mirror of
https://github.com/cc65/cc65.git
synced 2024-11-16 02:10:52 +00:00
204 lines
7.4 KiB
C
204 lines
7.4 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* nes.h */
|
|
/* */
|
|
/* NES system specific definitions */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2002-2003 Groepaz/Hitmen */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed or implied */
|
|
/* warranty. In no event will the authors be held liable for any damages */
|
|
/* arising from the use of this software. */
|
|
/* */
|
|
/* Permission is granted to anyone to use this software for any purpose, */
|
|
/* including commercial applications, and to alter it and redistribute it */
|
|
/* freely, subject to the following restrictions: */
|
|
/* */
|
|
/* 1. The origin of this software must not be misrepresented; you must not */
|
|
/* claim that you wrote the original software. If you use this software */
|
|
/* in a product, an acknowledgment in the product documentation would be */
|
|
/* appreciated but is not required. */
|
|
/* 2. Altered source versions must be plainly marked as such, and must not */
|
|
/* be misrepresented as being the original software. */
|
|
/* 3. This notice may not be removed or altered from any source */
|
|
/* distribution. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
#ifndef _NES_H
|
|
#define _NES_H
|
|
|
|
|
|
|
|
/* Check for errors */
|
|
#if !defined(__NES__)
|
|
# error This module may only be used when compiling for the NES!
|
|
#endif
|
|
|
|
|
|
|
|
/* Key and character defines */
|
|
#define CH_ENTER '\n'
|
|
#define CH_CURS_UP 0x01
|
|
#define CH_CURS_DOWN 0x02
|
|
#define CH_CURS_LEFT 0x03
|
|
#define CH_CURS_RIGHT 0x04
|
|
#define CH_ESC 8
|
|
#define CH_DEL 20
|
|
|
|
#define CH_CROSS 0x10
|
|
#define CH_RTEE 0x17
|
|
#define CH_LTEE 0x0f
|
|
#define CH_TTEE 0x16
|
|
#define CH_BTEE 0x15
|
|
#define CH_HLINE 0x0b
|
|
#define CH_VLINE 0x0e
|
|
#define CH_ULCORNER 0x14
|
|
#define CH_URCORNER 0x12
|
|
#define CH_LLCORNER 0x11
|
|
#define CH_LRCORNER 0x08
|
|
#define CH_PI 0x05
|
|
|
|
/* Color defines */
|
|
#define COLOR_BLACK 0x00
|
|
#define COLOR_WHITE 0x01
|
|
#define COLOR_RED 0x02
|
|
#define COLOR_CYAN 0x03
|
|
#define COLOR_PURPLE 0x04
|
|
#define COLOR_GREEN 0x05
|
|
#define COLOR_BLUE 0x06
|
|
#define COLOR_YELLOW 0x07
|
|
#define COLOR_ORANGE 0x08
|
|
#define COLOR_BROWN 0x09
|
|
#define COLOR_LIGHTRED 0x0A
|
|
#define COLOR_GRAY1 0x0B
|
|
#define COLOR_GRAY2 0x0C
|
|
#define COLOR_LIGHTGREEN 0x0D
|
|
#define COLOR_LIGHTBLUE 0x0E
|
|
#define COLOR_GRAY3 0x0F
|
|
|
|
/* TGI color defines (default palette) */
|
|
#define TGI_COLOR_BLACK COLOR_BLACK
|
|
#define TGI_COLOR_RED COLOR_RED
|
|
#define TGI_COLOR_PINK COLOR_LIGHTRED
|
|
#define TGI_COLOR_LIGHTGREY COLOR_GRAY1
|
|
#define TGI_COLOR_GREY COLOR_GRAY2
|
|
#define TGI_COLOR_DARKGREY COLOR_GRAY3
|
|
#define TGI_COLOR_BROWN COLOR_BROWN
|
|
#define TGI_COLOR_PEACH COLOR_CYAN
|
|
#define TGI_COLOR_YELLOW COLOR_YELLOW
|
|
#define TGI_COLOR_LIGHTGREEN COLOR_LIGHTGREEN
|
|
#define TGI_COLOR_GREEN COLOR_GREEN
|
|
#define TGI_COLOR_DARKBROWN COLOR_ORANGE
|
|
#define TGI_COLOR_PURPLE COLOR_PURPLE
|
|
#define TGI_COLOR_BLUE COLOR_BLUE
|
|
#define TGI_COLOR_LIGHTBLUE COLOR_LIGHTBLUE
|
|
#define TGI_COLOR_WHITE COLOR_WHITE
|
|
|
|
/* 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
|
|
#define TV_OTHER 2
|
|
|
|
/* 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[] */
|
|
extern void nes_64_56_2_tgi[]; /* Referred to by tgi_static_stddrv[] */
|
|
|
|
|
|
|
|
void waitvsync (void);
|
|
/* Wait for start of the next frame */
|
|
|
|
unsigned char get_tv (void);
|
|
/* Return the video mode the machine is using. */
|
|
|
|
|
|
|
|
/* End of nes.h */
|
|
#endif
|