mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-02-24 07:02:27 +01:00
6d9f43a37b
byuu says: Changelog: - GBA: lots of emulation improvements - PPU PRAM is 16-bits wide - DMA masks &~1/Half, &~3/Word - VRAM OBJ 8-bit writes are ignored - OAM 8-bit writes are ignored - BGnCNT unused bits are writable* - BG(0,1)CNT can't set the d13 - BLDALPHA is readable (fixes Donkey Kong Country, etc) - SNES: lots of code cleanups - sfc/chip => sfc/coprocessor - UI: save most recent controller selection GBA test scores: 1552/1552, 37/38, 1020/1260 (* forgot to add the value to the read function, so endrift's I/O tests for them will fail. Fixed locally.) Note: SNES is the only system with multiple controller/expansion port options, and as such is the only one with a "None" option. Because it's shared by the controller and expansion port, it ends up sorted first in the list. This means that on your first run, you'll need to go to Super Famicom->Controller Port 1 and select "Gamepad", otherwise input won't work. Also note that changing the expansion port device requires loading a new cart. Unlike controllers, you aren't meant to hotplug expansion port devices.
83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
struct Background {
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struct ID { enum : uint { BG1, BG2, BG3, BG4 }; };
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const uint id;
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struct Mode { enum : uint { BPP2, BPP4, BPP8, Mode7, Inactive }; };
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struct ScreenSize { enum : uint { Size32x32, Size32x64, Size64x32, Size64x64 }; };
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struct TileSize { enum : uint { Size8x8, Size16x16 }; };
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struct Screen { enum : uint { Main, Sub }; };
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Background(PPU& self, uint id);
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struct Regs {
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uint16 tiledata_addr;
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uint16 screen_addr;
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uint2 screen_size;
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uint4 mosaic;
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bool tile_size;
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uint mode;
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uint priority0;
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uint priority1;
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bool main_enable;
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bool sub_enable;
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uint16 hoffset;
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uint16 voffset;
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} regs;
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struct Cache {
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uint16 hoffset;
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uint16 voffset;
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} cache;
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alwaysinline auto voffset() const -> uint;
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alwaysinline auto hoffset() const -> uint;
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struct Output {
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struct Pixel {
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uint priority; //0 = none (transparent)
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uint8 palette;
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uint16 tile;
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} main, sub;
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} output;
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struct Mosaic : Output::Pixel {
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uint vcounter;
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uint voffset;
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uint hcounter;
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uint hoffset;
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} mosaic;
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struct {
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int x;
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int y;
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uint tile_counter;
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uint tile;
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uint priority;
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uint palette_number;
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uint palette_index;
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uint8 data[8];
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};
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auto frame() -> void;
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auto scanline() -> void;
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auto begin() -> void;
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auto run(bool screen) -> void;
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auto reset() -> void;
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auto get_tile() -> void;
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auto get_tile_color() -> uint;
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auto get_tile(uint x, uint y) -> uint;
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alwaysinline auto clip(int n) -> int;
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auto begin_mode7() -> void;
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auto run_mode7() -> void;
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auto serialize(serializer&) -> void;
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PPU& self;
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friend class PPU;
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};
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