add spiram

apple1.ino

@@ -51,6 +51,7 @@ void setup() {
 	for (unsigned i = 0; i < RAM_SIZE; i += 1024)
 		memory.put(pages[i / 1024], i);
 
+	memory.put(sram, SPIRAM_BASE, SPIRAM_EXTENT);
 	memory.put(io, 0xd000);
 	memory.put(b, 0xe000);
 	memory.put(m, 0xff00);

config.h

@@ -2,6 +2,9 @@
 #define _CONFIG_H
 
 #define RAM_SIZE	4096
+#define SPIRAM_BASE	0x1000
+#define SPIRAM_EXTENT	(28 * 1024 / 256)
+
 #define CPU_INSTRUCTIONS	1000
 
 #define TFT_FG	VGA_LIME

io.cpp

@@ -181,18 +181,22 @@ io::operator byte() {
 
 	switch (_acc % 4) {
 	case 0:
+/*
 Serial.print("<");
 Serial.print(_acc, 16);
 Serial.print(" ");
 Serial.println(kbd, 16);
+*/
 		return kbd;
 	case 1:
 		if (kbd_int && kbd_cr >= 0x80) {
 			kbd_cr = 0;
+/*
 Serial.print("<");
 Serial.print(_acc, 16);
 Serial.print(" ");
 Serial.println(0xa7, 16);
+*/
 			if (_loading) {
 				if (tape.more())
 					enter(tape.read());