129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
//////////////////////////////////////////////////////////////////////////////////
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// 本程序移植自网友ye781205的NES模拟器工程
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// ALIENTEK STM32F407开发板
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// NES APU 驱动代码
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// 正点原子@ALIENTEK
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// 技术论坛:www.openedv.com
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// 创建日期:2014/7/1
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// 版本：V1.0
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//////////////////////////////////////////////////////////////////////////////////
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#ifndef __NES_PPU_H
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#define __NES_PPU_H
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#include "nes_main.h"
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#undef NULL
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#define NULL 0
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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static const unsigned int NES_Palette[64] = {
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0x73AE, 0x20D1, 0x0015, 0x4013, 0x880E, 0xA802, 0xA000, 0x7840,
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0x4160, 0x0220, 0x0280, 0x01E2, 0x19EB, 0x0000, 0x0000, 0x0000,
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0xBDF7, 0x039D, 0x21DD, 0x801E, 0xB817, 0xE00B, 0xD940, 0xCA61,
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0x8B80, 0x04A0, 0x0540, 0x0487, 0x0411, 0x0000, 0x0000, 0x0000,
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0xF79E, 0x3DFF, 0x5CBF, 0xA45F, 0xF3DF, 0xFBB6, 0xFBAC, 0xFCC7,
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0xF5E7, 0x8682, 0x4EE9, 0x5FD3, 0x075B, 0x0000, 0x0000, 0x0000,
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0xF79E, 0xAF3F, 0xC6BF, 0xD65F, 0xFE3F, 0xFE3B, 0xFDF6, 0xFED5,
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0xFF34, 0xE7F4, 0xAF97, 0xB7F9, 0x9FFE, 0x0000, 0x0000, 0x0000};
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/*
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static unsigned int NES_Palette[64]=
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{
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0x73AE,0x20D1,0x0015,0x4013,0x880E,0xA802,0xA000,0x7840,
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0x4160,0x0220,0x0280,0x01E2,0x19EB,0x0000,0x0000,0x0000,
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0xBDF7,0x039D,0x21DD,0x801E,0xB817,0xE00B,0xD940,0xCA61,
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0x8B80,0x04A0,0x0540,0x0487,0x0411,0x0000,0x0000,0x0000,
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0xF79E,0x3DFF,0x5CBF,0xA45F,0xF3DF,0xFBB6,0xFBAC,0xFCC7,
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0xF5E7,0x8682,0x4EE9,0x5FD3,0x075B,0x0000,0x0000,0x0000,
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0xF79E,0xAF3F,0xC6BF,0xD65F,0xFE3F,0xFE3B,0xFDF6,0xFED5,
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0xFF34,0xE7F4,0xAF97,0xB7F9,0x9FFE,0x0000,0x0000,0x0000
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};
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*/
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extern uint8_t
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*VROM_banks; // VROM开始地址 图案表*************************************
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extern uint8_t *VROM_tiles;
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extern uint8_t *PPU_VRAM_banks[12];
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extern uint8_t *PPU_tile_banks[8];
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extern uint8_t *PPU_patterntables; // 8192//VROM开始地址
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// 图案表*************************************
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extern uint8_t *spr_ram; // sprite ram
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enum {
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NES_SCREEN_WIDTH = 256,
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NES_SCREEN_HEIGHT = 240,
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SIDE_MARGIN = 8,
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NES_SCREEN_WIDTH_VIEWABLE = NES_SCREEN_WIDTH,
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NES_BACKBUF_WIDTH = NES_SCREEN_WIDTH + (2 * SIDE_MARGIN)
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};
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enum { BG_WRITTEN_FLAG = 0x01, SPR_WRITTEN_FLAG = 0x02 };
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typedef struct {
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uint32_t in_vblank;
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uint32_t current_frame_line;
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uint16_t bg_pattern_table_addr;
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uint16_t spr_pattern_table_addr;
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uint16_t ppu_addr_inc;
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uint16_t loopy_v; // vram address -- used for reading/writing through $2007
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// see loopy-2005.txt
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uint16_t loopy_t; // temp vram address
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uint8_t loopy_x; // 3-bit subtile x-offset
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uint8_t toggle_2005_2006;
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uint8_t spr_ram_rw_ptr; // sprite ram read/write pointer内存读/写指针
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uint8_t read_2007_buffer;
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uint8_t LowRegs[0x08];
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uint8_t bg_pal[0x10]; // extern BYTE BGPal[0x20];
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// //背景调色板
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uint8_t spr_pal[0x10]; // extern BYTE SPPal[0x20];
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// //精灵调色板
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uint8_t PPU_nametables[4 * 0x400]; // 4096 PPU真正的的RAM
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// Rick
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uint8_t *PPU_VRAM_banks[12];
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uint8_t *PPU_tile_banks[8];
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uint8_t *PPU_tile_tables;
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uint8_t solid_buf[NES_BACKBUF_WIDTH]; // 当前像素的位标志线
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uint8_t dummy_buffer[NES_BACKBUF_WIDTH]; // used to do sprite 0 hit detection
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// when we aren't supposed to draw
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} ppu_data;
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extern ppu_data *ppu;
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extern uint8_t *spr_ram;
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uint32_t spr_enabled(void);
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uint32_t bg_enabled(void);
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void set_name_table(uint8_t bank, int bank_num);
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void set_tile_bank(int i, uint8_t *bank);
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void compile(int count, uint8_t *src, uint8_t *dest);
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void set_tile_banks(uint8_t *bank0, uint8_t *bank1, uint8_t *bank2, uint8_t *bank3,
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uint8_t *bank4, uint8_t *bank5, uint8_t *bank6, uint8_t *bank7);
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void PPU_reset(void *lcd_addr);
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void PPU_start_frame(void);
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void set_mirroring(uint32_t nt0, uint32_t nt1, uint32_t nt2,
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uint32_t nt3); // 设置垂直水平镜像
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uint8_t ReadLowRegs(uint32_t addr);
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void WriteLowRegs(uint32_t addr, uint8_t data);
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void scanline_draw(int LineNo);
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void do_scanline_and_draw(uint8_t *buf);
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// Rick
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void start_frame(uint8_t *buf, int ypitch);
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void end_frame(uint8_t *buf);
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void do_scanline_and_dont_draw(int LineNo);
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uint32_t NMI_enabled(void);
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void start_vblank(void);
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void end_vblank(void);
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void render_bg(uint8_t *buf);
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void render_spr(uint8_t *buf);
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void update_tile(int byteOffset, uint8_t data);
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#endif
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