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- class bPPU : public PPU {
- public:
- void enter();
- void add_clocks(unsigned clocks);
- uint8 region;
- unsigned line;
- enum { NTSC = 0, PAL = 1 };
- enum { BG1 = 0, BG2 = 1, BG3 = 2, BG4 = 3, OAM = 4, BACK = 5, COL = 5 };
- enum { SC_32x32 = 0, SC_64x32 = 1, SC_32x64 = 2, SC_64x64 = 3 };
- struct {
- bool interlace;
- bool overscan;
- } display;
- struct {
- //open bus support
- uint8 ppu1_mdr, ppu2_mdr;
- //bg line counters
- uint16 bg_y[4];
- //$2100
- bool display_disabled;
- uint8 display_brightness;
- //$2101
- uint8 oam_basesize;
- uint8 oam_nameselect;
- uint16 oam_tdaddr;
- //$2102-$2103
- uint16 oam_baseaddr;
- uint16 oam_addr;
- bool oam_priority;
- uint8 oam_firstsprite;
- //$2104
- uint8 oam_latchdata;
- //$2105
- bool bg_tilesize[4];
- bool bg3_priority;
- uint8 bg_mode;
- //$2106
- uint8 mosaic_size;
- bool mosaic_enabled[4];
- uint16 mosaic_countdown;
- //$2107-$210a
- uint16 bg_scaddr[4];
- uint8 bg_scsize[4];
- //$210b-$210c
- uint16 bg_tdaddr[4];
- //$210d-$2114
- uint8 bg_ofslatch;
- uint16 m7_hofs, m7_vofs;
- uint16 bg_hofs[4];
- uint16 bg_vofs[4];
- //$2115
- bool vram_incmode;
- uint8 vram_mapping;
- uint8 vram_incsize;
- //$2116-$2117
- uint16 vram_addr;
- //$211a
- uint8 mode7_repeat;
- bool mode7_vflip;
- bool mode7_hflip;
- //$211b-$2120
- uint8 m7_latch;
- uint16 m7a, m7b, m7c, m7d, m7x, m7y;
- //$2121
- uint16 cgram_addr;
- //$2122
- uint8 cgram_latchdata;
- //$2123-$2125
- bool window1_enabled[6];
- bool window1_invert [6];
- bool window2_enabled[6];
- bool window2_invert [6];
- //$2126-$2129
- uint8 window1_left, window1_right;
- uint8 window2_left, window2_right;
- //$212a-$212b
- uint8 window_mask[6];
- //$212c-$212d
- bool bg_enabled[5], bgsub_enabled[5];
- //$212e-$212f
- bool window_enabled[5], sub_window_enabled[5];
- //$2130
- uint8 color_mask, colorsub_mask;
- bool addsub_mode;
- bool direct_color;
- //$2131
- bool color_mode, color_halve;
- bool color_enabled[6];
- //$2132
- uint8 color_r, color_g, color_b;
- uint16 color_rgb;
- //$2133
- //overscan and interlace are checked once per frame to
- //determine if entire frame should be interlaced/non-interlace
- //and overscan adjusted. therefore, the variables act sort of
- //like a buffer, but they do still affect internal rendering
- bool mode7_extbg;
- bool pseudo_hires;
- bool overscan;
- uint16 scanlines;
- bool oam_interlace;
- bool interlace;
- //$2137
- uint16 hcounter, vcounter;
- bool latch_hcounter, latch_vcounter;
- bool counters_latched;
- //$2139-$213a
- uint16 vram_readbuffer;
- //$213e
- bool time_over, range_over;
- uint16 oam_itemcount, oam_tilecount;
- } regs;
- struct {
- //$2101
- uint8 oam_basesize;
- uint8 oam_nameselect;
- uint16 oam_tdaddr;
- } cache;
- alwaysinline bool interlace() const { return display.interlace; }
- alwaysinline bool overscan() const { return display.overscan; }
- alwaysinline bool hires() const { return (regs.pseudo_hires || regs.bg_mode == 5 || regs.bg_mode == 6); }
- uint16 get_vram_address();
- uint8 vram_mmio_read (uint16 addr);
- void vram_mmio_write (uint16 addr, uint8 data);
- uint8 oam_mmio_read (uint16 addr);
- void oam_mmio_write (uint16 addr, uint8 data);
- uint8 cgram_mmio_read (uint16 addr);
- void cgram_mmio_write(uint16 addr, uint8 data);
- void mmio_w2100(uint8 value); //INIDISP
- void mmio_w2101(uint8 value); //OBSEL
- void mmio_w2102(uint8 value); //OAMADDL
- void mmio_w2103(uint8 value); //OAMADDH
- void mmio_w2104(uint8 value); //OAMDATA
- void mmio_w2105(uint8 value); //BGMODE
- void mmio_w2106(uint8 value); //MOSAIC
- void mmio_w2107(uint8 value); //BG1SC
- void mmio_w2108(uint8 value); //BG2SC
- void mmio_w2109(uint8 value); //BG3SC
- void mmio_w210a(uint8 value); //BG4SC
- void mmio_w210b(uint8 value); //BG12NBA
- void mmio_w210c(uint8 value); //BG34NBA
- void mmio_w210d(uint8 value); //BG1HOFS
- void mmio_w210e(uint8 value); //BG1VOFS
- void mmio_w210f(uint8 value); //BG2HOFS
- void mmio_w2110(uint8 value); //BG2VOFS
- void mmio_w2111(uint8 value); //BG3HOFS
- void mmio_w2112(uint8 value); //BG3VOFS
- void mmio_w2113(uint8 value); //BG4HOFS
- void mmio_w2114(uint8 value); //BG4VOFS
- void mmio_w2115(uint8 value); //VMAIN
- void mmio_w2116(uint8 value); //VMADDL
- void mmio_w2117(uint8 value); //VMADDH
- void mmio_w2118(uint8 value); //VMDATAL
- void mmio_w2119(uint8 value); //VMDATAH
- void mmio_w211a(uint8 value); //M7SEL
- void mmio_w211b(uint8 value); //M7A
- void mmio_w211c(uint8 value); //M7B
- void mmio_w211d(uint8 value); //M7C
- void mmio_w211e(uint8 value); //M7D
- void mmio_w211f(uint8 value); //M7X
- void mmio_w2120(uint8 value); //M7Y
- void mmio_w2121(uint8 value); //CGADD
- void mmio_w2122(uint8 value); //CGDATA
- void mmio_w2123(uint8 value); //W12SEL
- void mmio_w2124(uint8 value); //W34SEL
- void mmio_w2125(uint8 value); //WOBJSEL
- void mmio_w2126(uint8 value); //WH0
- void mmio_w2127(uint8 value); //WH1
- void mmio_w2128(uint8 value); //WH2
- void mmio_w2129(uint8 value); //WH3
- void mmio_w212a(uint8 value); //WBGLOG
- void mmio_w212b(uint8 value); //WOBJLOG
- void mmio_w212c(uint8 value); //TM
- void mmio_w212d(uint8 value); //TS
- void mmio_w212e(uint8 value); //TMW
- void mmio_w212f(uint8 value); //TSW
- void mmio_w2130(uint8 value); //CGWSEL
- void mmio_w2131(uint8 value); //CGADDSUB
- void mmio_w2132(uint8 value); //COLDATA
- void mmio_w2133(uint8 value); //SETINI
- uint8 mmio_r2134(); //MPYL
- uint8 mmio_r2135(); //MPYM
- uint8 mmio_r2136(); //MPYH
- uint8 mmio_r2137(); //SLHV
- uint8 mmio_r2138(); //OAMDATAREAD
- uint8 mmio_r2139(); //VMDATALREAD
- uint8 mmio_r213a(); //VMDATAHREAD
- uint8 mmio_r213b(); //CGDATAREAD
- uint8 mmio_r213c(); //OPHCT
- uint8 mmio_r213d(); //OPVCT
- uint8 mmio_r213e(); //STAT77
- uint8 mmio_r213f(); //STAT78
- uint8 mmio_read(unsigned addr);
- void mmio_write(unsigned addr, uint8 data);
- void latch_counters();
- //PPU render functions
- #include "bppu_render.hpp"
- uint16 light_table_b[16][32];
- uint16 light_table_gr[16][32 * 32];
- uint16 mosaic_table[16][4096];
- void render_line();
- void update_oam_status();
- //required functions
- void run();
- void scanline();
- void render_scanline();
- void frame();
- void power();
- void reset();
- bPPU();
- ~bPPU();
- };
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