add krusader rom and make config option

README.md

@@ -2,3 +2,4 @@ Apple-1 Emulator
 ================
 
 - see [napple1](https://github.com/nobuh/napple1)
+- see also [krusader](http://school.anhb.uwa.edu.au/personalpages/kwessen/apple1/Krusader.htm)

apple1.ino

@@ -5,14 +5,20 @@
 #include <UTFT.h>
 #include <r65emu.h>
 
-#include "roms/basic.h"
-#include "roms/monitor.h"
 #include "pia.h"
 #include "io.h"
 #include "config.h"
 
+#if defined(KRUSADER)
+#include "roms/krusader6502.h"
+prom b(krusader6502, sizeof(krusader6502));
+#else
+#include "roms/basic.h"
+#include "roms/monitor.h"
 prom b(basic, sizeof(basic));
 prom m(monitor, sizeof(monitor));
+#endif
+
 ram pages[RAM_SIZE / 1024];
 io io;
 
@@ -54,8 +60,12 @@ void setup() {
 
 	memory.put(sram, SPIRAM_BASE, SPIRAM_EXTENT);
 	memory.put(io, 0xd000);
+#if defined(KRUSADER)
+	memory.put(b, 0xe000);
+#else
 	memory.put(b, 0xe000);
 	memory.put(m, 0xff00);
+#endif
 
 	reset();
 }

config.h

@@ -11,4 +11,6 @@
 #define TFT_BG	VGA_BLACK
 #define PROGRAMS	"/apple1/"
 
+#define KRUSADER	1
+
 #endif