1.1 --- a/RAM.sch Sun Feb 27 17:46:10 2022 +0100
1.2 +++ b/RAM.sch Sun Apr 03 18:39:26 2022 +0200
1.3 @@ -15,7 +15,7 @@
1.4 Comment4 ""
1.5 $EndDescr
1.6 $Comp
1.7 -L DRAM:4164 IC4
1.8 +L AcornElectron:4164 IC4
1.9 U 1 1 61D7F23A
1.10 P 2350 2650
1.11 F 0 "IC4" H 2350 3225 50 0000 C CNN
1.12 @@ -26,7 +26,7 @@
1.13 1 0 0 -1
1.14 $EndComp
1.15 $Comp
1.16 -L DRAM:4164 IC5
1.17 +L AcornElectron:4164 IC5
1.18 U 1 1 61D7F241
1.19 P 3750 2650
1.20 F 0 "IC5" H 3750 3225 50 0000 C CNN
1.21 @@ -37,7 +37,7 @@
1.22 1 0 0 -1
1.23 $EndComp
1.24 $Comp
1.25 -L DRAM:4164 IC6
1.26 +L AcornElectron:4164 IC6
1.27 U 1 1 61D7F248
1.28 P 5150 2650
1.29 F 0 "IC6" H 5150 3225 50 0000 C CNN
1.30 @@ -48,7 +48,7 @@
1.31 1 0 0 -1
1.32 $EndComp
1.33 $Comp
1.34 -L DRAM:4164 IC7
1.35 +L AcornElectron:4164 IC7
1.36 U 1 1 61D7F24F
1.37 P 6550 2650
1.38 F 0 "IC7" H 6550 3225 50 0000 C CNN
1.39 @@ -526,6 +526,148 @@
1.40 Wire Wire Line
1.41 2900 1900 4300 1900
1.42 Connection ~ 4300 1900
1.43 +$Comp
1.44 +L AcornElectron:TM4164EA4 IC20
1.45 +U 1 1 623B101C
1.46 +P 1350 5250
1.47 +AR Path="/623B101C" Ref="IC20" Part="1"
1.48 +AR Path="/61D7EEE8/623B101C" Ref="IC20" Part="1"
1.49 +F 0 "IC20" H 1072 5296 50 0000 R CNN
1.50 +F 1 "TM4164EA4" H 1072 5205 50 0000 R CNN
1.51 +F 2 "" H 1400 5750 50 0001 C CNN
1.52 +F 3 "" H 1400 5750 50 0001 C CNN
1.53 + 1 1350 5250
1.54 + 1 0 0 -1
1.55 +$EndComp
1.56 +Text GLabel 1350 3900 1 50 Input ~ 0
1.57 +5V
1.58 +Text GLabel 1350 6600 3 50 Input ~ 0
1.59 +0V
1.60 +Wire Wire Line
1.61 + 1350 3900 1350 4000
1.62 +Wire Wire Line
1.63 + 1350 6600 1350 6500
1.64 +Text GLabel 7700 5000 2 50 Input ~ 0
1.65 +RA[0..7]
1.66 +Wire Bus Line
1.67 + 7700 5000 2100 5000
1.68 +Entry Wire Line
1.69 + 2000 5100 2100 5000
1.70 +Entry Wire Line
1.71 + 2000 5200 2100 5100
1.72 +Entry Wire Line
1.73 + 2000 5300 2100 5200
1.74 +Entry Wire Line
1.75 + 2000 5400 2100 5300
1.76 +Entry Wire Line
1.77 + 2000 5500 2100 5400
1.78 +Entry Wire Line
1.79 + 2000 5600 2100 5500
1.80 +Entry Wire Line
1.81 + 2000 5700 2100 5600
1.82 +Entry Wire Line
1.83 + 2000 5800 2100 5700
1.84 +Wire Wire Line
1.85 + 1700 5100 2000 5100
1.86 +Wire Wire Line
1.87 + 1700 5200 2000 5200
1.88 +Wire Wire Line
1.89 + 1700 5300 2000 5300
1.90 +Wire Wire Line
1.91 + 1700 5400 2000 5400
1.92 +Wire Wire Line
1.93 + 1700 5500 2000 5500
1.94 +Wire Wire Line
1.95 + 1700 5600 2000 5600
1.96 +Wire Wire Line
1.97 + 1700 5700 2000 5700
1.98 +Wire Wire Line
1.99 + 1700 5800 2000 5800
1.100 +NoConn ~ 1700 5900
1.101 +Text Label 1750 5100 0 50 ~ 0
1.102 +A0
1.103 +Text Label 1750 5200 0 50 ~ 0
1.104 +A1
1.105 +Text Label 1750 5300 0 50 ~ 0
1.106 +A2
1.107 +Text Label 1750 5400 0 50 ~ 0
1.108 +A3
1.109 +Text Label 1750 5500 0 50 ~ 0
1.110 +A4
1.111 +Text Label 1750 5600 0 50 ~ 0
1.112 +A5
1.113 +Text Label 1750 5700 0 50 ~ 0
1.114 +A6
1.115 +Text Label 1750 5800 0 50 ~ 0
1.116 +A7
1.117 +Text GLabel 7700 4100 2 50 BiDi ~ 0
1.118 +RAM[0..3]
1.119 +Wire Bus Line
1.120 + 7700 4100 2100 4100
1.121 +Entry Wire Line
1.122 + 2000 4200 2100 4100
1.123 +Entry Wire Line
1.124 + 2000 4300 2100 4200
1.125 +Entry Wire Line
1.126 + 2000 4400 2100 4300
1.127 +Entry Wire Line
1.128 + 2000 4500 2100 4400
1.129 +Entry Wire Line
1.130 + 2000 4600 2100 4500
1.131 +Entry Wire Line
1.132 + 2000 4700 2100 4600
1.133 +Entry Wire Line
1.134 + 2000 4800 2100 4700
1.135 +Entry Wire Line
1.136 + 2000 4900 2100 4800
1.137 +Wire Wire Line
1.138 + 1700 4200 2000 4200
1.139 +Wire Wire Line
1.140 + 1700 4300 2000 4300
1.141 +Wire Wire Line
1.142 + 1700 4400 2000 4400
1.143 +Wire Wire Line
1.144 + 1700 4500 2000 4500
1.145 +Wire Wire Line
1.146 + 1700 4600 2000 4600
1.147 +Wire Wire Line
1.148 + 1700 4700 2000 4700
1.149 +Wire Wire Line
1.150 + 1700 4800 2000 4800
1.151 +Wire Wire Line
1.152 + 1700 4900 2000 4900
1.153 +Text Label 1750 4200 0 50 ~ 0
1.154 +RAM0
1.155 +Text Label 1750 4400 0 50 ~ 0
1.156 +RAM1
1.157 +Text Label 1750 4600 0 50 ~ 0
1.158 +RAM2
1.159 +Text Label 1750 4800 0 50 ~ 0
1.160 +RAM3
1.161 +Text Label 1750 4300 0 50 ~ 0
1.162 +RAM0
1.163 +Text Label 1750 4500 0 50 ~ 0
1.164 +RAM1
1.165 +Text Label 1750 4700 0 50 ~ 0
1.166 +RAM2
1.167 +Text Label 1750 4900 0 50 ~ 0
1.168 +RAM3
1.169 +Text Label 7600 5000 2 50 ~ 0
1.170 +A[0..7]
1.171 +Text GLabel 7700 6100 2 50 Input ~ 0
1.172 +~CAS
1.173 +Text GLabel 8000 6200 2 50 Input ~ 0
1.174 +~RAS
1.175 +Text GLabel 7700 6300 2 50 Input ~ 0
1.176 +~WE
1.177 +Wire Wire Line
1.178 + 7700 6100 1700 6100
1.179 +Wire Wire Line
1.180 + 1700 6200 8000 6200
1.181 +Wire Wire Line
1.182 + 1700 6300 7700 6300
1.183 +Text Notes 2100 4000 0 50 ~ 0
1.184 +Alternative DRAM single-in-line package
1.185 Wire Wire Line
1.186 1900 3100 3300 3100
1.187 Wire Wire Line
1.188 @@ -549,5 +691,9 @@
1.189 Wire Bus Line
1.190 3000 2700 3000 3300
1.191 Wire Bus Line
1.192 + 2100 5000 2100 5700
1.193 +Wire Bus Line
1.194 + 2100 4100 2100 4800
1.195 +Wire Bus Line
1.196 1600 1600 7700 1600
1.197 $EndSCHEMATC