mirror of https://github.com/bsnes-emu/bsnes.git
108 lines
1.8 KiB
C++
Executable File
108 lines
1.8 KiB
C++
Executable File
struct PPU : Thread {
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static void Main();
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void main();
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void tick();
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void scanline();
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void frame();
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void power();
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void reset();
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uint8 read(uint16 addr);
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void write(uint16 addr, uint8 data);
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uint8 ciram_read(uint16 addr);
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void ciram_write(uint16 addr, uint8 data);
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uint8 cgram_read(uint16 addr);
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void cgram_write(uint16 addr, uint8 data);
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bool raster_enable() const;
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unsigned nametable_addr() const;
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unsigned scrollx() const;
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unsigned scrolly() const;
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unsigned sprite_height() const;
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uint8 chr_load(uint16 addr);
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void scrollx_increment();
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void scrolly_increment();
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void raster_pixel();
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void raster_sprite();
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void raster_scanline();
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void serialize(serializer&);
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struct Status {
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uint8 mdr;
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bool field;
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unsigned lx;
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unsigned ly;
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uint8 bus_data;
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bool address_latch;
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uint15 vaddr;
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uint15 taddr;
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uint8 xaddr;
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bool nmi_hold;
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bool nmi_flag;
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//$2000
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bool nmi_enable;
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bool master_select;
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bool sprite_size;
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unsigned bg_addr;
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unsigned sprite_addr;
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unsigned vram_increment;
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//$2001
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uint3 emphasis;
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bool sprite_enable;
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bool bg_enable;
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bool sprite_edge_enable;
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bool bg_edge_enable;
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bool grayscale;
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//$2002
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bool sprite_zero_hit;
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bool sprite_overflow;
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//$2003
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uint8 oam_addr;
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} status;
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struct Raster {
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uint16 nametable;
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uint16 attribute;
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uint16 tiledatalo;
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uint16 tiledatahi;
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unsigned oam_iterator;
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unsigned oam_counter;
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struct OAM {
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uint8 id;
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uint8 y;
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uint8 tile;
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uint8 attr;
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uint8 x;
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uint8 tiledatalo;
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uint8 tiledatahi;
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} oam[8], soam[8];
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} raster;
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uint32 buffer[256 * 262];
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uint8 ciram[2048];
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uint8 cgram[32];
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uint8 oam[256];
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};
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extern PPU ppu;
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