X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Fnes.h;h=217a90779ac716b6c644b6f8105d4216b76e896d;hb=2af76c7cffb08af3a6f7ca87c90132aa3e365f76;hp=46219b3de063697c52341db1b26b56dfbe283594;hpb=44fd1082ae807a0b6b4046c65914e20a7e27101c;p=cc65

diff --git a/include/nes.h b/include/nes.h
index 46219b3de..217a90779 100644
--- a/include/nes.h
+++ b/include/nes.h
@@ -1,8 +1,8 @@
 /*****************************************************************************/
 /*                                                                           */
-/*				     nes.h			       	     */
+/*                                   nes.h                                   */
 /*                                                                           */
-/*		        NES system specific definitions			     */
+/*                      NES system specific definitions                      */
 /*                                                                           */
 /*                                                                           */
 /*                                                                           */
@@ -82,6 +82,26 @@
 #define COLOR_LIGHTBLUE         0x0E
 #define COLOR_GRAY3             0x0F
 
+/* Masks for joy_read */
+#define JOY_UP_MASK     0x10
+#define JOY_DOWN_MASK   0x20
+#define JOY_LEFT_MASK   0x40
+#define JOY_RIGHT_MASK  0x80
+#define JOY_BTN_1_MASK  0x01
+#define JOY_BTN_2_MASK  0x02
+#define JOY_BTN_3_MASK  0x04
+#define JOY_BTN_4_MASK  0x08
+
+#define JOY_BTN_A_MASK  JOY_BTN_1_MASK
+#define JOY_BTN_B_MASK  JOY_BTN_2_MASK
+#define JOY_SELECT_MASK JOY_BTN_3_MASK
+#define JOY_START_MASK  JOY_BTN_4_MASK
+
+#define JOY_BTN_A(v)    ((v) & JOY_BTN_A_MASK)
+#define JOY_BTN_B(v)    ((v) & JOY_BTN_B_MASK)
+#define JOY_SELECT(v)   ((v) & JOY_SELECT_MASK)
+#define JOY_START(v)    ((v) & JOY_START_MASK)
+
 /* Return codes of get_tv */
 #define TV_NTSC         0
 #define TV_PAL          1
@@ -90,7 +110,62 @@
 /* No support for dynamically loadable drivers */
 #define DYN_DRV         0
 
-
+/* Define hardware */
+
+/* Picture Processing Unit */
+struct __ppu {
+    unsigned char control;
+    unsigned char mask;                 /* color; show sprites, background */
+      signed char volatile const status;
+    struct {
+        unsigned char address;
+        unsigned char data;
+    } sprite;
+    unsigned char scroll;
+    struct {
+        unsigned char address;
+        unsigned char data;
+    } vram;
+};
+#define PPU             (*(struct __ppu*)0x2000)
+#define SPRITE_DMA      (APU.sprite.dma)
+
+/* Audio Processing Unit */
+struct __apu {
+    struct {
+        unsigned char control;          /* duty, counter halt, volume/envelope */
+        unsigned char ramp;
+        unsigned char period_low;       /* timing */
+        unsigned char len_period_high;  /* length, timing */
+    } pulse[2];
+    struct {
+        unsigned char counter;          /* counter halt, linear counter */
+        unsigned char unused;
+        unsigned char period_low;       /* timing */
+        unsigned char len_period_high;  /* length, timing */
+    } triangle;
+    struct {
+        unsigned char control;          /* counter halt, volume/envelope */
+        unsigned char unused;
+        unsigned char period;           /* loop, timing */
+        unsigned char len;              /* length */
+    } noise;
+    struct {
+        unsigned char control;          /* IRQ, loop, rate */
+        unsigned char output;           /* output value */
+        unsigned char address;
+        unsigned char length;
+    } delta_mod;                        /* delta pulse-code modulation */
+    struct {
+        unsigned char dma;
+    } sprite;
+      signed char volatile status;
+    unsigned char unused;
+    unsigned char fcontrol;
+};
+#define APU             (*(struct __apu*)0x4000)
+
+#define JOYPAD          ((unsigned char volatile[2])0x4016)
 
 /* The addresses of the static drivers */
 extern void nes_stdjoy_joy[];       /* Referred to by joy_static_stddrv[] */
@@ -98,8 +173,8 @@ extern void nes_64_56_2_tgi[];      /* Referred to by tgi_static_stddrv[] */
 
 
 
-void waitvblank (void);
-/* Wait for the vertical blanking */
+void waitvsync (void);
+/* Wait for start of the next frame */
 
 unsigned char get_tv (void);
 /* Return the video mode the machine is using. */