,7 @@
3.4 GREEN
3.5 Text GLabel 2200 2900 0 50 Input ~ 0
3.6 RED
3.7 -Text GLabel 2700 6100 0 50 Input ~ 0
3.8 +Text GLabel 2400 6500 0 50 Input ~ 0
3.9 ~HS
3.10 Text GLabel 1700 5000 0 50 Input ~ 0
3.11 CLOCK_VIDEO
3.12 @@ -66,14 +66,14 @@
3.13 $Comp
3.14 L 74xx:74LS74 IC12
3.15 U 1 1 61DD898C
3.16 -P 3400 6100
3.17 +P 3100 6500
3.18 AR Path="/61DB955D/61DF7FF4/61DD898C" Ref="IC12" Part="1"
3.19 AR Path="/62411C42/61DD898C" Ref="IC12" Part="1"
3.20 -F 0 "IC12" H 3600 6500 50 0000 C CNN
3.21 -F 1 "74LS74" H 3600 6400 50 0000 C CNN
3.22 -F 2 "" H 3400 6100 50 0001 C CNN
3.23 -F 3 "74xx/74hc_hct74.pdf" H 3400 6100 50 0001 C CNN
3.24 - 1 3400 6100
3.25 +F 0 "IC12" H 3300 6900 50 0000 C CNN
3.26 +F 1 "74LS74" H 3300 6800 50 0000 C CNN
3.27 +F 2 "" H 3100 6500 50 0001 C CNN
3.28 +F 3 "74xx/74hc_hct74.pdf" H 3100 6500 50 0001 C CNN
3.29 + 1 3100 6500
3.30 1 0 0 -1
3.31 $EndComp
3.32 $Comp
3.33 @@ -148,13 +148,13 @@
3.34 Wire Wire Line
3.35 3400 5400 3400 5300
3.36 Wire Wire Line
3.37 - 2700 6100 2900 6100
3.38 -Text GLabel 3400 5700 1 50 Input ~ 0
3.39 + 2400 6500 2600 6500
3.40 +Text GLabel 3100 6100 1 50 Input ~ 0
3.41 5V
3.42 -Text GLabel 3300 6500 0 50 Input ~ 0
3.43 +Text GLabel 3000 6900 0 50 Input ~ 0
3.44 5V
3.45 Wire Wire Line
3.46 - 3400 5800 3400 5700
3.47 + 3100 6200 3100 6100
3.48 Text GLabel 4500 5800 1 50 Input ~ 0
3.49 5V
3.50 Wire Wire Line
3.51 @@ -166,14 +166,14 @@
3.52 Wire Wire Line
3.53 4100 6100 4200 6100
3.54 Wire Wire Line
3.55 - 2900 6100 2900 6700
3.56 + 2600 6500 2600 7100
3.57 Wire Wire Line
3.58 - 2900 6700 4100 6700
3.59 + 2600 7100 4100 7100
3.60 Wire Wire Line
3.61 4100 6200 4200 6200
3.62 -Connection ~ 2900 6100
3.63 +Connection ~ 2600 6500
3.64 Wire Wire Line
3.65 - 2900 6100 3100 6100
3.66 + 2600 6500 2800 6500
3.67 $Comp
3.68 L 74xx:74LS86 IC14
3.69 U 1 1 61E1F285
3.70 @@ -188,29 +188,27 @@
3.71 1 0 0 -1
3.72 $EndComp
3.73 Wire Wire Line
3.74 - 4100 6700 4100 6200
3.75 + 4100 7100 4100 6200
3.76 Wire Wire Line
3.77 - 3300 6500 3400 6500
3.78 + 3000 6900 3100 6900
3.79 Wire Wire Line
3.80 - 3400 6500 3400 6400
3.81 + 3100 6900 3100 6800
3.82 Wire Wire Line
3.83 3700 5100 4000 5100
3.84 Wire Wire Line
3.85 - 3700 6200 3800 6200
3.86 -Wire Wire Line
3.87 - 3800 6200 3800 6600
3.88 + 3400 6600 3500 6600
3.89 Wire Wire Line
3.90 - 3800 6600 3000 6600
3.91 + 3500 6600 3500 7000
3.92 Wire Wire Line
3.93 - 3000 6600 3000 6000
3.94 + 3500 7000 2700 7000
3.95 Wire Wire Line
3.96 - 3000 6000 3100 6000
3.97 + 2700 7000 2700 6400
3.98 Wire Wire Line
3.99 - 3700 6000 3800 6000
3.100 + 2700 6400 2800 6400
3.101 Wire Wire Line
3.102 - 3800 6000 3800 5300
3.103 + 3400 6400 3600 6400
3.104 Wire Wire Line
3.105 - 3800 5300 4000 5300
3.106 + 3850 5300 4000 5300
3.107 Text GLabel 1200 6200 1 50 Input ~ 0
3.108 5V
3.109 Text GLabel 800 5300 1 50 Input ~ 0
3.110 @@ -530,14 +528,14 @@
3.111 $Comp
3.112 L Device:R R50
3.113 U 1 1 61E6659B
3.114 -P 7850 2500
3.115 +P 8150 2500
3.116 AR Path="/61DB955D/61DF7FF4/61E6659B" Ref="R50" Part="1"
3.117 AR Path="/62411C42/61E6659B" Ref="R50" Part="1"
3.118 -F 0 "R50" V 7750 2500 50 0000 C CNN
3.119 -F 1 "820R" V 7950 2500 50 0000 C CNN
3.120 -F 2 "" V 7780 2500 50 0001 C CNN
3.121 -F 3 "~" H 7850 2500 50 0001 C CNN
3.122 - 1 7850 2500
3.123 +F 0 "R50" V 8050 2500 50 0000 C CNN
3.124 +F 1 "820R" V 8250 2500 50 0000 C CNN
3.125 +F 2 "" V 8080 2500 50 0001 C CNN
3.126 +F 3 "~" H 8150 2500 50 0001 C CNN
3.127 + 1 8150 2500
3.128 0 1 1 0
3.129 $EndComp
3.130 $Comp
3.131 @@ -636,7 +634,7 @@
3.132 Wire Wire Line
3.133 6900 3000 6900 2500
3.134 Wire Wire Line
3.135 - 6900 2500 7700 2500
3.136 + 6900 2500 8000 2500
3.137 Connection ~ 6600 3000
3.138 Wire Wire Line
3.139 7800 3000 8000 3000
3.140 @@ -701,7 +699,7 @@
3.141 8500 3000 8500 3500
3.142 Connection ~ 8500 3500
3.143 Wire Wire Line
3.144 - 8000 2500 8500 2500
3.145 + 8300 2500 8500 2500
3.146 Wire Wire Line
3.147 8500 2500 8500 3000
3.148 Connection ~ 8500 3000
3.149 @@ -921,8 +919,8 @@
3.150 P 9500 2650
3.151 AR Path="/61DB955D/61DF7FF4/620BD8BB" Ref="C21" Part="1"
3.152 AR Path="/62411C42/620BD8BB" Ref="C21" Part="1"
3.153 -F 0 "C21" H 9400 2600 50 0000 R CNN
3.154 -F 1 "47pF" H 9400 2700 50 0000 R CNN
3.155 +F 0 "C21" H 9600 2600 50 0000 L CNN
3.156 +F 1 "47pF" H 9600 2700 50 0000 L CNN
3.157 F 2 "" H 9538 2500 50 0001 C CNN
3.158 F 3 "~" H 9500 2650 50 0001 C CNN
3.159 1 9500 2650
3.160 @@ -933,7 +931,7 @@
3.161 Wire Wire Line
3.162 9400 3600 9500 3600
3.163 Wire Wire Line
3.164 - 9500 3600 9500 3300
3.165 + 9500 3600 9500 3500
3.166 Text GLabel 8900 3500 1 50 Input ~ 0
3.167 5V
3.168 Wire Wire Line
3.169 @@ -963,71 +961,58 @@
3.170 8700 4400 9200 4400
3.171 Connection ~ 9200 4400
3.172 Wire Wire Line
3.173 - 9200 4400 9200 4100
3.174 + 9200 4400 9200 4300
3.175 $Comp
3.176 L Device:R R30
3.177 U 1 1 62144EE5
3.178 -P 9700 4350
3.179 +P 9700 4550
3.180 AR Path="/61DB955D/61DF7FF4/62144EE5" Ref="R30" Part="1"
3.181 AR Path="/62411C42/62144EE5" Ref="R30" Part="1"
3.182 -F 0 "R30" H 9770 4396 50 0000 L CNN
3.183 -F 1 "120000R" H 9770 4305 50 0000 L CNN
3.184 -F 2 "" V 9630 4350 50 0001 C CNN
3.185 -F 3 "~" H 9700 4350 50 0001 C CNN
3.186 - 1 9700 4350
3.187 +F 0 "R30" H 9770 4596 50 0000 L CNN
3.188 +F 1 "120000R" H 9770 4505 50 0000 L CNN
3.189 +F 2 "" V 9630 4550 50 0001 C CNN
3.190 +F 3 "~" H 9700 4550 50 0001 C CNN
3.191 + 1 9700 4550
3.192 1 0 0 -1
3.193 $EndComp
3.194 -Text GLabel 9700 4600 3 50 Input ~ 0
3.195 +Text GLabel 9700 4800 3 50 Input ~ 0
3.196 0V
3.197 Wire Wire Line
3.198 - 9700 4600 9700 4500
3.199 + 9700 4800 9700 4700
3.200 Wire Wire Line
3.201 - 9700 4200 9700 4100
3.202 + 9700 4400 9700 4300
3.203 Wire Wire Line
3.204 - 9700 4100 9200 4100
3.205 -Connection ~ 9200 4100
3.206 + 9700 4300 9200 4300
3.207 +Connection ~ 9200 4300
3.208 Wire Wire Line
3.209 - 9200 4100 9200 3900
3.210 + 9200 4300 9200 3900
3.211 $Comp
3.212 L Device:R R37
3.213 U 1 1 621794AB
3.214 -P 9700 3550
3.215 +P 9700 3750
3.216 AR Path="/61DB955D/61DF7FF4/621794AB" Ref="R37" Part="1"
3.217 AR Path="/62411C42/621794AB" Ref="R37" Part="1"
3.218 -F 0 "R37" H 9770 3596 50 0000 L CNN
3.219 -F 1 "1000R" H 9770 3505 50 0000 L CNN
3.220 -F 2 "" V 9630 3550 50 0001 C CNN
3.221 -F 3 "~" H 9700 3550 50 0001 C CNN
3.222 - 1 9700 3550
3.223 +F 0 "R37" H 9770 3796 50 0000 L CNN
3.224 +F 1 "1000R" H 9770 3705 50 0000 L CNN
3.225 +F 2 "" V 9630 3750 50 0001 C CNN
3.226 +F 3 "~" H 9700 3750 50 0001 C CNN
3.227 + 1 9700 3750
3.228 1 0 0 -1
3.229 $EndComp
3.230 -Text GLabel 9700 3800 3 50 Input ~ 0
3.231 +Text GLabel 9700 4000 3 50 Input ~ 0
3.232 0V
3.233 Wire Wire Line
3.234 - 9700 3800 9700 3700
3.235 + 9700 4000 9700 3900
3.236 Wire Wire Line
3.237 - 9700 3400 9700 3300
3.238 + 9700 3600 9700 3500
3.239 Wire Wire Line
3.240 - 9700 3300 9500 3300
3.241 + 9700 3500 9500 3500
3.242 Wire Wire Line
3.243 - 9500 3300 9500 3000
3.244 -Connection ~ 9500 3300
3.245 -$Comp
3.246 -L AcornElectron:UM1233-E36 SK4
3.247 -U 1 1 621B02BC
3.248 -P 10150 2150
3.249 -AR Path="/61DB955D/61DF7FF4/621B02BC" Ref="SK4" Part="1"
3.250 -AR Path="/62411C42/621B02BC" Ref="SK4" Part="1"
3.251 -F 0 "SK4" H 10577 2196 50 0000 L CNN
3.252 -F 1 "UM1233-E36" H 10577 2105 50 0000 L CNN
3.253 -F 2 "" H 10150 2350 50 0001 C CNN
3.254 -F 3 "" H 10150 2350 50 0001 C CNN
3.255 - 1 10150 2150
3.256 - 1 0 0 -1
3.257 -$EndComp
3.258 + 9500 3500 9500 3300
3.259 +Connection ~ 9500 3500
3.260 Wire Wire Line
3.261 - 9500 2100 9800 2100
3.262 -NoConn ~ 9800 2200
3.263 + 9500 2100 10050 2100
3.264 +NoConn ~ 10050 2200
3.265 $Comp
3.266 L Device:R R65
3.267 U 1 1 621D44B6
3.268 @@ -1042,7 +1027,7 @@
3.269 1 0 0 -1
3.270 $EndComp
3.271 Wire Wire Line
3.272 - 10150 1300 9700 1300
3.273 + 10400 1300 9700 1300
3.274 Wire Wire Line
3.275 9700 1300 9700 1200
3.276 Text GLabel 9700 800 1 50 Input ~ 0
3.277 @@ -1056,7 +1041,7 @@
3.278 AR Path="/61DB955D/61DF7FF4/621F95D7" Ref="C23" Part="1"
3.279 AR Path="/62411C42/621F95D7" Ref="C23" Part="1"
3.280 F 0 "C23" H 9318 1596 50 0000 L CNN
3.281 -F 1 "47µF" H 9318 1505 50 0000 L CNN
3.282 +F 1 "47µF/TANT" H 9318 1505 38 0000 L CNN
3.283 F 2 "" H 9238 1400 50 0001 C CNN
3.284 F 3 "~" H 9200 1550 50 0001 C CNN
3.285 1 9200 1550
3.286 @@ -1071,12 +1056,12 @@
3.287 Wire Wire Line
3.288 9200 1300 9700 1300
3.289 Connection ~ 9700 1300
3.290 -Text GLabel 10150 2700 3 50 Input ~ 0
3.291 +Text GLabel 10500 2700 2 50 Input ~ 0
3.292 0V
3.293 Wire Wire Line
3.294 - 10150 2700 10150 2600
3.295 + 10400 2700 10400 2600
3.296 Wire Wire Line
3.297 - 10150 1700 10150 1400
3.298 + 10400 1700 10400 1400
3.299 Connection ~ 9500 2100
3.300 $Comp
3.301 L Device:R R?
3.302 @@ -1440,39 +1425,137 @@
3.303 $Comp
3.304 L Device:C C17
3.305 U 1 1 6241CD4D
3.306 -P 10550 3000
3.307 -F 0 "C17" V 10298 3000 50 0000 C CNN
3.308 -F 1 "470pF" V 10389 3000 50 0000 C CNN
3.309 -F 2 "" H 10588 2850 50 0001 C CNN
3.310 -F 3 "~" H 10550 3000 50 0001 C CNN
3.311 - 1 10550 3000
3.312 +P 10550 3300
3.313 +F 0 "C17" V 10298 3300 50 0000 C CNN
3.314 +F 1 "470pF" V 10389 3300 50 0000 C CNN
3.315 +F 2 "" H 10588 3150 50 0001 C CNN
3.316 +F 3 "~" H 10550 3300 50 0001 C CNN
3.317 + 1 10550 3300
3.318 0 1 1 0
3.319 $EndComp
3.320 -Text GLabel 10800 3000 2 50 Output ~ 0
3.321 +Text GLabel 10800 3300 2 50 Output ~ 0
3.322 UHF_IN
3.323 Wire Wire Line
3.324 - 9500 3000 10400 3000
3.325 -Connection ~ 9500 3000
3.326 + 9500 3300 10400 3300
3.327 +Connection ~ 9500 3300
3.328 Wire Wire Line
3.329 - 9500 3000 9500 2800
3.330 + 9500 3300 9500 2800
3.331 Wire Wire Line
3.332 - 10700 3000 10800 3000
3.333 -Text Notes 9900 3200 0 50 ~ 0
3.334 + 10700 3300 10800 3300
3.335 +Text Notes 9900 3500 0 50 ~ 0
3.336 For optional link to SK3 circuit.
3.337 $Comp
3.338 L power:PWR_FLAG #FLG0109
3.339 U 1 1 62024BC2
3.340 -P 10150 1400
3.341 -F 0 "#FLG0109" H 10150 1475 50 0001 C CNN
3.342 -F 1 "PWR_FLAG" V 10150 1528 50 0000 L CNN
3.343 -F 2 "" H 10150 1400 50 0001 C CNN
3.344 -F 3 "~" H 10150 1400 50 0001 C CNN
3.345 - 1 10150 1400
3.346 +P 10400 1400
3.347 +F 0 "#FLG0109" H 10400 1475 50 0001 C CNN
3.348 +F 1 "PWR_FLAG" V 10400 1528 50 0000 L CNN
3.349 +F 2 "" H 10400 1400 50 0001 C CNN
3.350 +F 3 "~" H 10400 1400 50 0001 C CNN
3.351 + 1 10400 1400
3.352 0 1 1 0
3.353 $EndComp
3.354 -Connection ~ 10150 1400
3.355 +Connection ~ 10400 1400
3.356 Wire Wire Line
3.357 - 10150 1400 10150 1300
3.358 + 10400 1400 10400 1300
3.359 Text Notes 10050 1200 0 50 ~ 0
3.360 Note that KiCad gets upset\nwhen connecting passives\nto power input pins.
3.361 +Text Notes 9600 5200 0 50 ~ 0
3.362 +PAL value is 39pF,\nNTSC value is 56pF.
3.363 +$Comp
3.364 +L Jumper:Jumper_3_Bridged12 LK2
3.365 +U 1 1 621C2C53
3.366 +P 3600 5850
3.367 +F 0 "LK2" V 3646 5917 50 0000 L CNN
3.368 +F 1 "PAL/NTSC" V 3555 5917 50 0000 L CNN
3.369 +F 2 "" H 3600 5850 50 0001 C CNN
3.370 +F 3 "~" H 3600 5850 50 0001 C CNN
3.371 + 1 3600 5850
3.372 + 0 -1 -1 0
3.373 +$EndComp
3.374 +Wire Wire Line
3.375 + 3600 6400 3600 6100
3.376 +Wire Wire Line
3.377 + 3750 5850 3850 5850
3.378 +Text GLabel 3500 5500 0 50 Input ~ 0
3.379 +0V
3.380 +Wire Wire Line
3.381 + 3500 5500 3600 5500
3.382 +Wire Wire Line
3.383 + 3600 5500 3600 5600
3.384 +Text Notes 5100 5700 0 50 ~ 0
3.385 +Colour burst > 2.5µs
3.386 +Text Notes 8050 5800 0 50 ~ 0
3.387 +Not fitted for NTSC\n(presumably R50-R57, maybe also L1).
3.388 +Text GLabel 9700 3100 3 50 Input ~ 0
3.389 +0V
3.390 +$Comp
3.391 +L Device:C C?
3.392 +U 1 1 624BA4A0
3.393 +P 9700 2800
3.394 +AR Path="/61DB955D/61DF7FF4/624BA4A0" Ref="C?" Part="1"
3.395 +AR Path="/62411C42/624BA4A0" Ref="C24" Part="1"
3.396 +F 0 "C24" H 9600 2750 50 0000 R CNN
3.397 +F 1 "100nF" H 9600 2850 50 0000 R CNN
3.398 +F 2 "" H 9738 2650 50 0001 C CNN
3.399 +F 3 "~" H 9700 2800 50 0001 C CNN
3.400 + 1 9700 2800
3.401 + -1 0 0 1
3.402 +$EndComp
3.403 +Wire Wire Line
3.404 + 9700 3100 9700 2950
3.405 +$Comp
3.406 +L Jumper:Jumper_2_Open LK5
3.407 +U 1 1 6255E663
3.408 +P 10100 2850
3.409 +F 0 "LK5" V 10100 2948 50 0000 L CNN
3.410 +F 1 "Jumper_2_Open" V 10145 2948 50 0001 L CNN
3.411 +F 2 "" H 10100 2850 50 0001 C CNN
3.412 +F 3 "~" H 10100 2850 50 0001 C CNN
3.413 + 1 10100 2850
3.414 + 0 1 1 0
3.415 +$EndComp
3.416 +Wire Wire Line
3.417 + 10400 2700 10500 2700
3.418 +Text GLabel 10100 3100 3 50 Input ~ 0
3.419 +0V
3.420 +Wire Wire Line
3.421 + 10100 3100 10100 3050
3.422 +$Comp
3.423 +L AcornElectron:UM1233-E36 SK4
3.424 +U 1 1 621B02BC
3.425 +P 10400 2150
3.426 +AR Path="/61DB955D/61DF7FF4/621B02BC" Ref="SK4" Part="1"
3.427 +AR Path="/62411C42/621B02BC" Ref="SK4" Part="1"
3.428 +F 0 "SK4" H 10700 2200 50 0000 L CNN
3.429 +F 1 "UM1233-E36" H 10700 2100 50 0000 L CNN
3.430 +F 2 "" H 10400 2350 50 0001 C CNN
3.431 +F 3 "" H 10400 2350 50 0001 C CNN
3.432 + 1 10400 2150
3.433 + 1 0 0 -1
3.434 +$EndComp
3.435 +Text Notes 10600 1750 0 50 ~ 0
3.436 +NTSC:\nUM1622 LA2/3
3.437 +NoConn ~ 9700 2650
3.438 +NoConn ~ 10100 2650
3.439 +Text Notes 9700 2600 0 38 ~ 0
3.440 +NTSC only\n(not connected)
3.441 +$Comp
3.442 +L power:PWR_FLAG #FLG0110
3.443 +U 1 1 626E446F
3.444 +P 3850 5550
3.445 +F 0 "#FLG0110" H 3850 5625 50 0001 C CNN
3.446 +F 1 "PWR_FLAG" V 3850 5678 50 0000 L CNN
3.447 +F 2 "" H 3850 5550 50 0001 C CNN
3.448 +F 3 "~" H 3850 5550 50 0001 C CNN
3.449 + 1 3850 5550
3.450 + 0 1 1 0
3.451 +$EndComp
3.452 +Text Notes 3950 5500 0 50 ~ 0
3.453 +KiCad workaround
3.454 +Wire Wire Line
3.455 + 3850 5300 3850 5550
3.456 +Connection ~ 3850 5550
3.457 +Wire Wire Line
3.458 + 3850 5550 3850 5850
3.459 $EndSCHEMATC
4.1 --- a/cassette.sch Sat Feb 12 19:35:41 2022 +0100
4.2 +++ b/cassette.sch Thu Feb 24 18:52:07 2022 +0100
4.3 @@ -73,7 +73,7 @@
4.4 AR Path="/624E7EFA" Ref="C?" Part="1"
4.5 AR Path="/624B50A6/624E7EFA" Ref="C7" Part="1"
4.6 F 0 "C7" V 2900 5500 50 0000 C CNN
4.7 -F 1 "10µF" V 2800 5500 50 0000 C CNN
4.8 +F 1 "10µF/35V" V 2800 5500 38 0000 C CNN
4.9 F 2 "" H 2688 5350 50 0001 C CNN
4.10 F 3 "~" H 2650 5500 50 0001 C CNN
4.11 1 2650 5500
4.12 @@ -805,7 +805,7 @@
4.13 U 1 1 61DC7D6C
4.14 P 2800 3050
4.15 F 0 "C8" H 2685 3004 50 0000 R CNN
4.16 -F 1 "1µF" H 2685 3095 50 0000 R CNN
4.17 +F 1 "1µF/35V/TANT" H 2685 3095 38 0000 R CNN
4.18 F 2 "" H 2838 2900 50 0001 C CNN
4.19 F 3 "~" H 2800 3050 50 0001 C CNN
4.20 1 2800 3050
5.1 --- a/sound.sch Sat Feb 12 19:35:41 2022 +0100
5.2 +++ b/sound.sch Thu Feb 24 18:52:07 2022 +0100
5.3 @@ -96,7 +96,7 @@
5.4 AR Path="/61EC8868" Ref="C?" Part="1"
5.5 AR Path="/61E9B87F/61EC8868" Ref="C25" Part="1"
5.6 F 0 "C25" V 4300 2400 50 0000 C CNN
5.7 -F 1 "22µF" V 4200 2400 50 0000 C CNN
5.8 +F 1 "22µF/16V" V 4200 2400 38 0000 C CNN
5.9 F 2 "" H 4088 2250 50 0001 C CNN
5.10 F 3 "~" H 4050 2400 50 0001 C CNN
5.11 1 4050 2400
5.12 @@ -143,7 +143,7 @@
5.13 AR Path="/61EC8881" Ref="C?" Part="1"
5.14 AR Path="/61E9B87F/61EC8881" Ref="C11" Part="1"
5.15 F 0 "C11" V 5500 2600 50 0000 C CNN
5.16 -F 1 "10µF" V 5400 2600 50 0000 C CNN
5.17 +F 1 "10µF/35V" V 5400 2600 38 0000 C CNN
5.18 F 2 "" H 5288 2450 50 0001 C CNN
5.19 F 3 "~" H 5250 2600 50 0001 C CNN
5.20 1 5250 2600