ファミコンエミュレータの創り方

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1. CVJMEFSTDPO
   UPLZP
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   ͷ૑Γํ !CPLVXFC
2. !CPLVXFC IUUQCMPHCPLVXFCNF w ૊ΈࠐΈϋʔυιϑτ΢ΣΞΤϯδχΞ
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   CPLVXFC ࣗݾ঺հ
3. ͍͞͠ΐʹ !3VTU8FC"TTFNCMZ XJUI
   FNTDSJQUFO Ͱ
   ϑΝϛίϯΤϛϡϨʔλΛ࣮૷ͯ͠Έͨ࿩͠Λ͢ΔηογϣϯͰ͢ !3VTU8FC"TTFNCMZͷجૅ΍ৄࡉʹ͸͋·Γ৮Ε·ͤΜ !ϑΝϛίϯͷϋʔυ΢ΣΞ΍੍໿ɺͦͷΤϛϡϨʔγϣϯํ๏
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11. ϓϩάϥϜ30. "
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12. "
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14. ------- GND -- |01 31| -- +5V CPU A11 -> |02 32| <- M2 CPU A10 -> |03 33| <- CPU A12 CPU A9 -> |04 34| <- CPU A13 CPU A8 -> |05 35| <- CPU A14 CPU A7 -> |06 36| <> CPU D7 CPU A6 -> |07 37| <> CPU D6 CPU A5 -> |08 38| <> CPU D5 CPU A4 -> |09 39| <> CPU D4 CPU A3 -> |10 40| <> CPU D3 CPU A2 -> |11 41| <> CPU D2 CPU A1 -> |12 42| <> CPU D1 CPU A0 -> |13 43| <> CPU D0 CPU R/W -> |14 44| <- /ROMSEL (/A15 + /M2) /IRQ <- |15 45| <- Audio from 2A03 GND -- |16 46| -> Audio to RF PPU /RD -> |17 47| <- PPU /WR CIRAM A10 <- |18 48| -> CIRAM /CE PPU A6 -> |19 49| <- PPU /A13 PPU A5 -> |20 50| <- PPU A7 PPU A4 -> |21 51| <- PPU A8 PPU A3 -> |22 52| <- PPU A9 PPU A2 -> |23 53| <- PPU A10 PPU A1 -> |24 54| <- PPU A11 PPU A0 -> |25 55| <- PPU A12 PPU D0 <> |26 56| <- PPU A13 PPU D1 <> |27 57| <> PPU D7 PPU D2 <> |28 58| <> PPU D6 PPU D3 <> |29 59| <> PPU D5 +5V -- |30 60| <> PPU D4 ------- ΧηοτͷίωΫλϐϯ഑ྻΛݟΔͱ
    $16
    
    116ͷCJUόε৴߸͕ͦΕͧΕ઀ଓ͞Ε͍ͯΔ Χηοτͷϐϯ഑ྻ $16ͷόε৴߸ 116ͷόε৴߸
15. ΩϟϥΫλʔ 30. 116 $16 ϑΝϛίϯຊମ ϓϩάϥϜ 30. Χηοτ $16όεΛհͯ͠
    Ϧʔυ͞ΕΔ 116όεΛհͯ͠
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16. ϓϩάϥϜ30.ͱ͸
17. ήʔϜϓϩάϥϜ͕֨ೲ͞Εͨ30.
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18. ΩϟϥΫλʔ30.ͱ͸
19. ºͷήʔϜը૾͕֨ೲ͞Εͨ30.ʢ࠷େ,J#ʣ
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20. ՄࢹԽͯ͠ΈΔͱ
21. ҎԼ͸ઌఔͷσϞʮGBMMJOHʯͷΩϟϥΫλʔ30.ͷத਎ ΩϟϥΫλʔ30.ͱ͸
22. ̔#ZUFº#ZUFͰºαΠζͷը૾͕දݱ͞ΕΔ
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24. J/&4ϑΥʔϚοτ
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26. ·ͣ͸ OFTΛಡΜͰղੳͯ͠
    ֤30.Λ੾Γग़ͯ͠΍Δඞཁ͕͋Δ
27. XBTN͔ΒOFTϑΝΠϧΛಡΉͷ͸େม
    ࠓճ͸+BWB4DSJQUଆͰ OFTϑΝΠϧΛ
    GFUDIͯ͠3VTU XBTN ଆʹҾ͖౉͢͜ͱʹͨ͠
28. const run = Module.cwrap("run", null, ["number", "number"]); const res = await fetch("./PATH_TO_NES_FILE.nes"); const arrayBuf = await res.arrayBuffer(); const nes = new Uint8Array(arrayBuf); const size = nes.byteLength; const ptr = Module._malloc(size); const buf = new Uint8Array(Module.HEAPU8.buffer, ptr, size); buf.set(nes); run(size, buf.byteOffset); +BWB4DSJQUଆͷॳظԽॲཧ 3VTUଆͷؔ਺Λ+4
    ͔Βݺ΂ΔΑ͏ʹ ͜Ε͸Ҿ਺
29. const run = Module.cwrap("run", null, ["number", "number"]); const res = await fetch("./PATH_TO_NES_FILE.nes"); const arrayBuf = await res.arrayBuffer(); const nes = new Uint8Array(arrayBuf); const size = nes.byteLength; const ptr = Module._malloc(size); const buf = new Uint8Array(Module.HEAPU8.buffer, ptr, size); buf.set(nes); run(size, buf.byteOffset); +BWB4DSJQUଆͷॳظԽॲཧ OFTϑΝΠϧΛϑΣον ͯ͠"SSBZ#VGGFSʹม׵
30. const run = Module.cwrap("run", null, ["number", "number"]); const res = await fetch("./PATH_TO_NES_FILE.nes"); const arrayBuf = await res.arrayBuffer(); const nes = new Uint8Array(arrayBuf); const size = nes.byteLength; const ptr = Module._malloc(size); const buf = new Uint8Array(Module.HEAPU8.buffer, ptr, size); buf.set(nes); run(size, buf.byteOffset); +BWB4DSJQUଆͷॳظԽॲཧ OFTϑΝΠϧ෼ͷྖҬΛ
    NBMMPDͰ֬อ
    ʢFNTDSJQUFOΛ࢖༻ͨ͠৔߹ .PEVMFʹੜ͑ͯΔʣ
    +4ଆ͔Β͸XBTNଆͷϝϞϦ͸"SSBZ#VGGFS ʹݟ͑ΔͷͰCZUF0GGTFUΛJ/&4σʔλͷઌ಄ ʢ͢ͳΘͪϙΠϯλʣͱͯ͠αΠζͱҰॹʹڭ͑ ͯ΍Δ
31. #[no_mangle] pub fn run(len: usize, ptr: *mut u8) { let buf: &mut [u8] = unsafe { std::slice::from_raw_parts_mut(ptr, len + 1) }; let cassette = parse(buf); let prom = Rom::new(cassette.program_rom); let crom = Rom::new(cassette.character_rom); // ... লུ …. } pub fn parse(buf: &mut [u8]) -> Cassette { let program_rom_pages = buf[4] as usize; let character_rom_pages = buf[5] as usize; let character_rom_start = NES_HEADER_SIZE + program_rom_pages * PROGRAM_ROM_SIZE; let character_rom_end = character_rom_start + character_rom_pages * CHARACTER_ROM_SIZE; Cassette { program_rom: buf[NES_HEADER_SIZE..character_rom_start].to_vec(), character_ram: buf[character_rom_start..character_rom_end].to_vec(), } } 3VTU XBTN ଆͷॳظԽॲཧ +4ଆ͔ΒJ/&4σʔλͷ
    αΠζͱϙΠϯλΛ΋Β͏
    QBSTF֤ͯ͠30.Λ෼཭
    ޙड़͢Δ$16͕ϓϩάϥϜ30.
    ͷ಺༰Λ࣮ߦ͢Ε͹ήʔϜ͕։࢝͢Δʣ
32. #[no_mangle] pub fn run(len: usize, ptr: *mut u8) { let buf: &mut [u8] = unsafe { std::slice::from_raw_parts_mut(ptr, len + 1) }; let cassette = parse(buf); let prom = Rom::new(cassette.program_rom); let crom = Rom::new(cassette.character_rom); // ... লུ …. } pub fn parse(buf: &mut [u8]) -> Cassette { let program_rom_pages = buf[4] as usize; let character_rom_pages = buf[5] as usize; let character_rom_start = NES_HEADER_SIZE + program_rom_pages * PROGRAM_ROM_SIZE; let character_rom_end = character_rom_start + character_rom_pages * CHARACTER_ROM_SIZE; Cassette { program_rom: buf[NES_HEADER_SIZE..character_rom_start].to_vec(), character_ram: buf[character_rom_start..character_rom_end].to_vec(), } } 3VTU XBTN ଆͷॳظԽॲཧ J/&4ϔομͷ৘ใ͔Β
    ֤30.Λ੾Γग़͢
    
33. build: mkdir -p wasm rm -rf target/wasm32-unknown-emscripten/release/deps/*.wasm rm -rf target/wasm32-unknown-emscripten/release/rustynes.js cargo rustc --release \ --target=wasm32-unknown-emscripten -- \ -C opt-level=3 \ -C link-args="-O3 -s -s EXPORTED_FUNCTIONS=['_run'] -s EXTRA_EXPORTED_RUNTIME_METHODS=['cwrap']" \ --verbose cp target/wasm32-unknown-emscripten/release/rustynes.js wasm/rustynes.js cp target/wasm32-unknown-emscripten/release/deps/*.wasm wasm/rustynes.wasm wasm-gc wasm/rustynes.wasm wasm/rustynes.wasm ϏϧυίϚϯυ +4ଆʹFYQPSU͢Δؔ਺Λ
    ࢦఆͯ͠΍Δඞཁ͕͋Δ
34. ϝϞϦʢ3".
    
    30.ʣ
35. pub struct Ram { pub field: Vec<u8>, } impl Ram { pub fn new(buf: Vec<u8>) -> Ram { Ram { field: buf } } pub fn read(&self, addr: u16) -> u8 { self.field[addr as usize] } pub fn write(&mut self, addr: u16, data: u8) { self.field[addr as usize] = data; } } 3".ͷ࣮૷
36. $16͕ϝϞϦʹͲͷΑ͏ʹ
    ΞΫηε͢Δ͔஌ͬͯ·͔͢ʁ ׂ Ѫ
37. ͲͷΑ͏ʹϝϞϦʹ
    ΞΫηε͢Δͷ͔ݟͯΈΔ ׂ Ѫ
38. ΞυϨε νοϓηϨΫτ Ϧʔυ σʔλ Y%&"% Y#& 43".ͷY%&"%൪஍ʹϦʔυΞΫηεΛߦ͍Y#&͕ಡΈग़͞ΕΔྫ 43".ͷϦʔυλΠϛϯάྫ όεʹ͸ଞʹ΋༷ʑͳσόΠε͕઀ଓ͞ΕΔ
    Մೳੑ͕͋ΔͷͰͲͷσόΠε͕༗ޮ͔ࣔ͢৴߸ νοϓηϨΫτɺΞυϨεɺϦʔυ৴߸ͳͲ
    Ϧʔυʹඞཁͳ৴߸͕ଗ͏ͱ3".͔Βσʔλ
    ׂ Ѫ
39. ΞυϨε νοϓηϨΫτ Ϧʔυ σʔλ Y%&"% Y#& 43".ͷY%&"%൪஍ʹϦʔυΞΫηεΛߦ͍Y#&͕ಡΈग़͞ΕΔྫ 43".ͷϦʔυλΠϛϯάྫ ͜ͷλΠϛϯάͰY#&Λϥον͢Δ
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    $16ΫϩοΫͷ্ཱ͕ͪΓͰऔΓࠐ·ΕΔ΋ͷ͕ଟ͍ σόΠεʹϓϦϯτ͞Ε͍ͯΔ਺ࣈ͸͍͍ͩͨ͜͜ͷ਺ࣈ ʢDZDMF खݩͷ30.͸ͳͷͰ
    DZDMFOTҎ্ʹͯ͠Ͷͱ͍͏ҙຯ ׂ Ѫ
40. ͢ͳΘͪɺ͜ΕΒͷ৴߸ΛλΠϛϯάΛकΓͭͭ
    ༩͑ͯ΍Ε͹Χηοτͷ30.͔Βσʔλ͕ಡΊΔ ׂ Ѫ
41. $16
42. w "QQMF
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    ϑΝϛίϯͷ$16
43. $16ͷϨδελҰཡ ໊শ αΠζ ৄࡉ " CJU ΞΩϡϜϨʔλ 9 CJU ΠϯσοΫεϨδελ : CJU ΠϯσοΫεϨδελ 4 CJU ελοΫϙΠϯλ 1 CJU εςʔλεϨδελ 1$ CJU ϓϩάϥϜΧ΢ϯλ ελοΫϙΠϯλ͸ϏοτͷΞυϨεۭؒΛࢦ͢ඞཁ͕͋Δ͕
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    ʢ83".ͷ͏ͪYʙY''ׂ͕Γ౰ͯΒΕΔʣ
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    ԋࢉ͸"ϨδελͰߦΘΕɺ9 :Ϩδελ͸ΠϯσοΫεʹ࢖༻͞ΕΔ

44. εςʔλεϨδελ CJU ໊শ ৄࡉ ಺༰ CJU / ωΨςΟϒ ԋࢉ݁ՌͷCJU͕ͷ࣌ʹηοτ CJU 7 Φʔόʔϑϩʔ 1ԋࢉ݁Ռ͕ΦʔόʔϑϩʔΛىͨ࣌͜͠ʹηο τ CJU 3 ༧໿ࡁΈ ৗʹηοτ͞Ε͍ͯΔ CJU # ϒϨʔΫϞʔυ #3,ൃੜ࣌ʹηοτɺ*32ൃੜ࣌ʹΫϦΞ CJU % σγϚϧϞʔυ σϑΥϧτɺ#$%Ϟʔυ
    ະ࣮૷ CJU * *32ېࢭ *32ڐՄɺ*32ېࢭ CJU ; θϩ ԋࢉ݁Ռ͕ͷ࣌ʹηοτ CJU $ ΩϟϦʔ ΩϟϦʔൃੜ࣌ʹηοτ εςʔλεϨδελͷৄࡉ
    CJU͸ৗʹͰɺCJU͸/&4Ͱ͸ະ࣮૷
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45. struct Status { negative: bool, overflow: bool, reserved: bool, break_mode: bool, decimal_mode: bool, interrupt: bool, zero: bool, carry: bool, } #[allow(non_snake_case)] pub struct Registers { A: u8, X: u8, Y: u8, SP: u8, PC: u16, P: Status, } $16ͷϨδελͷ࣮૷
46. ΞυϨε αΠζ ༻్ YʙY'' Y 83". YʙY'''  83".ͷϛϥʔ YʙY Y 116
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    ϓϩάϥϜ30.
47. impl<'a> CpuBus for Bus<'a> { fn read_word(&mut self, addr: u16) -> u16 { // …লུ… } fn read(&mut self, addr: u16) -> u8 { match addr { 0x0000...0x07FF => self.work_ram.read(addr), 0x0800...0x1FFF => self.work_ram.read(addr - 0x0800), 0x2000...0x3FFF => self.ppu.read(addr - 0x2000), 0x4016 => self.keypad.read(), 0x4017 => unimplemented!(), // 2player controller 0x4000...0x401F => self.apu.read(addr - 0x4000), 0x6000...0x7FFF => unimplemented!(), // battery back up ram 0x8000...0xBFFF => self.program_rom.read(addr - 0x8000), 0xC000...0xFFFF if self.program_rom.size() <= 0x4000 => self.program_rom.read(addr - 0xC000) 0xC000...0xFFFF => self.program_rom.read(addr - 0x8000), _ => panic!("[READ] There is an illegal address. (0x{:x}) access detected.", addr), } } fn write(&mut self, addr: u16, data: u8) { // …লུ… } } $16͸$QV#VTϞδϡʔϧΛհ֤ͯ͠σόΠεʹΞΫηε͢ΔΑ͏ʹ $16όεͷ࣮૷ ϝϞϦϚοϓΛ൓ө
48. $16͸Ͳͷ൪஍͔Β
    ͲͷλΠϛϯάͰىಈ͢Δ͔
49. ׂΓࠐΈ
50. ׂΓࠐΈ͕ൃੜ͢Δͱ$16͸ݱࡏͷ
    ίϯςΩετΛελοΫʹୀආ͠
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    ʹ֨ೲ͞Εͨ൪஍ΑΓ࣮ߦ։࢝ʢ࠶։ʣ͢Δ ͷׂΓࠐΈ
51. ͨͱ͑͹ɺϦηοτʢϑΝϛίϯͷ࢛֯ͷϘλϯͰ͢Ͷʣ΋ׂΓࠐΈͷҰछͰ
    Ϧηοτ͕ൃੜͨ͠৔߹Y'''$ɺY'''%͔ΒCJUͷΞυϨεΛϦʔυ͠
    1$ʢϓϩάϥϜΧ΢ϯλʣʹηοτ͠ɺηοτ͞ΕͨΞυϨε͔Β࣮ߦ͠·͢
    ׂΓࠐΈ ԼҐόΠτ ্ҐόΠτ ֓ཁ /.* Y'''" Y'''# ϊϯϚεΧϥϒϧׂΓࠐΈͱݴͬͯ$16͸ଆͰϚεΫͰ͖ͳ ׂ͍ΓࠐΈͰ͢ɻ116ͷׂΓࠐΈग़ྗ৴߸͕઀ଓ͞Ε͍ͯ· ͢ 3&4&5 Y'''$ Y'''% ϦηοτϘλϯԡԼ࣌΍ిݯ౤ೖ࣌ʹ͔͔ΔׂΓࠐΈͰ͢ *32ɺ#3, Y'''& Y'''' #3,͸ιϑτ΢ΣΞׂΓࠐΈͰ#3,໋ྩΛ࣮ߦͨ͠ͱ͖ʹൃ ੜ͠·͢ɻ*32͸"16΍Χηοτʹ઀ଓ͞Ε͍ͯ·͢ ͷ৔߹ҎԼͷΑ͏ͳׂΓࠐΈཁҼ͕༻ҙ͞Ε͍ͯ·͢
    ͷׂΓࠐΈ
52. ϦηοτׂΓࠐΈͷ৔߹
53. pub fn reset<T: CpuRegisters, U: CpuBus>(registers: &mut T, bus: &mut U) { let pc = bus.read_word(0xFFFC); registers.set_PC(pc); } جຊతʹ͸ϓϩάϥϜ30.͸Yʹ഑ஔ͞Ε͍ͯΔͷͰ
    Y'''$͔ΒYɺY'''%͔ΒY͕Ϧʔυ͞ΕΔέʔε͕ଟ͍
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    Y'''%ΛԼҐόΠτ
    ͱͨ͠CJUΛϦʔυ Ϧʔυ͞ΕͨCJUͷΞυϨεΛ
    1$ʢϓϩάϥϜΧ΢ϯλʣʹηοτ
    ࣍αΠΫϧ͸ηοτͨ͠ΞυϨε͔Β࣮ߦ͞ΕΔ
54. /.*ͷ৔߹
55. pub fn process_nmi<T: CpuRegisters, U: CpuBus>(registers: &mut T, bus: &mut U) { registers.set_break(false); push((registers.get_PC() >> 8) as u8, registers, bus); push(registers.get_PC() as u8, registers, bus); push_status(registers, bus); registers.set_interrupt(true); let next = bus.read_word(0xFFFA); registers.set_PC(next); } /.*ͷ࣮૷ 1$ͷ্ҐCJUɺ1$ͷԼҐCJU
    ͷॱʹελοΫʹ164)
56. pub fn process_nmi<T: CpuRegisters, U: CpuBus>(registers: &mut T, bus: &mut U) { registers.set_break(false); push((registers.get_PC() >> 8) as u8, registers, bus); push(registers.get_PC() as u8, registers, bus); push_status(registers, bus); registers.set_interrupt(true); let next = bus.read_word(0xFFFA); registers.set_PC(next); } /.*ͷ࣮૷ εςʔλεϨδελΛ
    ελοΫʹ164)
57. pub fn process_nmi<T: CpuRegisters, U: CpuBus>(registers: &mut T, bus: &mut U) { registers.set_break(false); push((registers.get_PC() >> 8) as u8, registers, bus); push(registers.get_PC() as u8, registers, bus); push_status(registers, bus); registers.set_interrupt(true); let next = bus.read_word(0xFFFA); registers.set_PC(next); } /.*ͷ࣮૷ Y'''"
    Y'''#͔ΒΞυϨεΛ
    Ϧʔυ͠1$ʹηοτ
    
58. ྫ͑͹/.*લͷ1$͕YɺεςʔλεϨδελ͕Y""
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59. ͷ໋ྩ
60. Ͱ͸"%$ Ճࢉ
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61. ͨͱ͑͹
62. Y"͸-%"ͱ͍͏Ϩδελ"ʹ஋Λϩʔυ͢Δϩʔυ໋ྩͱ
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63. ུশ ໊લ ֓ཁ JNQM *NQMJFE ϨδελΛૢ࡞͢Δ " "DDVNVMBUPS "ϨδελΛૢ࡞͢Δ  *NNFEJBUF Φϖίʔυ͕֨ೲ͞Ε͍ͯͨ࣍ͷ൪஍ʹ֨ೲ͞Ε͍ͯΔ஋Λσʔλͱͯ͠ѻ͏ [QH ;FSP
    QBHF YΛ্ҐΞυϨεɺ1$ʢΦϖίʔυͷ࣍ͷ൪஍ʣʹ֨ೲ͞Εͨ஋ΛԼҐΞυϨεͱͨ͠൪஍Λԋ ࢉର৅ͱ͢Δ [QH 9
    [QH : ;FSP
    QBHF
    JOEFYFE YΛ্ҐΞυϨεɺ1$ʢΦϖίʔυͷ࣍ͷ൪஍ʣʹ֨ೲ͞Εͨ஋ʹ9Ϩδελ·ͨ͸:Ϩδελ ΛՃࢉͨ͠஋ΛԼҐΞυϨεͱͨ͠൪஍Λԋࢉର৅ͱ͢Δ BCT "CTPMVUF 1$ʢΦϖίʔυͷ࣍ͷ൪஍ʣʹ֨ೲ͞Εͨ஋ΛԼҐΞυϨεɺ1$ʢΦϖίʔυͷ࣍ͷ࣍ͷ൪஍ʣʹ ֨ೲ͞Εͨ஋Λ্ҐΞυϨεͱͨ͠൪஍Λԋࢉର৅ͱ͢Δ BCT 9
    BCT : "CTPMVUF
    JOEFYFE "CTPMVUF
    "EESFTTJOHͰಘΒΕΔ஋ʹ9Ϩδελ·ͨ͸:ϨδελΛՃࢉͨ͠൪஍Λԋࢉର৅ͱ͢Δ SFM 3FMBUJWF 1$ʢΦϖίʔυͷ࣍ͷ൪஍ʣʹ֨ೲ͞Εͨ஋ͱͦͷ࣍ͷ൪஍ΛՃࢉͨ͠൪஍Λԋࢉର৅ͱ͢Δ 9 *OE *OEFYFE
    *OEJSFDU YΛ্ҐΞυϨεɺ1$ʢΦϖίʔυͷ࣍ͷ൪஍ʣʹ֨ೲ͞Εͨ஋ΛԼҐΞυϨεͱͨ͠൪஍ʹϨ δελ9ͷ஋ΛՃࢉɺͦͷ൪஍ͷ஋ΛԼҐΞυϨεɺͦͷ࣍ͷ൪஍ͷ஋Λ্ҐΞυϨεͱͨ͠൪஍Λ ԋࢉର৅ͱ͢Δ *OE : *OEJSFDU
    JOEFYFE YΛ্ҐΞυϨεɺ1$ʢΦϖίʔυͷ࣍ͷ൪஍ʣʹ֨ೲ͞Εͨ஋ΛԼҐΞυϨεͱͨ͠൪஍ͷ஋ ΛԼҐΞυϨεɺͦͷ࣍ͷ൪஍ͷ஋Λ্ҐΞυϨεͱͨ͠൪஍ʹϨδελ:ΛՃࢉͨ͠൪஍Λԋࢉର ৅ͱ͢Δ *OE "CTPMVUF
    JOEFYFE "CTPMVUF
    "EESFTTJOHͰಘΒΕΔ൪஍ʹ֨ೲ͞Ε͍ͯΔ஋ΛԼҐΞυϨεɺͦͷ࣍ͷ൪஍ʹ֨ೲ͞ Ε͍ͯΔ஋Λ্ҐΞυϨεͱͨ͠൪஍Λԋࢉର৅ͱ͢Δ ΞυϨογϯάϞʔυ
64. ໋ྩද
65. ଟ͍
66. ໋͍͔ͭ͘ྩΛϐοΫΞοϓ
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67. -%"
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68. Yʹ
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
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    ʹϩʔυ͢Δ 1$
69. pub fn lda_imm<T: CpuRegisters>(operand: Word, registers: &mut T) { registers .set_A(operand as Data) .update_negative_by(operand as Data) .update_zero_by(operand as Data); } #[test] fn test_lda_immediate() { let mut reg = Registers::new(); lda_imm(0xA5, &mut reg); assert_eq!(reg.get_A(), 0xA5); } ଈ஋Λ"Ϩδελʹϩʔυ͢Δ -%"
    JNN "ϨδελʹΦϖϥϯυ
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71. Yʹ
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
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72. pub fn lda<T: CpuRegisters, U: CpuBus>(operand: Word, registers: &mut T, bus: &mut U) { let computed = bus.read(operand); registers .set_A(computed) .update_negative_by(computed) .update_zero_by(computed); } #[test] fn test_lda() { let mut reg = Registers::new(); let mut bus = MockBus::new(); bus.mem[0xAA] = 0xA5; lda(0xAA, &mut reg, &mut bus); assert_eq!(reg.get_A(), 0xA5); } -%"
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73. ͜͜·Ͱͷ$16ͷಈ࡞Λ·ͱΊΔͱ
74. Ϧηοτ ແ͠ ແ͠ ༗Γ ༗Γ ׂΓࠐΈ ༗ແ Φϖϥϯυ ༗ແ Ϩδελͷ ঢ়ଶΛୀආ 1$͔Β໋ྩ ΛϑΣον 1$ 1$͔ΒΦϖϥϯυΛ ϑΣον 1$ ໋ྩΛ࣮ߦ ׂΓࠐΈϕΫλ ͷ஋Λ1$ ʹηοτ $16ͷಈ࡞Πϝʔδ Y'''$'''%ʹ
    ֨ೲ͞Εͨ൪஍͔Β։࢝
75. pub fn run<T: CpuRegisters + Debug, U: CpuBus>( registers: &mut T, bus: &mut U, nmi: &mut bool, ) -> Data { if *nmi { process_nmi(registers, bus); *nmi = false; } let code = fetch(registers, bus); let ref map = opecode::MAP; let code = &*map.get(&code).unwrap(); let operand = fetch_operand(&code, registers, bus); match code.name { Instruction::LDA if code.mode == Addressing::Immediate => lda_imm(operand, registers), Instruction::LDA => lda(operand, registers, bus), // …লུ… } code.cycle } $16ͷ࣮૷
    ׂΓࠐΈͷνΣοΫ
76. pub fn run<T: CpuRegisters + Debug, U: CpuBus>( registers: &mut T, bus: &mut U, nmi: &mut bool, ) -> Data { if *nmi { process_nmi(registers, bus); *nmi = false; } let code = fetch(registers, bus); let ref map = opecode::MAP; let code = &*map.get(&code).unwrap(); let operand = fetch_operand(&code, registers, bus); match code.name { Instruction::LDA if code.mode == Addressing::Immediate => lda_imm(operand, registers), Instruction::LDA => lda(operand, registers, bus), // …লུ… } code.cycle } $16ͷ࣮૷
    1$͔Β໋ྩΛϑΣον
    σίʔυ
    
    ࣙॻ͔Β໋ྩͷछผɾΞυϨογϯά ϞʔυɺαΠΫϧ਺ͳͲΛҾ͍ͯ͘Δ
    
77. $16ͷ࣮૷ let mut m = HashMap::new(); m.insert(0xA9, Opecode { name: Instruction::LDA, mode: Addressing::Immediate, cycle: cycles[0xA9] }); m.insert(0xA5, Opecode { name: Instruction::LDA, mode: Addressing::ZeroPage, cycle: cycles[0xA5] }); m.insert(0xB5, Opecode { name: Instruction::LDA, mode: Addressing::ZeroPageX, cycle: cycles[0xB5] }); m.insert(0xAD, Opecode { name: Instruction::LDA, mode: Addressing::Absolute, cycle: cycles[0xAD] }); m.insert(0xBD, Opecode { name: Instruction::LDA, mode: Addressing::AbsoluteX, cycle: cycles[0xBD] }); m.insert(0xB9, Opecode { name: Instruction::LDA, mode: Addressing::AbsoluteY, cycle: cycles[0xB9] }); m.insert(0xA2, Opecode { name: Instruction::LDX, mode: Addressing::Immediate, cycle: cycles[0xA2] }); m.insert(0xA6, Opecode { name: Instruction::LDX, mode: Addressing::ZeroPage, cycle: cycles[0xA6] }); // …লུ… ΞυϨογϯάϞʔυ΍αΠΫϧ਺
    Λ൑ผ
    
78. pub fn run<T: CpuRegisters + Debug, U: CpuBus>( registers: &mut T, bus: &mut U, nmi: &mut bool, ) -> Data { if *nmi { process_nmi(registers, bus); *nmi = false; } let code = fetch(registers, bus); let ref map = opecode::MAP; let code = &*map.get(&code).unwrap(); let operand = fetch_operand(&code, registers, bus); match code.name { Instruction::LDA if code.mode == Addressing::Immediate => lda_imm(operand, registers), Instruction::LDA => lda(operand, registers, bus), // …লུ… } code.cycle } $16ͷ࣮૷
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81. ςετ30.Λ࢖༻͢Δ
82. OFTUFTUOFT
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85. 116ͷϝϞϦϚοϓ
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89. ωʔϜςʔϒϧ
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93. ଐੑςʔϒϧ
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    λΠϧ ϒϩοΫ λΠϧ ϒϩοΫ     ͜ͷϒϩοΫ Y ͸
    ͳͷͰ
    
    
    
    
    
    
    
    
    
    
    
    ͕
    ࢖༻Ͱ͖Δ ύϨοτ
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    ͜ͷϒϩοΫ͸ ͜ͷϒϩοΫ͸ ͜ͷϒϩοΫ͸ ଐੑςʔϒϧͱ͸
96. ύϨοτςʔϒϧ
97. എܠ༻ʹ৭ͷύϨοτ͕ͭʢY'ʙY''ʣ
    εϓϥΠτ༻ʹ̐৭ͷύϨοτ͕ͭʢY'ʙY''ʣ
    ༻ҙ͞Ε͍ͯΔ
    ͨͩ͠ɺ֤എܠ༻ύϨοτͷઌ಄ͷ৭͸എܠ৭
    ֤εϓϥΠτ༻ύϨοτͷઌ಄ͷ৭͸ಁ໌ͱͯ͠ѻΘΕΔ
    ಉ࣌ʹ࢖༻Ͱ͖Δ৭͸എܠ༻͸࠷େ৭
    εϓϥΠτ༻͸࠷େ৭ಉ࣌ʹ࢖༻Ͱ͖Δ
    ύϨοτςʔϒϧͱ͸
98. ͨͱ͑͹εύʔϚϦΦϒϥβʔεͷΦʔϓχϯάը໘͸ҎԼͷΑ͏ͳ
    ύϨοτ͕ઃఆ͞Ε͍ͯΔ
    ύϨοτ
    
    Y' ύϨοτ
    Y' ύϨοτ
    Y' ύϨοτ
    Y'$ ύϨοτ
    Y' ύϨοτ
    Y' ύϨοτ
    Y' ύϨοτ
    Y'$ എܠ༻ύϨοτʢഎܠ৭৭
    
    ৭
    Y
    ύϨοτͰ৭ʣ εϓϥΠτ༻ύϨοτʢ৭͸ಁ໌৭ͳͷͰ৭
    Y
    ύϨοτͰ৭ʣ ֤ςʔϒϧͷઌ಄
    ͸ಁ໌৭ͱͯ͠
    ѻΘΕΔ ಁ໌৭ ಁ໌৭ ಁ໌৭ ֤ςʔϒϧͷઌ಄
    ͸എܠ৭ എܠ৭ എܠ৭ എܠ৭ ϚϦΦ͸ӈଆͷ৭Ͱදݱ͞Ε͍ͯΔ ύϨοτςʔϒϧͱ͸
99. ஋ͱ৭ͱͷରԠ͸ʁ
100. IUUQTXJLJOFTEFWDPNXJOEFYQIQ116@QBMFUUFTΑΓ ϑΝϛίϯͷ৭͸116͕/54$৴߸Λ௚઀ੜ੒͢Δؔ܎্3(#Ͱ͸ͳ͘
     ً౓ʢϧϛφϯεʣͱ৭౓ʢΫϩϚʣͰදݱ͞ΕΔ
     ͨͱ͑͹εʔύʔϚϦΦϒϥβʔεͷۭͷ৭͸Y͸ҎԼͷΑ͏ͳҙຯΛ΋ͭ Y
     @C
     ৗʹ ً౓ ৭౓ ύϨοτͷ৭ ً౓ ৭౓
101. 116ͷϨδελΛோΊΔ
102. ΞυϨε ֓ཁ Y Y CJU આ໌  7#MBOL࣌ʹׂΓࠐΈΛग़ྗ  ৗʹ̍  εϓϥΠταΠζ
     
     
     Y
     
     
     Y  എܠ༻ύλʔϯςʔϒϧΞυϨε
     
     Y
     
     Y  εϓϥΠτύλʔϯςʔϒϧΞυϨε
     
     Y
     Y  116ΞυϨεΠϯΫϦϝϯτ
     
     
     
       ωʔϜςʔϒϧࢦఆ CJU આ໌  എܠ৭
     C
     ࠇ
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     ੺
  εϓϥΠτΠωʔϒϧ
     
     σΟηʔϒϧ
     
     Πωʔϒϧ  എܠΠωʔϒϧ
     
     
     σΟηʔϒϧ
     
     
     Πωʔϒϧ  εϓϥΠτͷը໘ࠨϐΫηϧඳը
     
     ඳը͠ͳ͍
     
     ඳը͢Δ  എܠͷը໘ࠨϐΫηϧඳը
     
     ඳը͠ͳ͍
     
     ඳը͢Δ  σΟεϓϨΠλΠϓ
     
     
     Χϥʔ
     
     ϞϊΫϩ 116ͷϨδελ 8SJUF
103. ΞυϨε ֓ཁ Y εϓϥΠτϝϞϦΞυϨε
     YΛܦ༝ͯ͠εϓϥΠτϝϞϦ΁ॻ͖ࠐΉϏοτΞυϨεΛࢦఆ Y εϓϥΠτϝϞϦσʔλ
     YʹΑͬͯࢦఆ͞ΕͨεϓϥΠτϝϞϦΞυϨε΁σʔλΛॻ͖ࠐΉɻ
     
     ॻ͖ࠐΉ౓ʹεϓϥΠτϝϞϦΞυϨε͸ΠϯΫϦϝϯτ  ͞ΕΔɻ Y എܠεΫϩʔϧΦϑηοτ
     ճϥΠτΛߦ͏͜ͱͰ9ɺ:ͷॱʹεΫϩʔϧ஋͕ઃఆ͞ΕΔ Y 116"%%3
     116ϝϞϦΞυϨε
     YΛܦ༝ͯ͠116ϝϞϦ΁ॻ͖ࠐΉϏοτΞυϨεΛࢦఆ͢Δɻ
     ্ҐϏοτɺԼҐϏοτͷॱ ʹॻ͖ࠐΉɻ Y 116%"5" 116ϝϞϦσʔλ
     YʹΑͬͯࢦఆ͞Εͨ116ϝϞϦΞυϨε΁σʔλΛॻ͖ࠐΉɻ
     ॻ͖ࠐΉ౓ʹϝϞϦΞυϨε͸Π ϯΫϦϝϯτ YͷϏοτʹΑͬͯ ɺ  ͢Δɻ 116ͷϨδελ 8SJUF
104. ΞυϨε ֓ཁ Y Y εϓϥΠτϝϞϦσʔλ
     YʹΑͬͯࢦఆ͞ΕͨεϓϥΠτϝϞϦΞυϨε΁σʔλΛϦʔυ͢Δ
     Ϧʔυ͢Δ౓ʹεϓϥΠτϝϞϦΞυϨε͸ΠϯΫϦϝϯτ  ͞ΕΔɻ Y 116ϝϞϦσʔλ
     YʹΑͬͯࢦఆ͞Εͨ116ϝϞϦΞυϨεͷσʔλΛϦʔυ͢Δ
     Ϧʔυ͢Δ౓ʹϝϞϦΞυϨε͸ΠϯΫϦϝϯτ YͷϏοτʹΑͬͯ ɺ  ͢Δɻ CJU આ໌  7CMBOL࣌ʹ  εϓϥΠτώοτ࣌ʹ  εΩϟϯϥΠϯεϓϥΠτ਺ɹ
     
     ݸҎԼ
     
     
     
     ݸҎ্  3FTFSWFE 116ͷϨδελ 3FBE
105. ͔͜͜Βॏཁͳ΋ͷΛൈ͖ग़ͯ͠
     ౎౓આ໌͍͖ͯ͠·͢
106. தͰ΋ॏཁͳͷ͸
107. 116"%%3
     
     116%"5"Ϩδελ
108. 116ͷϝϞϦۭؒʢ73".ͳͲʣʹ$16͔ΒಡΈॻ͖͢ΔͨΊͷϨδελ $16 116 116"%%3 116%"5" 73". ΩϟϥΫλʔ30. 73".΍ΩϟϥΫλʔ30.͸116όεʹ઀ଓ͞Ε͓ͯΓ
     $16͔Β͸௚઀ΞΫηεͰ͖ͳ͍
     ͦͷͨΊ116"%%3
     
     116%"5"Λհͯ͠ಡΈॻ͖͢Δ $16όε 116όε 116"%%3
     
     116%"5"Ϩδελ
109. Ͳ͏΍ͬͯ࢖͏͔
110. 116ͷϝϞϦۭؒʢ73".ͳͲʣʹ$16͔ΒಡΈॻ͖͢ΔͨΊͷϨδελ 116"%%3 Y ʹ̎ճॻ͖ࠐΈ͜ͱͰ116ϝϞϦۭؒΛࢦఆ
     ྫ͑͹Y'
     YΛ116"%%3ʹॻ͖ࠐΉ͜ͱͰ
     116ΞυϨε͕Y'ʹηοτ͞ΕΔ 116%"5" Y ʹϦʔυϥΠτ͢Δ͜ͱͰ116"%%3
     Ͱࢦఆͨ͠116ϝϞϦۭؒΛಡΈॻ͖͢Δ͜ͱ͕Ͱ͖Δ
     ʢಡΈॻ͖Λ͢Δͱ116"%%3͸ࣗಈతʹ ·ͨ͸ ΠϯΫϦϝϯτ͞ΕΔʣ
     116"%%3
     
     116%"5"Ϩδελ
111. ͜͜·Ͱͷ࿩͔͠Β͢Δͱ
     73".ͷ಺༰Λى఺ʹ
     Ճ޻͍͚ͯ͠͹
     ϐΫηϧσʔλΛੜ੒Ͱ͖ͦ͏
112. 
     ωʔϜςʔϒϧ͔ΒͲͷഎܠεϓϥΠτ͕഑ஔ͞Ε͍ͯΔ͔Ϧʔυ͢Δ
     
     Ϧʔυ͞ΕͨεϓϥΠτ൪߸ΛݩʹΧηοτ͔Βը૾σʔλΛಡΜͰ͘Δ
     
     ଐੑςʔϒϧ͔ΒഎܠεϓϥΠτʹద༻͞ΕΔύϨοτ൪߸ΛಡΜͰ͘Δ
      ύϨοτςʔϒϧ͔ΒύϨοτͷ৭ΛಡΜͰ͘Δ
     
     എܠεϓϥΠτͷCJU৘ใΛݩʹύϨοτ͔Βண৭͢Δ ͜ͷखॱͰωʔϜςʔϒϧ͔Β
     YQYͷϐΫηϧσʔλ͕ͭ͘ΕΔ͸ͣ
     116ඳըखॱΠϝʔδ
113. ΋͏ͪΐͬͱ۩ମతͳྫ
114. )FMMP
     8PSMEͷ)ΛωʔϜςʔϒϧ͔ΒϐΫηϧσʔλʹͯ͠ΈΔྫ 
     ωʔϜςʔϒϧͷ
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     ΛϦʔυ͠εϓϥΠτ൪߸
     
     
     
     
     
     
     
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     εϓϥΠτ͸ΩϟϥΫλʔ30.಺ʹ#ZUFͣͭฒΜͰ͍ΔͷͰ
     
     
     
     
     Y
     Y
     
     
     Y͔Β#ZUFϦʔυ͠εϓϥΠτΛ૊ΈཱͯΔ Y$൪஍                                                                 Y 
     ֘౰ͷ࠲ඪ͸ଐੑςʔϒϧͷΞυϨεY%"ʹ֘౰͢ΔͨΊ
     
     
     73".ͷ
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
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     ͜ΜͳεϓϥΠτ
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115.  Ϧʔυ͞ΕͨΞτϦϏϡʔτ͔Β֘౰ϙδγϣϯͷύϨοτ൪߸Λ
     
     
     
     
     
     औΓग़͢ͱ
     
     
     
     
     
     
     ʹͳΔͷͰύϨοτ͕ద༻͞ΕΔ͜ͱ͕Θ͔Δ
      ύϨοτ͢ͳΘͪ73".ͷ
     
     
     
     
     
     
     
     
     
     
     
     #ZUFಡΉͱ
     
     
     
     
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     ͨΊ3(#ʹม׵֤͠ϐΫηϧʹύϨοτΛద༻ͯ͠΍Δͱ׬੒
                                    ύϨοτ̌ ׬੒✨ C Y'd Y'
     Y
     Y
     Y 116ඳըखॱΠϝʔδ )FMMP
     8PSMEͷ)ΛωʔϜςʔϒϧ͔ΒϐΫηϧσʔλʹͯ͠ΈΔྫ
116. impl Tile { pub fn new<P: PaletteRam>( vram: &Ram, cram: &Ram, palette: &P, position: &SpritePosition, config: &SpriteConfig, ) -> Self { let block_id = get_block_id(position); let sprite_id = get_sprite_id(&vram, position, config); let attr = get_attribute(&vram, position, config); let palette_id = (attr >> (block_id * 2)) & 0x03; let sprite = build(&cram, sprite_id, config.offset_addr_by_background_table); Tile { sprite, palette: palette.get(palette_id, PaletteType::Background) } } } pub fn build(cram: &Ram, sprite_id: u8, offset: u16) -> Sprite { let mut sprite: Sprite = (0..8).into_iter().map(|_| vec![0; 8]).collect(); for i in 0..16 { for j in 0..8 { let addr = (sprite_id as u16) * 16 + i + offset; let ram = cram.read(addr); if ram & (0x80 >> j) as u8 != 0 { sprite[(i % 8) as usize][j] += (0x01 << (i / 8)) as u8; } } } sprite } 116ඳըखॱΠϝʔδ ࠲ඪ͔ΒϒϩοΫ൪߸ Λࢉग़ ࠲ඪͱωʔϜςʔϒϧ͔Β εϓϥΠτ൪߸Λࢉग़
117. impl Tile { pub fn new<P: PaletteRam>( vram: &Ram, cram: &Ram, palette: &P, position: &SpritePosition, config: &SpriteConfig, ) -> Self { let block_id = get_block_id(position); let sprite_id = get_sprite_id(&vram, position, config); let attr = get_attribute(&vram, position, config); let palette_id = (attr >> (block_id * 2)) & 0x03; let sprite = build(&cram, sprite_id, config.offset_addr_by_background_table); Tile { sprite, palette: palette.get(palette_id, PaletteType::Background) } } } pub fn build(cram: &Ram, sprite_id: u8, offset: u16) -> Sprite { let mut sprite: Sprite = (0..8).into_iter().map(|_| vec![0; 8]).collect(); for i in 0..16 { for j in 0..8 { let addr = (sprite_id as u16) * 16 + i + offset; let ram = cram.read(addr); if ram & (0x80 >> j) as u8 != 0 { sprite[(i % 8) as usize][j] += (0x01 << (i / 8)) as u8; } } } sprite } 116ඳըखॱΠϝʔδ ࠲ඪͱଐੑςʔϒϧ͔Β
     ΞτϦϏϡʔτΛࢉग़ ΞτϦϏϡʔτͱϒϩοΫ൪߸͔Β
     ύϨοτ൪߸Λࢉग़
118. impl Tile { pub fn new<P: PaletteRam>( vram: &Ram, cram: &Ram, palette: &P, position: &SpritePosition, config: &SpriteConfig, ) -> Self { let block_id = get_block_id(position); let sprite_id = get_sprite_id(&vram, position, config); let attr = get_attribute(&vram, position, config); let palette_id = (attr >> (block_id * 2)) & 0x03; let sprite = build(&cram, sprite_id, config.offset_addr_by_background_table); Tile { sprite, palette: palette.get(palette_id, PaletteType::Background) } } } pub fn build(cram: &Ram, sprite_id: u8, offset: u16) -> Sprite { let mut sprite: Sprite = (0..8).into_iter().map(|_| vec![0; 8]).collect(); for i in 0..16 { for j in 0..8 { let addr = (sprite_id as u16) * 16 + i + offset; let ram = cram.read(addr); if ram & (0x80 >> j) as u8 != 0 { sprite[(i % 8) as usize][j] += (0x01 << (i / 8)) as u8; } } } sprite } 116ඳըखॱΠϝʔδ εϓϥΠτ൪߸͔Β
     YͷϐΫηϧσʔλΛ
     ࡞੒
119. fn render_tile(&mut self, bg: &BackgroundCtx, x: usize, y: usize) { let offset_x = (bg.scroll_x % 8) as i32; let offset_y = (bg.scroll_y % 8) as i32; for i in 0..8 { for j in 0..8 { let x = (x + j) as i32 - offset_x; let y = (y + i) as i32 - offset_y; if x >= 0 as i32 && 0xFF >= x && y >= 0 as i32 && y < 224 { let color_id = bg.tile.palette[bg.tile.sprite[i][j] as usize]; let color = COLORS[color_id as usize]; let index = ((x + (y * 0x100)) * 4) as usize; self.buf[index] = color.0; self.buf[index + 1] = color.1; self.buf[index + 2] = color.2; if x < 8 { self.buf[index + 3] = 0; } } } } } pub static COLORS: &'static [(u8, u8, u8)] = &[ (0x80, 0x80, 0x80), (0x00, 0x3D, 0xA6), (0x00, 0x12, 0xB0), (0x44, 0x00, 0x96), …লུ… ]; 116ඳըखॱΠϝʔδ ً౓ɺ৭౓ͷσʔλΛ
     3(#ʹม׵͢Δςʔϒϧ εϓϥΠτɺύϨοτ
     ͔Β3(#"ͷϐΫηϧσʔλ ʹม׵
120. ϐΫηϧσʔλ͸ಘΒΕ͕ͨ
     Ͳ͏΍ͬͯϒϥ΢βʹදࣔ͢Δ͔
121. $BOWBT
122. const canvas = document.querySelector("canvas"); const ctx = canvas.getContext("2d"); Module.NES = { ctx, canvas, image: ctx.createImageData(256, 240) }; mergeInto(LibraryManager.library, { canvas_render: function (ptr, len) { Module.NES.buf = new Uint8Array(Module.HEAPU8.buffer, ptr, len); Module.NES.image.data.set(Module.NES.buf); Module.NES.ctx.putImageData(Module.NES.image, 0, 0); }, }) +BWB4DSJQUଆͷॲཧ FNTDSJQUFOΛ࢖༻͍ͯ͠Δ৔߹
     NFSHF*OUPΛ࢖༻ͯ͠+4ؔ਺Λ 3VTUଆʹެ։Ͱ͖Δ
123. const canvas = document.querySelector("canvas"); const ctx = canvas.getContext("2d"); Module.NES = { ctx, canvas, image: ctx.createImageData(256, 240) }; mergeInto(LibraryManager.library, { canvas_render: function (ptr, len) { Module.NES.buf = new Uint8Array(Module.HEAPU8.buffer, ptr, len); Module.NES.image.data.set(Module.NES.buf); Module.NES.ctx.putImageData(Module.NES.image, 0, 0); }, }) +BWB4DSJQUଆͷॲཧ 3VTUଆ͔ΒϐΫηϧσʔλͷ
     ϙΠϯλͱ௕͞Λ΋Βͬͯ *NBHF%BUBʹηοτ
124. extern "C" { fn canvas_render(ptr: *const u8, len: usize); } impl Renderer { pub fn render( &mut self, background: &BackgroundField, sprites: &SpritesWithCtx) { // …লུ… unsafe { canvas_render(self.buf.as_ptr(), self.buf.len()); } } 3VTU XBTN ଆͷॲཧ ͜Μͳ;͏ʹݺ΂Δ όοϑΝͷϙΠϯλͱ௕͞Λ
     ڭ͑ͯ͋͛Δ
125. ͜ΕͰ73".ͷ಺༰Λ
     $BOWBTʹॻ͖ग़ͤͦ͏
126. ͋ͱ͸$16ͱͷಉظͳͲ
     λΠϛϯάपΓ
127. ͦͷલʹ116ͷϝϞϦۭؒͷ
     ஫ҙ఺Λ͝঺հ ׂ Ѫ
128. 116%"5"͔Β116ͷϝϞϦۭؒͷσʔλΛ$16͔ΒϦʔυͰ͖Δ͕
     116಺෦ʹ͸ϦʔυόοϑΝ͕ೖ͍ͬͯͯ116͔Βͷσʔλग़ྗ̍αΠΫϧ஗ΕΔ ͨͿΜҟͳΔΫϩοΫͷόε
     Λ·͙ͨͨΊ'*'0ΛೖΕͯಉظΛͱͬͯΔ ͨͩ͠ɺεϓϥΠτ3".ɺύϨοτςʔϒϧ͸আ͘ ʢ΍΍͍͜͠ʜʣ ͜Ε͸ʢଟ෼ʣεϓϥΠτ3".ɺύϨοτςʔϒϧ͸116ͷ಺෦ʹߏ੒͞Ε͍ͯͯ
     όεΛ·͍ͨͰ͍ͳ͍ʢ$16όε௚݁ʣ͡Όͳ͍͔ͱਪଌ ΤϛϡϨʔλ࡞ऀ͸͜ΕΛݟམͱ͢ͱপʹ͸·Δ 116ͷϝϞϦۭؒ஫ҙ఺ ׂ Ѫ
129. 116ͷඳըλΠϛϯά
130. MJOF
     
     QJYFM جຊతʹ͸116DZDMFͰQJYFMͣͭඳը ࠨ͔Βը໘ͷӈ୺ʹ
     QJYFMͣͭඳը͍ͯ͘͠ EJTQMBZ 116ͷඳըλΠϛϯά
131. MJOF
     
     QJYFM ࣍ͷϥΠϯ΁ͷඳը४උΛؚΊΔͱMJOF͋ͨΓαΠΫϧඞཁ ࣍ͷϥΠϯ΁ͷ४උ
     ը໘ӈ୺·Ͱ౸ୡͨ͠Β
     ࣍ͷϥΠϯͷࠨ୺ʹ໭Δ
     ʢIWMBOL EJTQMBZ 116ͷඳըλΠϛϯά
132. MJOF
     
     QJYFM ը໘ͷӈԼ୺ʹ౸ୡ MJOF෼ ͨ͠Βը໘෼ͷඳը͕׬ྃ EJTQMBZ MJOF 116ඳըλΠϛϯά
133. MJOF
     
     QJYFM EJTQMBZ ࣍ͷඳըͷͨΊʹઌ಄΁໭Δ
     ͜ͷͨΊͷظؒΛ
     
     
     
     
     
     
     
     
     
     ͱݴ͍
     MJOF෼ͷ࣌ؒΛཁ͢Δ Ұը໘ͷߋ৽ʹ͸
     Y
     
      αΠΫϧ
     ඞཁͱͳΔ ͢ͳΘͪ 7CMBOL ը໘ͷӈԼ୺ʹ౸ୡ MJOF෼ ͨ͠Βը໘෼ͷඳը͕׬ྃ 116ඳըλΠϛϯά
134. MJOF
     
     QJYFM ͜ͷαΠΫϧΛඵؒʹճ '14 ܁Γฦ͢͜ͱͰ
     Ωϟϥ΍എܠ͕ͳΊΒ͔ʹಈ͖ήʔϜͱͯ͠੒ཱ͢Δ EJTQMBZ MJOF 116ඳըλΠϛϯά
135. 116ͷσʔλߋ৽ͷ੍໿ ΤϛϡϨʔλ࡞ऀʹ͸
     ͋·Γؔ܎ͳ͍͔΋
136. EJTQMBZ
     ඳըதʹ73".Λॻ͖׵͑Δͱը໘͕ΈͩΕͯ͠·͏ ඳըத 116ͷσʔλߋ৽ͷ੍໿
137. 
     ඳըΛߦ͍ͬͯͳ͍7CMBOLதʹ73".Λॻ͖׵͑Δ
     $16͸116εςʔλεϨδελ·ͨ͸/.*ʹͯ
     7MBOLͰ͋Δ͜ͱΛ஌Δ͜ͱ͕Ͱ͖Δ EJTQMBZ 7CMBOLத 116ͷσʔλߋ৽ͷ੍໿
138. pub fn run(&mut self, cycle: usize, nmi: &mut bool, mmc: &Mmc) -> bool { let cycle = self.cycle + cycle; if cycle < 341 { self.cycle = cycle; return false; } if self.line == 0 { self.background.clear(); } self.cycle = cycle - 341; self.line = self.line + 1; if self.line <= 240 && self.line % 8 == 0 { self.background.build_line( &self.ctx.vram, &self.ctx.cram, &self.ctx.palette, (tile_x, tile_y), ); } // …লུ… } 116ͷ࣮૷ 116αΠΫϧ਺ΛՃࢉ͍͖ͯ͠
     MJOF׬͔ྃͨ͠Λ൑ఆ
139. pub fn run(&mut self, cycle: usize, nmi: &mut bool, mmc: &Mmc) -> bool { let cycle = self.cycle + cycle; if cycle < 341 { self.cycle = cycle; return false; } if self.line == 0 { self.background.clear(); } self.cycle = cycle - 341; self.line = self.line + 1; if self.line <= 240 && self.line % 8 == 0 { self.background.build_line( &self.ctx.vram, &self.ctx.cram, &self.ctx.palette, (tile_x, tile_y), ); } // …লུ… } 116ͷ࣮૷ ඳը۠ؒͰ͋Ε͹
     ϥΠϯຖʹഎܠΛ
     ૊Έཱ͍ͯͯ͘ MJOFd
140. pub fn run(&mut self, cycle: usize, nmi: &mut bool, mmc: &Mmc) -> bool { //…লུ… if self.line == 241 { self.registers.set_vblank(); if self.registers.is_irq_enable() { *nmi = true; } } if self.line >= 262 { self.registers.clear_vblank(); self.line = 0; self.sprites = build_sprites( &self.ctx.cram, &self.ctx.sprite_ram, &self.ctx.palette, ); return true; } false } 116ͷ࣮૷ ׂΓࠐΈ༗ޮͰ͋Ε͹WCMBOL
     ࣌ʹ/.*ΛΞΫςΟϒʹઃఆ 7#MBOLϑϥάΛηοτ MJOF
141. pub fn run(&mut self, cycle: usize, nmi: &mut bool, mmc: &Mmc) -> bool { //…লུ… if self.line == 241 { self.registers.set_vblank(); if self.registers.is_irq_enable() { *nmi = true; } } if self.line >= 262 { self.registers.clear_vblank(); self.line = 0; self.sprites = build_sprites( &self.ctx.cram, &self.ctx.sprite_ram, &self.ctx.palette, ); return true; } false } 116ͷ࣮૷ ϥΠϯͰҰը໘෼ͷ
     ඳը͕׬੒ MJOF
142. ͋ͱ͸$16ͱ116ɺඳըͷಉظΛ
     ͲͷΑ͏ʹͱΔ͔
143. ٯࢉͯ͘͠ͱྑͦ͞͏
144. ϑΝϛίϯ͸'14ɺ͢ͳΘͪNTຖʹ116͕ߋ৽ͨ͠
     ը໘σʔλΛ࡞੒Ͱ͖Ε͹ྑ͍ લड़ͨ͠Α͏ʹը໘ͷߋ৽͸ 116αΠΫϧ ͳͷͰ NTຖʹ116͕ը໘ੜ੒͢Δ·Ͱ
     ໿ 
     Y
     αΠΫϧ $16Λ࣮ߦͯ͠΍Ε͹Α͍ 116ͷαΠΫϧ͸$16ͷഒ଎ʢഒͷΫϩοΫ͕ೖྗʣ $16ͱ116ͷಉظ
145. ࣌ؒ NT NT ը໘෼ͷσʔλ͕
     Ͱ͖Δ·Ͱ
     $16116Λ࣮ߦ ը໘෼ͷσʔλ͕
     Ͱ͖Δ·Ͱ
     $16116Λ࣮ߦ ը໘෼ͷσʔλ͕
     Ͱ͖Δ·Ͱ
     $16116Λ࣮ߦ ඳը ඳը ඳը ͜ΜͳΠϝʔδͰ࣮ߦ͍ͨ͠ NT $16ͱ116ͷಉظ
146. SFRVFTU"OJNBUJPO'SBNFΛ࢖͍͍ͨ '14Ͱಈ࡞͢ΔΑ͏ʹ͍͍ײ͡ʹ͕Μ͹ͬͯ͘ΕΔ΍ͭ
147. void emscripten_set_main_loop( em_callback_func func, int fps, int simulate_infinite_loop) FNTDSJQUFOΛ࢖༻͍ͯ͠Δ৔߹͍͕ͭ͜࢖͑Δ ୈೋҾ਺ʹΛηοτ͢Δͱ
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     Λ
     ࢖ͬͯ͘ΕΔ SFRVFTU"OJNBUJPO'SBNF FNTDSJQUFO@TFU@NBJO@MPPQ ୈࡾҾ਺Ληοτ͢ΔͱແݶϧʔϓΛ
     γϛϡϨʔτ
148. MFU
     NBJO@MPPQ
     
     cc
     \
     nes::run(&mut ctx); }; externs::set_main_loop_callback(main_loop); pub fn run(ctx: &mut Context) { loop { // …লུ… let cycle: u16 = cpu::run(&mut ctx.cpu_registers, &mut cpu_bus, &mut ctx.nmi) as u16 let is_ready = ctx.ppu.run((cycle * 3) as usize, &mut ctx.nmi, &ctx.mmc); if is_ready { if ctx.ppu.background.0.len() != 0 { ctx.renderer.render(&ctx.ppu.background.0, &ctx.ppu.sprites); } break; } } } ϝΠϯϧʔϓͷ࣮૷ NTपظͰOFTSVOΛ࣮ߦ
149. MFU
     NBJO@MPPQ
     
     cc
     \
     nes::run(&mut ctx); }; externs::set_main_loop_callback(main_loop); pub fn run(ctx: &mut Context) { loop { // …লུ… let cycle: u16 = cpu::run(&mut ctx.cpu_registers, &mut cpu_bus, &mut ctx.nmi) as u16 let is_ready = ctx.ppu.run((cycle * 3) as usize, &mut ctx.nmi, &ctx.mmc); if is_ready { if ctx.ppu.background.0.len() != 0 { ctx.renderer.render(&ctx.ppu.background.0, &ctx.ppu.sprites); } break; } } } ϝΠϯϧʔϓͷ࣮૷
     ߋ৽ͨ͠ը໘ͷϐΫηϧσʔλͷ४උ͕
     
     
     Ͱ͖Δ·Ͱ$16ͱ116Λ࣮ߦ͢Δ $16ͷ࣮ߦαΠΫϧͷഒͷαΠΫϧΛ ౉͢ʢ116αΠΫϧ΁ͷม׵ʣOΛ࣮ߦ
150. MFU
     NBJO@MPPQ
     
     cc
     \
     nes::run(&mut ctx); }; externs::set_main_loop_callback(main_loop); pub fn run(ctx: &mut Context) { loop { // …লུ… let cycle: u16 = cpu::run(&mut ctx.cpu_registers, &mut cpu_bus, &mut ctx.nmi) as u16 let is_ready = ctx.ppu.run((cycle * 3) as usize, &mut ctx.nmi, &ctx.mmc); if is_ready { if ctx.ppu.background.0.len() != 0 { ctx.renderer.render(&ctx.ppu.background.0, &ctx.ppu.sprites); } break; } } } ϝΠϯϧʔϓͷ࣮૷ Ұը໘෼४උ͕Ͱ͖ͨΒϨϯμϦϯά
151. ͜͜·Ͱ͕࣮૷Ͱ͖Ε͹
     )FMMP
     8PSME͕ඳըͰ͖ͦ͏
152. )&--0
     803-%ͷαϯϓϧίʔυ
     ΛݟͯΈΔ
153. IUUQIQWFDUPSDPKQBVUIPST7"OFTTBNQMFIUNM
     ΑΓ )&--0
     803-%
154. )FMMP
     8PSME char NesMain() { const char palettes[] = { 0x0f, 0x00, 0x10, 0x20, 0x0f, 0x06, 0x16, 0x26, 0x0f, 0x08, 0x18, 0x28, 0x0f, 0x0a, 0x1a, 0x2a }; const char string[] = "HELLO, WORLD!"; char i; *(char*)0x2000 = 0x00; *(char*)0x2001 = 0x00; *(char*)0x2006 = 0x3f; *(char*)0x2006 = 0x00; for (i = 0; i < 0x10; i ++) *(char*)0x2007 = palettes[i]; *(char*)0x2006 = 0x21; *(char*)0x2006 = 0xc9; for (i = 0; i < 13; i ++) *(char*)0x2007 = string[i]; *(char*)0x2000 = 0x08; *(char*)0x2001 = 0x1e; while (1); return 0; }
155. char NesMain() { const char palettes[] = { 0x0f, 0x00, 0x10, 0x20, 0x0f, 0x06, 0x16, 0x26, 0x0f, 0x08, 0x18, 0x28, 0x0f, 0x0a, 0x1a, 0x2a }; const char string[] = "HELLO, WORLD!"; എܠύϨοτσʔλ
     ৭෼Λࢦఆ ॻ͖ࠐΉจࣈྻ )FMMP
     8PSME
156. *(char*)0x2000 = 0x00; *(char*)0x2001 = 0x00; *(char*)0x2006 = 0x3f; *(char*)0x2006 = 0x00; for (i = 0; i < 0x10; i ++) *(char*)0x2007 = palettes[i]; ඳը΍ׂΓࠐΈΛېࢭ Y'
     YΛYʹॻ͖ࠐΉ
     ͜ͱͰ116ΞυϨεY'Λࢦఆ ͭ·ΓഎܠύϨοτςʔϒϧྖҬ YʹσʔλΛॻ͖͜ΜͰ͍͘͜ͱͰ
     ઌʹࢦఆͨ͠Y'͔ΒॱʹQBMFUUTͷσʔλΛసૹ͍ͯ͘͠
     116ΞυϨε͸σʔλ͕ॻ͖ࠐ·ΕΔͨͼʹ116ଆͰࣗಈΠϯΫϦϝϯτ͞ΕΔ
     ͜ΕͰύϨοτσʔλͷసૹ͸0,
     )FMMP
     8PSME
157. *(char*)0x2006 = 0x21; *(char*)0x2006 = 0xc9; for (i = 0; i < 13; i ++) *(char*)0x2007 = string[i]; *(char*)0x2000 = 0x08; *(char*)0x2001 = 0x1e; while (1); return 0; } Y
     Y$ΛYʹॻ͖ࠐΉ
     ͜ͱͰ116ΞυϨεY$Λࢦఆ Yʹॻ͖ࠐΉ͜ͱͰ
     Y$ʙʹA)&--0
     803-%A
     Λసૹ ඳը։࢝ ͜ͷαϯϓϧ͸Ұ౓ը໘Λඳըͨ͠Β
     ߋ৽͞Εͳ͍ͷͰແݶϧʔϓ )FMMP
     8PSME
158. )FMMP
     8PSME
159. ͜͜·ͰͰΑ͏΍͘
     )&--0
     803-%
160. ଞͷ30.Λಈ͔͢ʹ͸·ͩ·ͩ
     ػೳΛ࣮૷͠ͳͯ͘͸ͳΒͳ͍
161. εΫϩʔϧ
162. 0x2000ʙ0x23BF 0x03C0 ωʔϜςʔϒϧ0 0x23C0ʙ0x23FF 0x0040 ଐੑςʔϒϧ0 0x2400ʙ0x27BF 0x03C0 ωʔϜςʔϒϧ1 0x27C0ʙ0x27FF 0x0040 ଐੑςʔϒϧ1 0x2800ʙ0x2BBF 0x03C0 ωʔϜςʔϒϧ2 0x2BC0ʙ0x2BFF 0x0040 ଐੑςʔϒϧ2 0x2C00ʙ0x2FBF 0x03C0 ωʔϜςʔϒϧ3 0x2FC0ʙ0x2FFF 0x0040 ଐੑςʔϒϧ3 116ͷϝϞϦϚοϓΛݟ௚͢ͱҎԼͷΑ͏ʹωʔϜςʔϒϧͱ
     ଐੑςʔϒϧͷηοτΛͭʢ͢ͳΘͪը໘෼ʣ࣋ͯΔΑ͏ʹͳ͍ͬͯΔ 116ͷϝϞϦϚοϓ ࠶
163. ը໘෼ͷςʔϒϧ͸ҎԼͷΑ͏ͳ഑ஔʹͳ͍ͬͯΔ ωʔϜଐੑςʔϒϧ
     YdY''
     ωʔϜଐੑςʔϒϧ
     YdY''
     ωʔϜଐੑςʔϒϧ
     YdY#''
     ωʔϜଐੑςʔϒϧ
     Y$dY'''
     116ͷωʔϜଐੑςʔϒϧͷ഑ஔ
164. ԣεΫϩʔϧήʔϜͷྫ
165. ҎԼͷΑ͏ʹTDSPMM@YΛࢦఆ͢Δ͜ͱͰσΟεϓϨΠʹ੾Γग़͢ྖҬΛมߋͰ͖Δ ωʔϜ
     ଐੑςʔϒϧ
     YdY''
     ωʔϜ
     ଐੑςʔϒϧ
     YdY''
     σΟεϓϨΠʹ͸ҎԼͷ෦෼͕੾Γग़͞Εͯ
     දࣔ͞ΕΔ TDSPMM@Y εΫϩʔϧͱදࣔྖҬͷؔ܎
166. εΫϩʔϧؔ͢ΔϨδελ͸ͭ ׂ Ѫ
167. ΞυϨε ֓ཁ Y എܠεΫϩʔϧΦϑηοτ
     ճϥΠτΛߦ͏͜ͱͰ9ɺ:ͷॱʹεΫϩʔϧ஋͕ઃఆ͞ΕΔ 1164$30--Ϩδελ αΠζ͕CJUͳͷͰd·ͰͷεΫϩʔϧ͕ઃఆͰ͖Δ
     ͜ͷͻͱͭͷϨδελͰYํ޲ɺZํ޲྆ํઃఆͰ͖ΔΑ͏ʹͳ͍ͬͯΔ ࠷ॳͷॻ͖ࠐΈ͕Yํ޲ɺೋճ໨ͷॻ͖ࠐΈ͕Zํ޲ͱͳΔ QYͣͭεΫϩʔϧ͍ͨ͠৔߹͸͜ͷϨδελΛ੍ޚ͢Δ
     ͔͠͠ɺ͜ͷϨδελ͚ͩͰ͸QYҎ্ͷεΫϩʔϧ͸ෆՄ ׂ Ѫ
168. 116$53-Ϩδελ ΞυϨε ֓ཁ Y CJU આ໌ ʜ ʜলུʜ  ωʔϜςʔϒϧࢦఆ 116$53-Ϩδελ Y ͷCJU͸ωʔϜςʔϒϧΛࢦఆ͢Δ͜ͱ͕Ͱ͖Δ ωʔϜ
     ଐੑςʔϒϧ
     ωʔϜ
     ଐੑςʔϒϧ
     ωʔϜ
     ଐੑςʔϒϧ
     ωʔϜ
     ଐੑςʔϒϧ
     ྫ͑͹ωʔϜςʔϒϧࢦఆ͕CͰ͋Ε͹͜ͷςʔϒϧ͕ࢦఆ͞Εͨ͜ͱʹͳΓ
     Yํ޲ʹQY෼εΫϩʔϧ͕Φϑηοτͨ͜͠ͱͱಉ౳ͱͳΔ ઌͷ1164$30--ͱ߹ΘͤΕ͹
     QYҎ্ͷεΫϩʔϧ͕Մೳ ׂ Ѫ
169. ͜ΕΒΛ࢖͏ͱ໘ന͍දݱ͕Մೳʹ
170. ϥελεΫϩʔϧ
171. ඳըͷ్தͰεΫϩʔϧ஋Λௐ੔͢Δ͜ͱͰը໘ͷ్த͔ΒεΫϩʔϧ͕Մೳ
     εΫϩʔϧ଎౓Λม͑Δ͜ͱͰͦΕͧΕҧͬͨ଎౓ͰεΫϩʔϧͤ͞Δ͜ͱ΋Մೳ ϥελεΫϩʔϧ
172. εϓϥΠτ
173. ͜͜·Ͱઆ໌ͨ͠ͷ͸എܠͰ͕͢ɺΩϟϥΫλʔΛಈ͔͢ʹ͸
     εϓϥΠτͱͯ͠ඳը͢Δඞཁ͕͋Δ എܠ εϓϥΠτ എܠ͸YͷλΠϧΛ
     Y
     ݸ
     ը໘ʹෑ͖٧ΊͯεΫϩʔϧ౳Ͱ
     ಈ͔͢͜ͱ͕Ͱ͖Δ εϓϥΠτͰ͋Ε͹YZࣗ༝ʹઃఆՄೳ 8P
     YJBOH
     OJÁP
     OJÁP
     
     .PKPO
     5XJOT εϓϥΠτ
174. εϓϥΠτͷσʔλ͸Ͳ͜ʹॻ͔͘
175. 116͸εϓϥΠτ༻ͷྖҬεϓϥΠτ3".Λ
     
     
     
     
     
     
     
     
     
     
     
     
     
     ͍࣋ͬͯΔ
     116ͷϝϞϦϚοϓʹ͸දݱ͞Ε͍ͯͳ͍͓ͦ͠Β͘116಺෦ͷྖҬʁ ΞυϨε ֓ཁ Y εϓϥΠτϝϞϦΞυϨε
     YΛܦ༝ͯ͠εϓϥΠτϝϞϦ΁ϦʔυϥΠτ͢ΔϏοτΞυϨεΛࢦఆ Y εϓϥΠτϝϞϦσʔλ
     YʹΑͬͯࢦఆ͞ΕͨεϓϥΠτϝϞϦΞυϨεʹ͍ͨͯ͠Ϧʔυ
     
     ϥΠτΛߦ͏
     ΞΫηε͢Δͨͼʹ౓ʹεϓϥΠτϝϞϦΞυϨε͸ΠϯΫϦϝϯτ  ͞ΕΔɻ ΞΫηεํ๏͸116"%%3
     
     116%"5" Y
     
     Y ͱ΄΅ಉ͡
     ҟͳΔ఺͸εϓϥΠτ3".ͷۭؒ͸CJUͰදݱͰ͖ΔͷͰ
     ΞυϨεΛઃఆ͢ΔͨΊʹ̎ճॻ͖ࠐΉඞཁ͸ͳ͍ #ZUF εϓϥΠτ3".
176. εϓϥΠτͭʹରͯ͠ҎԼͷ#ZUFͷઃఆΛ͍࣋ͬͯΔ #ZUF ֓ཁ  :࠲ඪ
     
       εϓϥΠτΠϯσοΫε
     ΩϟϥΫλʔ30.಺ͷεϓϥΠτͷԿ൪໨ͷεϓϥΠτΛద༻͢Δ͔Λࢦఆ͢Δ   9࠲ඪ CJU આ໌  ਨ௚ํ޲൓స
     
     
     ൓స͠ͳ͍
     
     
     
     ൓స͢Δ  ਫฏํ޲൓స
     
     
     ൓స͠ͳ͍
     
     
     
     ൓స͢Δ  දࣔ༏ઌॱҐ
     
     
     εϓϥΠτΛ༏ઌ
     
     
     
     എܠΛ༏ઌ 
     
      ༧໿  ύϨοτ൪߸
     
     C
     
     ύϨοτ
     
     C
     
     ύϨοτ
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     C
     
     ύϨοτ
     
     C
     
     ύϨοτ
     εϓϥΠτ3".͸#ZUFͳͷͰ
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     ηοτͰ͖Δ ࠷େεϓϥΠτ εϓϥΠτ3".
177. εϓϥΠτʹؔ͢ΔϢχʔΫͳ࢓༷
178. εϓϥΠτώοτ
     ʢ௨শʰര஄ʱʣ
179. ΞυϨε ֓ཁ Y CJU આ໌  7CMBOL࣌ʹ  εϓϥΠτώοτ࣌ʹ  εΩϟϯϥΠϯεϓϥΠτ਺ɹ
     
     ݸҎԼ
     
     
     
     ݸҎ্  3FTFSWFE εϓϥΠτ̌ώοτ
     εϓϥΠτ3".ͷઌ಄ʹઃఆ͞ΕͨεϓϥΠτ͕
     ϥΠϯόοϑΝʹల։͞ΕΔͱ116Ϩδελ Y
     ͷʮεϓϥΠτ̌ώοτʯϑϥάཱ͕ͭVOΛ࣮ߦ
180. ༻్͸ʁ
181. ࣮͸͜͜ʹಁ໌ͳ̌ര஄͕഑ஔ͞Ε͍ͯΔ 8P
     YJBOH
     OJÁP
     OJÁP
     
     .PKPO
     5XJOT εϓϥΠτ̌ώοτ
182. ʮεϓϥΠτ̌ώοτʯϑϥάΛݕग़͔ͯ͠Β
     εΫϩʔϧॲཧΛ։࢝͢Δ͜ͱʹΑΓ
     ݻఆϔομΛ࣮ݱ͍ͯ͠Δ ج४ͱͳΔεϓϥΠτʢ̌ര஄ʣ
     ͸͜͜ʹઃஔͯ͋͠Δ 8P
     YJBOH
     OJÁP
     OJÁP
     
     .PKPO
     5XJOT εϓϥΠτ̌ώοτ
183. εϓϥΠτͷ੍໿
184. ࣮͸εϓϥΠτ͸ಉҰϥΠϯ্ʹͭ·Ͱ͔͠഑ஔͰ͖ͳ͍ 116͸ϥΠϯόοϑΝΛ͓࣋ͬͯΓ
     ϥΠϯຖʹεϓϥΠτͱഎܠͷ߹੒Λߦ͍ඳը͍ͯ͠Δ ͜ͷॲཧ͸ίετ͕ߴ͘࠷େͭ·Ͱ͔͠߹੒Ͱ͖ͳ͍Β͍͠ ౰࣌ͷϝϞϦͱίετͷؔ܎͔Β
     ϑϨʔϜόοϑΝʹ͸Ͱ͖ͳ͔ͬͨΜͩͱਪଌ ΞυϨε ֓ཁ Y CJU આ໌ ʜ ʜ  εΩϟϯϥΠϯεϓϥΠτ਺ɹ
     
     ݸҎԼ
     
     
     
     ݸҎ্ ʜ ʜ
     ͜Ε͸্ه੍໿Λݕग़͢ΔͨΊͷػߏ
     ͕ͩɺόάͬͯΔͱͷӟ΋͋Γ
     Ͳͷఔ౓࢖༻͞Ε͍ͯͨͷ͔͸ෆ໌ εϓϥΠτͷ੍໿
185. ൃੜ͢Δ໰୊ͱରࡦʢະݕূʣ
186. ࠶ݱ؀ڥ͕ͳ͍ͷͰະݕূͰ͕͢ʜ υϥΰϯΫΤετͰ͸֗ͷதͰ̐ਓͷύʔςΟͱଜਓ͕
     ԣҰ௚ઢʹฒͿͱϥΠϯ্ͷεϓϥΠτ਺͕ͱͳΓ
     ύʔςΟϝϯόʔ΋͘͠͸ଜਓ͕ফ͑Δ ͦͷͨΊɺιϑτ΢ΣΞͰਓΛߴ଎ʹදࣔඇදࣔΛ܁Γฦ͢͜ͱͰ
     Ωϟϥ͕఺໓ͯ͠͠·͏΋ͷͷಉ࣌ʹදࣔ͢Δ͜ͱΛՄೳʹͨ͠
     ͱ͍͏࿩͕͋͠ΔΒ͍͠ʢཁݕূʣ ΩϟϥεϓϥΠτͳͷͰ
     ਓͳΒͿͱεϓϥΠτʹ
     ͳͬͯ͠·͏
     ଜਓ
     ਓύʔςΟ ൃੜ͢Δ໰୊ͱରࡦʢະݕূʣ
187. Ͱ΋ɺ͓Ε͸Ͱ͔͍ͬϘεΈͨ͜ͱ͕͋Δͧʂ
     ͱ͍͏ํ΋͍Δ͔΋
188. IUUQTXXXZPVUVCFDPNXBUDI W1(1EP1T3
     ΑΓ εϓϥΠτͰ͸ͳ͘
     എܠͰඳը ͜Ε͸εϓϥΠτͰ͸ͳ͘എܠͰϘεΛදݱͯ͠ΔͬΆ͍ εϓϥΠτͰ͋Ε͹ෳࡶͳഎܠͷ্ʹ
     ߹੒ʢॏͳΓ͕දݱʣ͞Εͯදࣔ͞ΕΔ͕
     എܠͰఢΛදݱͯ͠͠·͏ͱॏͶΔ͜ͱ͕Ͱ͖ͳ͍
     ͳͷͰɺഎܠ͸ਅͬࠇʹͯ͠ΔͱࢥΘΕΔ
     ௨ৗഎܠͱͯ͠ඳը͢ΔͰ͋Ζ͏
     ଍৔ΛεϓϥΠτͱͯ͠ඳը
     ͔ͭӈ͔Βࠨ΁Ҡಈͤ͞Δ͜ͱ
     ʹΑΓυϥΰϯ͕௥ͬͯ͘ΔΑ͏ʹ
     දݱ υϥΰϯͷ্ԼҠಈ͸
     എܠεΫϩʔϧͰ࣮ݱ ͜͏͍͏΍ͭ
189. εϓϥΠτͷసૹύϑΥʔϚϯε
190. ͨͱ͑͹εϓϥΠτ3".#ZUFΛద౰ͳ஋ͰຒΊΔ
     ؆୯ͳॲཧΛߟ͑ͯΈΔ ldy $FF # 2cycle copysprites: sty $2004 # 4cycle dey # 2cycle bne copysprites # 2cycle 
     Y
     
     
     
     
     DZDMF dΛεϓϥΠτ3".
     ʹॻ͖ࠐΉ εϓϥΠτͷసૹύϑΥʔϚϯε
191. εϓϥΠτ΋എܠಉ༷7CMBOLͷظؒʹసૹ͢Δඞཁ͕͋Δ
     7CMBOLͷظؒ͸$16ͷαΠΫϧ਺ʹ׵ࢉ͢Δͱ 
     Y
     
     
     
     
     $ZDMF 116
     DMPDLMJOF 7CMBOLظؒʹ૬౰͢ΔMJOF਺ 116ΫϩοΫ͸
     $16ΫϩοΫͷഒͳͷͰ ઌͷࢼࢉͰ$ZDMFͳͷͰʜ
     ͘͢͝୯७ͳॲཧͰ΋΄ͱΜͲͷ7CMBOLظؒΛઐ༗ͯ͠͠·͏ʜ εϓϥΠτͷసૹύϑΥʔϚϯε
192. ղܾࡦ͸ʜ
193. %."
     %JSFDU
     NFNPSZ
     BDDFTT
194. ௨ৗ$16͕ϩʔυ໋ྩ΍ετΞ໋ྩΛ࢖༻ͯ͠ϝϞϦؒͷ
     σʔλసૹ౳Λߦ͏ͱ͜ΖΛɺ$16Λհͣ͞σʔλసૹ ͯ͘͠ΕΔपลػೳʢϖϦϑΣϥϧʣ ૊ΈࠐΈͳͲ௿εϖοΫͳ$16Ͱ΋࢖͍ํ͕͸·Ε͹
     ύϑΥʔϚϯεΛҾ্͖͛ΒΕΔʢ͔΋͠Εͳ͍ʣ௒ॏ ཁͳػߏ
     %."ͱ͸
195. ͜Ε·Ͱʹࣗ෼͕ݟͨͷ͸
     εΩϟφ
     
     ϝϞϦͷసૹ΍ϝϞϦ
     
     ϓϦϯλ
     &UFISOFUίϯτϩʔϥϝϞϦͷసૹͳͲ ͨͱ͑͹%."͕ͳ͍ͱҎԼͷΑ͏ͳखॱʹͳͬͨΓ͢Δ $16 εΩϟφ όε 3". ᶃεΩϟφ͔ΒϦʔυ ᶄ3".΁ϥΠτ %."ͱ͸
196. εΩϟφ
     
     ϝϞϦͷసૹྫ %."͕͋Ε͹ҎԼͷΑ͏ʹҰؾʹసૹͰ͖ͨΓ͢Δ
     ʢ৔߹͕͋Δʣ $16 εΩϟφ όε 3". ᶃεΩϟφ͔Β3".
     ΁సૹ %."ͱ͸
197. /&4ͷ৔߹Y൪஍ʹ஋Λॻ͖ࠐΉ͜ͱͰ%."͕ىಈ͠
     ॻ͖ࠐΜͩ஋Λ্ҐΞυϨεɺYΛԼҐΞυϨεͱͨ͠ΞυϨ εΛى఺ʹ#ZUFΛεϓϥΠτ3".ʹసૹ͢Δ
     ΋͏ͪΐ͍۩ମతʹ͍͏ͱ ྫ͑͹YʹYΛॻ͖ࠐΜͩ৔߹
     Y͔ΒY''·Ͱͷ#ZUF͕
     εϓϥΠτ3".ʹసૹ͞ΕΔ
     సૹ͸$16αΠΫϧͰ׬ྃ͢ΔͷͰ
     $16Ͱ#ZUFసૹ͢ΔΑΓߴ଎ʹసૹͰ͖Δ
     ʢόε͕ઐ༗͞ΕΔͷͰ$16͸ͦͷؒఀࢭ͢Δʣ %." /&4ͷ%."͸͔ͳΓ௿ػೳ
198. ίϯτϩʔϥ
199. /&4ͷ৔߹Y൪஍ʹίϯτϩʔϥ͕഑ஔ͞Ε͍ͯΔ
     Y൪஍ʹY
     YΛॱʹॻ͖ࠐΉͱͦͷॠؒͷίϯτϩʔϥ
     ͷ֤εΠονͷঢ়ଶ͕ϥον͞ΕY൪஍ΛϦʔυ͢Δ͜ͱͰ
     ॱ࣍εΠονঢ়ଶΛಡΉ͜ͱ͕Ͱ͖Δ ॳճϦʔυ࣌͸"Ϙλϯͷঢ়ଶɺ࣍ͷϦʔυͰ#Ϙλϯͷঢ়ଶʜ
     ͱ͍ͬͨΑ͏ʹॱ࣍औಘ͢ΔͨΊશϘλϯͷঢ়ଶΛ஌Δʹ͸
     ߹ܭճͷϦʔυ͕ඞཁ Ϧʔυ ରԠϘλϯ  "  #  4&-&$5  45"35  ্  Լ  ࠨ  ӈ ίϯτϩʔϥ ̎1͸Y
200. ϒϥ΢βͰͷΤϛϡϨʔγϣϯ
201. const convertKeyCode = keyCode => { switch (keyCode) { case 88: return 0x01; // X A case 90: return 0x02; // Z B case 65: return 0x04; // A SELECT case 83: return 0x08; // S START case 38: return 0x10; // ↑ ↑ case 40: return 0x20; // ↓ ↓ case 37: return 0x40; // ← ← case 39: return 0x80; // → → } }; document.addEventListener("keydown", e => { buf[size - 1] |= convertKeyCode(e.keyCode); }); document.addEventListener("keyup", e => { buf[size - 1] &= ~convertKeyCode(e.keyCode); }); +BWB4DSJQUଆͷॲཧ LFZEPXOVQΠϕϯτΛ MJTUFO OFTϑΝΠϧͷத਎Λ౉ͨ͢Ίͷ
     όοϑΝͷ຤ඌʹΩʔೖྗΛ
     ௨஌͢ΔͨΊͷྖҬ#ZUF෼֬ อͦ͜͠ʹঢ়ଶΛॻ͖ࠐΉ
202. let main_loop = || { let key_state = buf[len - 1]; keypad.update(key_state); // …লུ… }; impl Keypad { pub fn new() -> Self { // …লུ… } pub fn update(&mut self, data: Data) { self.buffer = data; } pub fn write(&mut self, data: Data) { // …লུ… } pub fn read(&mut self) -> u8 { let v = (0x01 << self.addr) as u8; let ret = ((self.register & v) >> self.addr) as u8; self.addr += 1; ret } } 3VTU XBTN ଆͷॲཧ ϝΠϯϧʔϓͰ+4͔Βड͚औͬͨ
     Ωʔͷঢ়ଶΛ൓ө Y͕Πʔυ͞ΕΔͨͼ
     " # 4&-&$5ʜͷॱʹ
     ஋Λฦ͢Α͏ʹ͓ͯ͘͠
203. "16 α΢ϯυ ׂ Ѫ
204. ϑΝϛίϯͷ৔߹"16 ΦʔσΟΦϓϩηογϯάϢχο τʣͱ%"$ σΟδλϧΞφϩάίϯόʔλ ͕$16ʹ ૊Έࠐ·Ε͍ͯΔ "16 α΢ϯυ νϟωϧ͸ۣܗ೾͕νϟωϧɺࡾ֯೾νϟωϧɺϊ Πζνϟωɺ%1$.νϟωϧͷνϟωϧ͕࢖༻Ͱ ͖ήʔϜͷԻ͸͜ͷνϟωϧͷ૊Έ߹ΘͤʹΑΓදݱ͞ ΕΔ ׂ Ѫ
205. IUUQTDPEFQFOJPHSFHIQFOYR8XR[ Πϝʔδ͸͜ͷDPEFQFO͕Θ͔Γ΍͍͢ "16 α΢ϯυ ׂ Ѫ
206. ϨδελΛோΊΔ ׂ Ѫ
207. ΞυϨε 38 ༻్ Y 8 ۣܗ೾$)੍ޚϨδελ Y 8 ۣܗ೾$)੍ޚϨδελ Y 8 ۣܗ೾$)प೾਺Ϩδελ Y 8 ۣܗ೾$)प೾਺Ϩδελ Y 8 ۣܗ೾$)੍ޚϨδελ Y 8 ۣܗ೾$)੍ޚϨδελ Y 8 ۣܗ೾$)प೾਺Ϩδελ Y 8 ۣܗ೾$)प೾਺Ϩδελ Y 8 ࡾ֯೾੍ޚϨδελ Y" 8 ࡾ֯೾प೾਺Ϩδελ Y# 8 ࡾ֯೾प೾਺Ϩδελ "16ͷϨδελҰཡ ׂ Ѫ
208. ΞυϨε 38 ༻్ Y$ 8 ϊΠζ੍ޚϨδελ Y& 8 ϊΠζཚ਺Ϩδελ Y' 8 ϊΠζ࣌ؒϨδελ Y 8 %1$.੍ޚϨδελ Y 8 %1$.੍ޚϨδελ Y 8 %1$.੍ޚϨδελ Y 8 %1$.੍ޚϨδελ Y 38 Ի੠νϟωϧ੍ޚϨδελ Y 38 ϑϨʔϜΧ΢ϯλ "16ͷϨδελҰཡ ׂ Ѫ
209. ۣܗ೾ΛΈ͍ͯ͘ ׂ Ѫ
210. Τϯϕϩʔϓ δΣωϨʔλ
     εΠʔϓ
     λΠϚʔ γʔέϯα ௕͞Χ΢ϯλ ۣܗ೾ͷߏ੒ ׂ Ѫ
211. ΞυϨε ֓ཁ Y CJU આ໌ 
     
      σϡʔςΟൺ
     
     C
     
     
     
     
     C
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     C
     
     
     
     
     C
     
     
      ࠶ੜ࣌ؒΧ΢ϯλΠωʔϒϧ  ΤϯϕϩʔϓσΟηʔϒϧ 
     
     
     ϘϦϡʔϜ·ͨ͸ΤϯϕϩʔϓσΟόΠμ σϡʔςΟൺ ݮਰͷ଎౓ͳͲΛ੍ޚ ۣܗ೾Ϩδελ ׂ Ѫ
212. ΞυϨε ֓ཁ Y CJU આ໌  εΠʔϓΠωʔϒϧ 
     
      प೾਺มԽ଎౓  प೾਺ͷมԽํ޲
     
     
     Լ߱
     
     
     ্ঢ 
     
     
     प೾਺มߋྔ
     ͷ৔߹มԽͳ͠ प೾਺ͷ૿ݮΛ੍ޚ ۣܗ೾Ϩδελ ׂ Ѫ
213. ΞυϨε ֓ཁ Y Y CJU આ໌ 
     
      ύϧελΠϚʔԼҐCJU CJU આ໌ 
     
      ΩʔΦϑΧ΢ϯλ 
     
      ύϧελΠϚʔ্ҐCJU प೾਺ͱ࠶ੜ࣌ؒΛ੍ޚ ۣܗ೾Ϩδελ ׂ Ѫ
214. Ͳ͏΍ͬͯΤϛϡϨʔτ͢Δ͔ ׂ Ѫ
215. 8FC"VEJP ׂ Ѫ
216. class Oscillator { constructor(type) { const AudioContext = window.AudioContext || window.webkitAudioContext this.context = new AudioContext(); this.oscillator = this.createOscillator({ kind: type }); // …লུ… } createOscillator(options = {}) { const oscillator = this.context.createOscillator(); // …লུ… return oscillator; } setPulseWidth(pulseWidth) { this.oscillator.setPeriodicWave(this.waves[`${pulseWidth}`]); } setFrequency(frequency) { this.oscillator.frequency.value = frequency; } changeFrequency(frequency) { this.oscillator.frequency.setValueAtTime(frequency, this.context.currentTime) } } +BWB4DSJQUଆͷॲཧ TFU1FSJPEJD8BWFͰ
     ΧελϜ೾ܗΛ࡞੒Ͱ͖Δ ׂ Ѫ
217. mergeInto(LibraryManager.library, { start_oscillator: function (index) { Module.NES.oscs[index].start(); }, set_oscillator_frequency: function (index, freq) { Module.NES.oscs[index].setFrequency(freq); }, change_oscillator_frequency: function (index, freq) { Module.NES.oscs[index].changeFrequency(freq); }, set_oscillator_volume: function (index, volume) { Module.NES.oscs[index].setVolume(volume); }, set_oscillator_pulse_width: function (index, width) { Module.NES.oscs[index].setPulseWidth(width); }, } 3VTU XBTN ଆ΁ͷϒϦοδ ࠶ͼNFSHF*OUPͰ
     3VTUଆ΁ެ։ ׂ Ѫ
218. ͋ͱ͸)[)[ͷपظͱ
     $16͔ΒͷΞΫηελΠϛϯά
     प೾਺΍ϘϦϡʔϜͷมಈ͕ൃੜ͢Δ
     ͷͰͦͷλΠϛϯάͰݺΜͰ΍Ε͹͍͍ ׂ Ѫ
219. pub fn update_counters(&mut self) { // …লུ… self.sweep_unit_counter += 1; self.change_frequency(); } pub fn update_envelope(&mut self) { // …লུ… unsafe { set_oscillator_volume(self.index, self.get_volume()); }; } fn change_frequency(&self) { unsafe { change_oscillator_frequency(self.index, self.frequency); } } 3VTU XBTN ଆͷॲཧ ׂ Ѫ
220. ͜͜·ͰͰϑΝϛίϯຊମͷ
     ϋʔυ΢ΣΞ͸Ұ௨Γ࣮૷Ͱ͖ͨ͸ͣ
221. 2
     ͜ΕͰશͯͷ30.͕ಈ࡞͢Δ͔
222. "
     ͠ͳ͍
223. ..$
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     NBOBHFNFOU
     DPOUSPMMFS
224. Χηοτ಺ʹ..$ͱݺ͹ΕΔ
     ϝϞϦ؅ཧ༻ͷిࢠճ࿏Λ͍࣋ͬͯΔ
     Χηοτ͕͋Δ ͜ͷػߏʹΑΓϓϩάϥϜ30.࠷େLJ#
     ΩϟϥΫλʔ30.LJ#ͷ੍ݶ͸௒͑ΒΕΔ ..$
225. ..$ʹΑΔϝϞϦͷϚοϐϯά৘ใ
     Λ.BQQFSͱݺͿ ..$
226. .BQQFSͷҰ෦ ·ͩ΄͔ʹ΋͋Δ .BQQFS
227. .BQQFS ࣮͸͍͕ͭ͜..$
     ҎԼ͸.BQQFSͷج൘
228. .BQQFS
229. ຊདྷϥΠτͰ͖ͳ͍Ydͷۭؒ
     ʹόϯΫ൪߸Λॻ͖ࠐΉ͜ͱͰ࠷େ,J#
     ·Ͱ30.Λ࢖༻͢Δ͜ͱ͕Ͱ͖Δ .BQQFS
230. ͲΜͳճ࿏ʹͳͬͯΔ͔
231. $)3
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     Λϥον͠
     ΞυϨεʹม׵ ΩϟϥΫλʔ30. όΠφϦΧ΢ϯλ .BQQFSͷճ࿏
232. impl Mmc { pub fn new(mapper: u8, bank: u8) -> Self { Mmc { bank, mapper } } pub fn set_bank(&mut self, bank: u8) { self.bank = bank; } pub fn create_chram_addr(&self, addr: u16) -> u16 { addr + (self.bank as u16) * 0x2000 } } .BQQFSͷ࣮૷ όϯΫͷઃఆ͔Β
     ΩϟϥΫλʔ30.΁ͷΞυϨε Λܭࢉͯ͠ฦ͢
     
233. ରԠ30.Λ૿΍͢ʹ͸
     ֤ͭͭ͜͜.BQQFSͷରԠ͕ඞཁ
234. ͜ΕΛ໢ཏ͢Δͱ͢΂ͯͷ
     30.͕ಈ࡞͢Δ͸ͣ
235. ύϑΥʔϚϯε
236. DISPNF
      8FC"TTFNCMZ
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      CJU pSFGPY
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     CPLVXFCqPXOFT 8FC"VEJP
     
     $BOWBTΛσΟηʔϒϧʹͨ͠ঢ়ଶͰ
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237. ͍͞͝ʹ !ϑΝϛίϯΤϛϡϨʔλ͸ҰਓͰ࣮૷͢Δͷʹ΋खࠒͳαΠζ !$16΍%."ɺׂΓࠐΈͳͲͷಈ࡞Λֶ΂Δ !ઌਓͷۤ࿑ͷยྡྷΛຯΘ͑Δ !ࣗ෼΋99ݴޠͰ΍ͬͯΈΔ͔ʂͱࢥͬͯ΋Β͑ͨΒخ͍͠Ͱ͢
238. ͋Γ͕ͱ͏͍͟͝·ͨ͠✨