diff --git a/nes/eznes.h b/nes/eznes.h
index 5958fa9..31b4460 100644
--- a/nes/eznes.h
+++ b/nes/eznes.h
@@ -13,12 +13,16 @@
 
 #define u8 unsigned char
 #define u16 unsigned short
-#define s8 char
-#define s16 short
+#define s8 signed char
+#define s16 signed short
 
 /* Generic constants */
 
+#ifdef PAL
+#define CPU 1662607 /* PAL */
+#else
 #define CPU 1789773 /* NTSC */
+#endif
 
 #define SCREEN_WIDTH  32
 #define SCREEN_HEIGHT 28
@@ -83,9 +87,12 @@ u8 joy_input_wait() {
 }
 
 /* palette loader */
-void init_palette(u8 bg, u8 c1, u8 c2, u8 c3, u8 c4) {
+void init_palette(u8 bg1, u8 bg2, u8 bg3, u8 bg4, u8 c1, u8 c2, u8 c3, u8 c4) {
   u8 i, pal[16] = {0};
-  pal[0] = pal[4] = pal[8] = pal[12] = bg;
+  pal[0] = bg1;
+  pal[4] = bg2;
+  pal[8] = bg3;
+  pal[12] = bg4;
   pal[3] = c1;
   pal[7] = c2;
   pal[11] = c3;
@@ -149,11 +156,11 @@ void init_sound() {
 
 /* Game initialization section */
 
-void init_game(u8 bg, u8 c1, u8 c2, u8 c3, u8 c4) {
+void init_game(u8 bg1, u8 bg2, u8 bg3, u8 bg4, u8 c1, u8 c2, u8 c3, u8 c4) {
   init_sound();
   bgcolor(COLOR_BLACK);
   textcolor(0);
-  init_palette(bg, c1, c2, c3, c4);
+  init_palette(bg1, bg2, bg3, bg4, c1, c2, c3, c4);
   joy_install(joy_static_stddrv);
   clrscr();
 }
diff --git a/nes/nescoundrel.c b/nes/nescoundrel.c
index 1bdb99a..85aa5dd 100644
--- a/nes/nescoundrel.c
+++ b/nes/nescoundrel.c
@@ -56,7 +56,7 @@ void beep_err() {
 
 void game_startup() {
   u8 i, j, x = 0;
-  init_game(NES_BLACK, NES_WHITE, NES_RED, NES_GREEN, NES_YELLOW);
+  init_game(NES_BLACK, NES_BLACK, NES_BLACK, NES_BLACK, NES_WHITE, NES_RED, NES_GREEN, NES_YELLOW);
   ppu_off();
   for(j=0;j<24;j+=4)
     for(i=3;i<32;i+=4)
@@ -147,7 +147,7 @@ Potion level: x - 21
 /* Game stats */
 
 /* main deck and room */
-static char deck[44], room[] = {0, 0, 0, 0};
+static s8 deck[44], room[] = {0, 0, 0, 0};
 
 /* status message */
 static char status_msg[(SCREEN_WIDTH-1)];