Change to 64kbit eprom for DOS incl select switch

superbasic.sch

@@ -311,9 +311,9 @@ A13
 Wire Wire Line
 	8850 3050 8950 3050
 Text Label 8750 2950 2    50   ~ 0
-~E64_CE
+~SB_CE
 Text Label 5650 5500 2    50   ~ 0
-~E64_CE
+~SB_CE
 Wire Wire Line
 	5650 5500 5750 5500
 Wire Wire Line
@@ -740,16 +740,14 @@ Connection ~ 8800 5500
 Wire Wire Line
 	8800 5500 9300 5500
 Text Label 8250 5500 2    50   ~ 0
-~E32_CE
+~DOS_CE
 Wire Wire Line
 	8250 5500 8350 5500
 Connection ~ 8350 5500
 Wire Wire Line
-	6850 2850 7000 2850
-Wire Wire Line
-	6900 2950 7000 2950
+	6900 2950 6950 2950
 Text Label 6900 2950 2    50   ~ 0
-~E32_CE
+~DOS_CE
 Wire Wire Line
 	7400 3250 7400 3300
 $Comp
@@ -896,17 +894,6 @@ Entry Wire Line
 	8150 1450 8250 1350
 Entry Wire Line
 	8150 1350 8250 1250
-$Comp
-L sm6uax:27C32 U3
-U 1 1 61434BF5
-P 7400 2150
-F 0 "U3" H 7150 3100 50  0000 C CNN
-F 1 "27C32" H 7650 3100 50  0000 C CNN
-F 2 "Package_DIP:DIP-24_W15.24mm" H 7400 2150 50  0001 C CNN
-F 3 "" H 7400 2150 50  0001 C CNN
-	1    7400 2150
-	1    0    0    -1  
-$EndComp
 Connection ~ 6500 600 
 Wire Bus Line
 	6500 600  7150 600 
@@ -1591,7 +1578,7 @@ Wire Wire Line
 	6650 5500 7150 5500
 Wire Wire Line
 	5750 5500 6200 5500
-Text Label 6850 2850 2    50   ~ 0
+Text Label 6850 2750 2    50   ~ 0
 A14
 Wire Bus Line
 	4550 600  6500 600 
@@ -1985,6 +1972,96 @@ Connection ~ 2600 600
 Connection ~ 8250 600 
 Wire Bus Line
 	8250 600  6500 600 
+Text Label 750  1650 0    50   ~ 0
+GND
+Text Label 2700 1650 0    50   ~ 0
+GND
+Text Label 4650 1650 0    50   ~ 0
+GND
+$Comp
+L Memory_EPROM:27C64 U3
+U 1 1 6108B15A
+P 7400 2150
+F 0 "U3" H 7200 3150 50  0000 C CNN
+F 1 "27C64" H 7600 3150 50  0000 C CNN
+F 2 "Package_DIP:DIP-28_W15.24mm" H 7400 2150 50  0001 C CNN
+F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/11107M.pdf" H 7400 2150 50  0001 C CNN
+	1    7400 2150
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	7000 3050 6950 3050
+Wire Wire Line
+	6950 3050 6950 2950
+Connection ~ 6950 2950
+Wire Wire Line
+	6950 2950 7000 2950
+Wire Wire Line
+	6850 2750 7000 2750
+Wire Wire Line
+	6600 2850 7000 2850
+$Comp
+L power:+5V #PWR0108
+U 1 1 61124DFD
+P 6600 2750
+F 0 "#PWR0108" H 6600 2600 50  0001 C CNN
+F 1 "+5V" H 6615 2923 50  0000 C CNN
+F 2 "" H 6600 2750 50  0001 C CNN
+F 3 "" H 6600 2750 50  0001 C CNN
+	1    6600 2750
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	6600 2750 6600 2850
+$Comp
+L Switch:SW_DPDT_x2 SW1
+U 1 1 611974C1
+P 8550 6050
+F 0 "SW1" H 8550 6335 50  0000 C CNN
+F 1 "SW_DPDT_x2" H 8550 6244 50  0000 C CNN
+F 2 "Button_Switch_THT:SW_CuK_JS202011CQN_DPDT_Straight" H 8550 6050 50  0001 C CNN
+F 3 "~" H 8550 6050 50  0001 C CNN
+	1    8550 6050
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+5V #PWR0110
+U 1 1 6119D6B2
+P 9000 5850
+F 0 "#PWR0110" H 9000 5700 50  0001 C CNN
+F 1 "+5V" H 9015 6023 50  0000 C CNN
+F 2 "" H 9000 5850 50  0001 C CNN
+F 3 "" H 9000 5850 50  0001 C CNN
+	1    9000 5850
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	8750 5950 9000 5950
+Wire Wire Line
+	9000 5950 9000 5850
+$Comp
+L power:GND #PWR0114
+U 1 1 611CCD0E
+P 9000 6200
+F 0 "#PWR0114" H 9000 5950 50  0001 C CNN
+F 1 "GND" H 9005 6027 50  0000 C CNN
+F 2 "" H 9000 6200 50  0001 C CNN
+F 3 "" H 9000 6200 50  0001 C CNN
+	1    9000 6200
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	8750 6150 9000 6150
+Wire Wire Line
+	9000 6150 9000 6200
+Wire Wire Line
+	8200 6050 8350 6050
+Text Label 8200 6050 2    50   ~ 0
+DOS_SEL
+Text Label 6850 2550 2    50   ~ 0
+DOS_SEL
+Wire Wire Line
+	6850 2550 7000 2550
 Wire Bus Line
 	10200 600  10200 4450
 Wire Bus Line
@@ -1999,10 +2076,4 @@ Wire Bus Line
 	6500 600  6500 4450
 Wire Bus Line
 	650  600  650  4350
-Text Label 750  1650 0    50   ~ 0
-GND
-Text Label 2700 1650 0    50   ~ 0
-GND
-Text Label 4650 1650 0    50   ~ 0
-GND
 $EndSCHEMATC