1 EESchema Schematic File Version 4 2 LIBS:AcornElectronMainboard-cache 3 EELAYER 26 0 4 EELAYER END 5 $Descr A4 11693 8268 6 encoding utf-8 7 Sheet 6 9 8 Title "" 9 Date "" 10 Rev "" 11 Comp "" 12 Comment1 "" 13 Comment2 "" 14 Comment3 "" 15 Comment4 "" 16 $EndDescr 17 $Comp 18 L AcornElectron:Expansion PL? 19 U 1 1 61FB81A6 20 P 4450 5500 21 AR Path="/61FB81A6" Ref="PL?" Part="1" 22 AR Path="/61FB7D7E/61FB81A6" Ref="PL1" Part="1" 23 F 0 "PL1" V 4078 4705 50 0000 C CNN 24 F 1 "Expansion" V 3987 4705 50 0000 C CNN 25 F 2 "" H 4650 5500 50 0001 C CNN 26 F 3 "" H 4650 5500 50 0001 C CNN 27 1 4450 5500 28 0 -1 -1 0 29 $EndComp 30 Entry Wire Line 31 5800 3900 5900 3800 32 Entry Wire Line 33 5900 3900 6000 3800 34 Entry Wire Line 35 6000 3900 6100 3800 36 Entry Wire Line 37 6100 3900 6200 3800 38 Entry Wire Line 39 6200 3900 6300 3800 40 Entry Wire Line 41 6300 3900 6400 3800 42 Entry Wire Line 43 6400 3900 6500 3800 44 Entry Wire Line 45 6500 3900 6600 3800 46 Entry Wire Line 47 6600 3900 6700 3800 48 Entry Wire Line 49 6700 3900 6800 3800 50 Entry Wire Line 51 6800 3900 6900 3800 52 Entry Wire Line 53 6900 3900 7000 3800 54 Entry Wire Line 55 7000 3900 7100 3800 56 Entry Wire Line 57 7100 3900 7200 3800 58 Entry Wire Line 59 7200 3900 7300 3800 60 Entry Wire Line 61 7300 3900 7400 3800 62 Wire Wire Line 63 5800 5100 5800 3900 64 Wire Wire Line 65 5900 5100 5900 3900 66 Wire Wire Line 67 6000 5100 6000 3900 68 Wire Wire Line 69 6100 5100 6100 3900 70 Wire Wire Line 71 6200 5100 6200 3900 72 Wire Wire Line 73 6300 5100 6300 3900 74 Wire Wire Line 75 6400 5100 6400 3900 76 Wire Wire Line 77 6500 5100 6500 3900 78 Wire Wire Line 79 6600 5100 6600 3900 80 Wire Wire Line 81 6700 5100 6700 3900 82 Wire Wire Line 83 6800 5100 6800 3900 84 Wire Wire Line 85 6900 5100 6900 3900 86 Wire Wire Line 87 7000 5100 7000 3900 88 Wire Wire Line 89 7100 5100 7100 3900 90 Wire Wire Line 91 7200 5100 7200 3900 92 Wire Wire Line 93 7300 5100 7300 3900 94 Text Label 6500 5100 1 50 ~ 0 95 A0 96 Text Label 6600 5100 1 50 ~ 0 97 A1 98 Text Label 6700 5100 1 50 ~ 0 99 A2 100 Text Label 6800 5100 1 50 ~ 0 101 A3 102 Text Label 6900 5100 1 50 ~ 0 103 A4 104 Text Label 7000 5100 1 50 ~ 0 105 A5 106 Text Label 7100 5100 1 50 ~ 0 107 A6 108 Text Label 7200 5100 1 50 ~ 0 109 A7 110 Text Label 7300 5100 1 50 ~ 0 111 A8 112 Text Label 6400 5100 1 50 ~ 0 113 A9 114 Text Label 6300 5100 1 50 ~ 0 115 A10 116 Text Label 6200 5100 1 50 ~ 0 117 A11 118 Text Label 6100 5100 1 50 ~ 0 119 A12 120 Text Label 6000 5100 1 50 ~ 0 121 A13 122 Text Label 5900 5100 1 50 ~ 0 123 A14 124 Text Label 5800 5100 1 50 ~ 0 125 A15 126 Wire Wire Line 127 2400 4800 3000 4800 128 Wire Wire Line 129 3100 4800 3100 5100 130 Wire Wire Line 131 3000 4800 3000 5100 132 Connection ~ 3000 4800 133 Wire Wire Line 134 3000 4800 3100 4800 135 Wire Wire Line 136 2400 5000 2800 5000 137 Wire Wire Line 138 2900 5000 2900 5100 139 Wire Wire Line 140 2800 5100 2800 5000 141 Connection ~ 2800 5000 142 Wire Wire Line 143 2800 5000 2900 5000 144 Text GLabel 3400 4700 1 50 Input ~ 0 145 0V 146 Text GLabel 3200 4700 1 50 Input ~ 0 147 -5V 148 Text GLabel 3600 4700 1 50 Input ~ 0 149 5V 150 Wire Wire Line 151 3200 5100 3200 4800 152 Wire Wire Line 153 3300 5100 3300 4800 154 Wire Wire Line 155 3300 4800 3200 4800 156 Connection ~ 3200 4800 157 Wire Wire Line 158 3200 4800 3200 4700 159 Wire Wire Line 160 3400 5100 3400 4800 161 Wire Wire Line 162 3500 5100 3500 4800 163 Wire Wire Line 164 3500 4800 3400 4800 165 Connection ~ 3400 4800 166 Wire Wire Line 167 3400 4800 3400 4700 168 Wire Wire Line 169 3600 5100 3600 4800 170 Wire Wire Line 171 3700 5100 3700 4800 172 Wire Wire Line 173 3700 4800 3600 4800 174 Connection ~ 3600 4800 175 Wire Wire Line 176 3600 4800 3600 4700 177 Text GLabel 7500 4700 1 50 Input ~ 0 178 0V 179 Text GLabel 7700 4700 1 50 Input ~ 0 180 5V 181 Wire Wire Line 182 7500 5100 7500 4800 183 Wire Wire Line 184 7400 4800 7500 4800 185 Connection ~ 7500 4800 186 Wire Wire Line 187 7500 4800 7500 4700 188 Wire Wire Line 189 7700 5100 7700 4800 190 Wire Wire Line 191 7600 5100 7600 4800 192 Wire Wire Line 193 7600 4800 7700 4800 194 Connection ~ 7700 4800 195 Wire Wire Line 196 7700 4800 7700 4700 197 Wire Bus Line 198 5400 3800 5400 3500 199 Entry Wire Line 200 4600 3900 4700 3800 201 Entry Wire Line 202 4700 3900 4800 3800 203 Entry Wire Line 204 4800 3900 4900 3800 205 Entry Wire Line 206 4900 3900 5000 3800 207 Entry Wire Line 208 5000 3900 5100 3800 209 Entry Wire Line 210 5100 3900 5200 3800 211 Entry Wire Line 212 5200 3900 5300 3800 213 Entry Wire Line 214 5300 3900 5400 3800 215 Wire Wire Line 216 4600 3900 4600 5100 217 Wire Wire Line 218 4700 5100 4700 3900 219 Wire Wire Line 220 4800 5100 4800 3900 221 Wire Wire Line 222 4900 5100 4900 3900 223 Wire Wire Line 224 5000 5100 5000 3900 225 Wire Wire Line 226 5100 5100 5100 3900 227 Wire Wire Line 228 5200 5100 5200 3900 229 Wire Wire Line 230 5300 5100 5300 3900 231 Wire Wire Line 232 4400 5100 4400 3500 233 Wire Wire Line 234 4300 5100 4300 4200 235 Wire Wire Line 236 4200 3500 4200 5100 237 Wire Wire Line 238 4100 4200 4100 5100 239 Wire Wire Line 240 3800 5100 3800 3500 241 Wire Wire Line 242 7400 4800 7400 5100 243 Wire Wire Line 244 3900 4200 3900 5100 245 Wire Wire Line 246 4000 3500 4000 5100 247 Wire Wire Line 248 4500 4200 4500 5100 249 Text GLabel 5400 3500 1 50 BiDi ~ 0 250 D[0..7] 251 Text GLabel 7400 3500 1 50 Input ~ 0 252 A[0..15] 253 Text GLabel 3800 3500 1 50 Input ~ 0 254 SOUND_OUTPUT_EXPANSION 255 Text GLabel 3900 4200 1 50 Input ~ 0 256 CLOCK_16MHz 257 Text GLabel 4000 3500 1 50 Input ~ 0 258 CLOCK_16MHz_DIV_13 259 Text GLabel 2400 4800 0 50 UnSpc ~ 0 260 POWER_AC_RETURN 261 Text GLabel 2400 5000 0 50 UnSpc ~ 0 262 POWER_18VAC 263 Text GLabel 4100 4200 1 50 Input ~ 0 264 PHI_OUT 265 Wire Wire Line 266 5400 4200 5400 5000 267 Text GLabel 5400 4200 1 50 Output ~ 0 268 RDY 269 Text GLabel 4200 3500 1 50 Input ~ 0 270 ~RST 271 Text GLabel 4300 4200 1 50 Output ~ 0 272 ~NMI 273 Text GLabel 4400 3500 1 50 Output ~ 0 274 ~IRQ 275 Text GLabel 4500 4200 1 50 Input ~ 0 276 RnW 277 $Comp 278 L Device:R R71 279 U 1 1 6261A068 280 P 5500 4650 281 F 0 "R71" H 5550 4700 50 0000 L CNN 282 F 1 "3300R" H 5550 4600 50 0000 L CNN 283 F 2 "" V 5430 4650 50 0001 C CNN 284 F 3 "~" H 5500 4650 50 0001 C CNN 285 1 5500 4650 286 1 0 0 -1 287 $EndComp 288 Text GLabel 5500 4400 1 50 Input ~ 0 289 5V 290 Wire Wire Line 291 5500 4400 5500 4500 292 Wire Wire Line 293 5500 4800 5500 5000 294 Wire Wire Line 295 5500 5000 5400 5000 296 Connection ~ 5400 5000 297 Wire Wire Line 298 5400 5000 5400 5100 299 Wire Bus Line 300 7400 3500 7400 3800 301 Text Label 7400 3700 0 50 ~ 0 302 A[0..15] 303 Text Label 5400 3700 0 50 ~ 0 304 D[0..7] 305 Text Label 5300 5100 1 50 ~ 0 306 D0 307 Text Label 5200 5100 1 50 ~ 0 308 D1 309 Text Label 5100 5100 1 50 ~ 0 310 D2 311 Text Label 5000 5100 1 50 ~ 0 312 D3 313 Text Label 4900 5100 1 50 ~ 0 314 D4 315 Text Label 4800 5100 1 50 ~ 0 316 D5 317 Text Label 4700 5100 1 50 ~ 0 318 D6 319 Text Label 4600 5100 1 50 ~ 0 320 D7 321 Wire Bus Line 322 4700 3800 5400 3800 323 Wire Bus Line 324 5900 3800 7400 3800 325 $EndSCHEMATC