諸君、私はゲームボーイが大好きだ - PHP & ゲームボーイ

YAPC::Asia Hachioji 2016 mid in Shinagawa の発表資料です。

Transcript

1. 諸君、私はゲームボーイが大好きだ PHP & ゲームボーイ Hey guys, I love GAMEBOY. PHP and GAMEBOY. 長谷川智希 HASEGAWA Tomoki
2. はじめに Introduction
4. PHPカンファレンス福岡の再放送 Repeat of phpconfuk
7. よもやこのタイトルでPHPの ためになる話を期待している方は いらっしゃらないと思いますが… I don’t think there are people who have great expectation of PHP tips in this talk …
9. 今風のカッコいいPHPの書き方 Modern style PHP coding.
10. 今風のカッコいいPHPの書き方 Modern style PHP coding.
11. 今風のカッコいいPHPの書き方 Modern style PHP coding. クールなライブラリやフレームワーク Cool libraries / frameworks.
12. 今風のカッコいいPHPの書き方 Modern style PHP coding. クールなライブラリやフレームワーク Cool libraries / frameworks.
13. 今風のカッコいいPHPの書き方 Modern style PHP coding. クールなライブラリやフレームワーク Cool libraries / frameworks. PHPをそんな風に使うのか！という驚き Exciting PHP usage.
14. 今風のカッコいいPHPの書き方 Modern style PHP coding. クールなライブラリやフレームワーク Cool libraries / frameworks. PHPをそんな風に使うのか！という驚き Exciting PHP usage.
15. 今風のカッコいいPHPの書き方 Modern style PHP coding. クールなライブラリやフレームワーク Cool libraries / frameworks. PHPをそんな風に使うのか！という驚き Exciting PHP usage. ゲームボーイの仕様の知識 Knowledge of GAMEBOY specs.
16. 今風のカッコいいPHPの書き方 Modern style PHP coding. クールなライブラリやフレームワーク Cool libraries / frameworks. PHPをそんな風に使うのか！という驚き Exciting PHP usage. ゲームボーイの仕様の知識 Knowledge of GAMEBOY specs.
17. この資料は後ほど公開します This slide will be published later.
19. 面白かったら投票お願いします！
20. #yapc8oji #yapc8ojiA 面白かったら投票お願いします！
21. ライフワーク: Web / iOSアプリ開発, ビール, 電子工作,
 サッカー観戦, レンタルカートレース, … 長谷川 智希 Web / iOS App Development, Beer, IoT, Watch soccer match, Rental Kart Racing, … デジタルサーカス株式会社 副団長CTO Digital Circus, Inc. Vice-master CTO Tokyo, Japan Lifework: @tomzoh
24. WE ARE HIRING!! Web Development Mobile App Development （ ） （iOS, Android) http://www.dgcircus.com Omotesando, Tokyo
25. 今日のテーマ Hey guys, I love GAMEBOY. PHP and GAMEBOY. 諸君、私はゲームボーイが大好きだ PHP & ゲームボーイ Today’s theme
26. 今年2月23日 23, February
29. terminal-gameboy-emulator
30. terminal-gameboy-emulator
31. #Z
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32. terminal-gameboy-emulator
33. エミュレータ エミュレータとは、機械装置やコンピュータのハードウェア （PC、ゲーム機など）の構造を、別の装置やソフトウェアで 模倣することで実現させたもの。 In computing, an emulator is hardware or software that enables one computer system to behave like another computer system. Emulator terminal-gameboy-emulator
34. terminal-gameboy-emulator
35. terminal-gameboy-emulator ??
36. demo
37. ！?
38. SUGOI
39. EXCITING
42. It’s
43. We are er.
44. WE CAN READ IT!!
46. ゲームボーイのCPU CPU of GAMEBOY
47. ゲームボーイのCPU CPU of GAMEBOY IUUQTFOXJLJQFEJBPSHXJLJ(BNF@#PZ
48. ゲームボーイのCPU CPU of GAMEBOY IUUQTFOXJLJQFEJBPSHXJLJ(BNF@#PZ
49. #Z
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51. レジスタ Registers Instructions 命令 Memory access and I/O メモリアクセスとI/O
52. レジスタ Registers Instructions 命令 Memory access and I/O メモリアクセスとI/O
53. LR35902の命令セット Instruction set of LR35902 http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html
54. LR35902 CPUのプログラム Program of CPU LR35902 +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 0200 42 E0 43 E0 A4 E0 41 E0 01 E0 02 EA 00 D0 EA 01 0210 D0 3E 80 E0 40 F0 44 FE 94 20 FA 3E 03 E0 40 3E 0220 E1 E0 47 E0 48 3E E5 E0 49 21 26 FF 3E 80 32 3E 0230 FF 32 36 77 21 06 FF 3E BF 22 3E 04 77 3E 01 EA 0240 00 20 31 FF CF AF 21 FF DF 06 00 32 05 20 FC 21 0250 FF CF 0E 10 06 00 32 05 20 FC 0D 20 F9 21 FF 9F 0260 0E 20 AF 06 00 32 05 20 FC 0D 20 F9 21 FF FE 06
55. プログラムの実行 Program execution +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0
56. プログラムの実行 Program execution +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0
57. プログラムの実行 Program execution AF 21 DF FF 0E 10 06 00 32 05 +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0
58. プログラムの実行 Program execution AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0
59. プログラムの実行 Program execution AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 AをAでXOR HLに0xffdfを入れる Cに0x10を入れる Bに0x00を入れる HLが指すアドレスにAの値を入れる Bを-1する Load 0xffdf into HL XOR A with A Load 0x10 into C Load 0x00 into B Load a value A has into memory address HL points at Decrement B
60. レジスタ Registers Instructions 命令 Memory access and I/O メモリアクセスとI/O
61. SHARP LR35902 のレジスタ SHARP LR35902 registers 
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     " ' # $ ) - 
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     41
    4UBDL
    1PJOUFS 1$
    1SPHSBN
    $PVOUFS 8bit / 16bit registers 16bit registers Flag register         ; / ) $     •Z - Zero Flag •N - Subtract Flag •H - Half Carry Flag •C - Carry Flag •0 - Not uses, always zero レジスタ: CPUが持つ、プログラム言語で言う変数 Registers: Variables in programing language.
62. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. PC
63. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. PC
64. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. PC
65. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. PC
66. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. PC
67. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. PC
68. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B PC
69. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B PC
70. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B PC
71. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B PC
72. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B PC
73. プログラムカウンタ Program Counter +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 01E0 01 E0 85 E1 D1 C1 F1 D9 AF 21 FF DF 0E 10 06 00 01F0 32 05 20 FC 0D 20 F9 3E 0D F3 E0 0F E0 FF AF E0 現在実行中の命令のアドレスを指す特殊なレジスタ。 A special register that contains the address of the instruction being executed now. AF 21 DF FF 0E 10 06 00 32 05 XOR A LD HL, 0xFFDF LD C, 0x10 LD B, 0x00 LD (HL-), A DEC B PC
74. LR35902 の命令 - LD LR35902 instructions - LD LD BC, 0x1234 BCレジスタに0x1234を入れる。 Load BC register with 0x1234. LD (BC), A BCレジスタの指し示すメモリアドレスにAレジスタ の内容を入れる。 Load a value A register has into memory BC register points at.
75. LR35902 の命令 - JP / CD LR35902 instructions - JP / CD JP 0x5678 0x5678番地にジャンプする。 Jump to location 0x5678. CALL 0x8181 スタックに現在のアドレスを入れて0x8181番地に ジャンプする。 Push current address to stack pointer, then jump to 0x8181. RET スタック先頭のアドレスにジャンプする。 Jump to the location of top of stack pointer.
76. レジスタ Registers Instructions 命令 Memory access and I/O メモリアクセスとI/O
77. ゲームボーイのハードウェアコンポネント CPU I/O Keys Sound Video Display Com Port Memory • RAM • Game 
 Cartridge • Video RAM Hardware components of GAMEBOY
78. GAMEBOYのメモリマップ Memory map of GAMEBOY $FFFF Interrupt Enable Flag I/O $FF80-$FFFE Zero Page - 127 bytes RAM $FF00-$FF7F Hardware I/O Registers I/O $FEA0-$FEFF Unusable Memory $FE00-$FE9F OAM - Object Attribute Memory Video RAM $E000-$FDFF Echo RAM - Reserved, Do Not Use $D000-$DFFF Internal RAM - Bank 1-7 (switchable - CGB only) RAM $C000-$CFFF Internal RAM - Bank 0 (fixed) $A000-$BFFF Cartridge RAM (If Available) Cartridge $9C00-$9FFF BG Map Data 2 Video RAM $9800-$9BFF BG Map Data 1 $8000-$97FF Character RAM $4000-$7FFF Cartridge ROM - Switchable Banks 1-xx Cartridge $0150-$3FFF Cartridge ROM - Bank 0 (fixed) $0100-$014F Cartridge Header Area $0000-$00FF Restart and Interrupt Vectors ROM IUUQXXXIVDLpOHBNFTDPN QJE
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79. GAMEBOYのメモリマップ Memory map of GAMEBOY $FFFF Interrupt Enable Flag I/O $FF80-$FFFE Zero Page - 127 bytes RAM $FF00-$FF7F Hardware I/O Registers I/O $FEA0-$FEFF Unusable Memory $FE00-$FE9F OAM - Object Attribute Memory Video RAM $E000-$FDFF Echo RAM - Reserved, Do Not Use $D000-$DFFF Internal RAM - Bank 1-7 (switchable - CGB only) RAM $C000-$CFFF Internal RAM - Bank 0 (fixed) $A000-$BFFF Cartridge RAM (If Available) Cartridge $9C00-$9FFF BG Map Data 2 Video RAM $9800-$9BFF BG Map Data 1 $8000-$97FF Character RAM $4000-$7FFF Cartridge ROM - Switchable Banks 1-xx Cartridge $0150-$3FFF Cartridge ROM - Bank 0 (fixed) $0100-$014F Cartridge Header Area $0000-$00FF Restart and Interrupt Vectors ROM IUUQXXXIVDLpOHBNFTDPN QJE
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80. GAMEBOYのメモリマップ Memory map of GAMEBOY $FFFF Interrupt Enable Flag I/O $FF80-$FFFE Zero Page - 127 bytes RAM $FF00-$FF7F Hardware I/O Registers I/O $FEA0-$FEFF Unusable Memory $FE00-$FE9F OAM - Object Attribute Memory Video RAM $E000-$FDFF Echo RAM - Reserved, Do Not Use $D000-$DFFF Internal RAM - Bank 1-7 (switchable - CGB only) RAM $C000-$CFFF Internal RAM - Bank 0 (fixed) $A000-$BFFF Cartridge RAM (If Available) Cartridge $9C00-$9FFF BG Map Data 2 Video RAM $9800-$9BFF BG Map Data 1 $8000-$97FF Character RAM $4000-$7FFF Cartridge ROM - Switchable Banks 1-xx Cartridge $0150-$3FFF Cartridge ROM - Bank 0 (fixed) $0100-$014F Cartridge Header Area $0000-$00FF Restart and Interrupt Vectors ROM IUUQXXXIVDLpOHBNFTDPN QJE
    #Z
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    IUUQTDPNNPOTXJLJNFEJBPSHXJOEFYQIQ DVSJE メモリマップドI/O Memory mapped I/O
81. エミュレータのCPU命令実装 CPU instructions implementation of emulator
82. CPU実装のソースファイル Source file of CPU implementation
83. CPU実装のソースファイル Source file of CPU implementation
84. class Opcode { public static function run(Core $core, $address) { $function = 'opcode'.$address; return Opcode::$function($core); } public static function opcode0(Core $core) { // Do Nothing... } public static function opcode1(Core $core) { $core->registerC = $core->memoryRead($core->programCounter); $core->registerB = $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = ($core->programCounter + 2) & 0xFFFF; } Opcodeの実装 Implementation of opcodes
85. class Opcode { public static function run(Core $core, $address) { $function = 'opcode'.$address; return Opcode::$function($core); } public static function opcode0(Core $core) { // Do Nothing... } public static function opcode1(Core $core) { $core->registerC = $core->memoryRead($core->programCounter); $core->registerB = $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = ($core->programCounter + 2) & 0xFFFF; } Opcodeの実装 Implementation of opcodes 0x00 NOP
86. class Opcode { public static function run(Core $core, $address) { $function = 'opcode'.$address; return Opcode::$function($core); } public static function opcode0(Core $core) { // Do Nothing... } public static function opcode1(Core $core) { $core->registerC = $core->memoryRead($core->programCounter); $core->registerB = $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = ($core->programCounter + 2) & 0xFFFF; } Opcodeの実装 Implementation of opcodes 0x01 LD BC, nn
87. LD BC, 0x1234 BCレジスタに0x1234を入れる。 Load BC register with 0x1234.
88. LD BC, d16 LD BC, d16 http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html
89. LD BC, d16 LD BC, d16 http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html
90. LD BC, d16 LD BC, d16 http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html
91. public static function opcode1(Core $core) { $core->registerC =
 $core->memoryRead($core->programCounter); $core->registerB = 
 $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = 
 ($core->programCounter + 2) & 0xFFFF; } LC BC, d16 の実装 Implementation of LD BC, d16 PC PC + 1 0x01 0x34 0x12 LD BC, d16 0x1234 Data Address
92. public static function opcode1(Core $core) { $core->registerC =
 $core->memoryRead($core->programCounter); $core->registerB = 
 $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = 
 ($core->programCounter + 2) & 0xFFFF; } LC BC, d16 の実装 Implementation of LD BC, d16 PC PC + 1 0x01 0x34 0x12 LD BC, d16 0x1234 Data Address BCレジスタに指定したアドレスのメモリの値を入れる。 Load BC register with nn.
93. public static function opcode1(Core $core) { $core->registerC =
 $core->memoryRead($core->programCounter); $core->registerB = 
 $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = 
 ($core->programCounter + 2) & 0xFFFF; } LC BC, d16 の実装 Implementation of LD BC, d16 PC PC + 1 0x01 0x34 0x12 LD BC, d16 0x1234 Data Address PCを次の命令まで進める。 Move PC register to next instruction.
94. public static function opcode1(Core $core) { $core->registerC =
 $core->memoryRead($core->programCounter); $core->registerB = 
 $core->memoryRead(($core->programCounter + 1) & 0xFFFF); $core->programCounter = 
 ($core->programCounter + 2) & 0xFFFF; } LC BC, d16 の実装 Implementation of LD BC, d16 PC PC + 1 0x01 0x34 0x12 LD BC, d16 0x1234 Data Address
95. QUIZ
96. $core->memoryRead($core->programCounter); // //Main RAM, MBC RAM, GBC Main RAM, VRAM, etc. // //Main Core Memory public $memory = []; Core.php
97. $core->memoryRead($core->programCounter); // //Main RAM, MBC RAM, GBC Main RAM, VRAM, etc. // //Main Core Memory public $memory = []; Core.php メインメモリは配列になっている。 Main memory is defined as array.

98. $core->memoryRead($core->programCounter); // //Main RAM, MBC RAM, GBC Main RAM, VRAM, etc. // //Main Core Memory public $memory = []; Core.php メインメモリは配列になっている。 Main memory is defined as array.
 なぜ $core->memory[$core->programCounter] ではない？ Q Why not $core->memory[$core->programCounter] ?
99. GAMEBOYのメモリマップ Memory map of GAMEBOY $FFFF Interrupt Enable Flag I/O $FF80-$FFFE Zero Page - 127 bytes RAM $FF00-$FF7F Hardware I/O Registers I/O $FEA0-$FEFF Unusable Memory $FE00-$FE9F OAM - Object Attribute Memory Video RAM $E000-$FDFF Echo RAM - Reserved, Do Not Use $D000-$DFFF Internal RAM - Bank 1-7 (switchable - CGB only) RAM $C000-$CFFF Internal RAM - Bank 0 (fixed) $A000-$BFFF Cartridge RAM (If Available) Cartridge $9C00-$9FFF BG Map Data 2 Video RAM $9800-$9BFF BG Map Data 1 $8000-$97FF Character RAM $4000-$7FFF Cartridge ROM - Switchable Banks 1-xx Cartridge $0150-$3FFF Cartridge ROM - Bank 0 (fixed) $0100-$014F Cartridge Header Area $0000-$00FF Restart and Interrupt Vectors ROM IUUQXXXIVDLpOHBNFTDPN QJE
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100. GAMEBOYのメモリマップ Memory map of GAMEBOY $FFFF Interrupt Enable Flag I/O $FF80-$FFFE Zero Page - 127 bytes RAM $FF00-$FF7F Hardware I/O Registers I/O $FEA0-$FEFF Unusable Memory $FE00-$FE9F OAM - Object Attribute Memory Video RAM $E000-$FDFF Echo RAM - Reserved, Do Not Use $D000-$DFFF Internal RAM - Bank 1-7 (switchable - CGB only) RAM $C000-$CFFF Internal RAM - Bank 0 (fixed) $A000-$BFFF Cartridge RAM (If Available) Cartridge $9C00-$9FFF BG Map Data 2 Video RAM $9800-$9BFF BG Map Data 1 $8000-$97FF Character RAM $4000-$7FFF Cartridge ROM - Switchable Banks 1-xx Cartridge $0150-$3FFF Cartridge ROM - Bank 0 (fixed) $0100-$014F Cartridge Header Area $0000-$00FF Restart and Interrupt Vectors ROM IUUQXXXIVDLpOHBNFTDPN QJE
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101. エミュレータのI/O実装 I/O implementations of emulator
102. ゲームボーイのハードウェアコンポネント CPU I/O Keys Sound Video Display Com Port Memory • RAM • Game 
 Cartridge • Video RAM Hardware components of GAMEBOY
103. ゲームボーイのハードウェアコンポネント CPU I/O Keys Sound Video Display Com Port Memory • RAM • Game 
 Cartridge • Video RAM Hardware components of GAMEBOY CPUはキーにI/O経由でアクセスする CPU accesses keys through the I/O
104. 実行のメインループ $keyboard = new Keyboard($core); while (true) { $core->run(); $keyboard->check(); } boot.php Main loop of excution
105. 実行のメインループ $keyboard = new Keyboard($core); while (true) { $core->run(); $keyboard->check(); } boot.php メインループ Main loop.
 Main loop of excution
106. キー状態の取得 public function __construct(Core $core) { $this->core = $core; exec('stty -icanon -echo'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() { $key = fread($this->file, 1); if (!empty($key)) { $this->keyDown($key); } elseif (!empty($this->keyPressing)) { $this->keyUp($this->keyPressing); } $this->keyPressing = $key; } Get key status
107. キー状態の取得 public function __construct(Core $core) { $this->core = $core; exec('stty -icanon -echo'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() { $key = fread($this->file, 1); if (!empty($key)) { $this->keyDown($key); } elseif (!empty($this->keyPressing)) { $this->keyUp($this->keyPressing); } $this->keyPressing = $key; } Get key status 標準入力を開いて… Open standard in and...

108. キー状態の取得 public function __construct(Core $core) { $this->core = $core; exec('stty -icanon -echo'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() { $key = fread($this->file, 1); if (!empty($key)) { $this->keyDown($key); } elseif (!empty($this->keyPressing)) { $this->keyUp($this->keyPressing); } $this->keyPressing = $key; } Get key status 標準入力を開いて… Open standard in and...
 fread()で1文字取る！ Get a character with fread!
109. I/O 読み込み public function memoryRead($address) { if ($address < 0x4000) { } elseif ($address >= 0xFF00) { switch ($address) { case 0xFF00: return 0xC0 | $this->memory[0xFF00]; break; I/O read
110. I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00
111. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00
112. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00
113. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00
114. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00
115. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00
116. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
117. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
118. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
119. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
120. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
121. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
122. public function memoryWrite($address, $data) { if ($address < 0x8000) { //I/O Registers (GB + GBC): } elseif ($address == 0xFF00) { $this->memory[0xFF00] = ($data & 0x30) | (((($data & 0x20) == 0) ? ($this->JoyPad >> 4) : 0xF) & ((($data & 0x10) == 0) ? ($this->JoyPad & 0xF) : 0xF)); } elseif ($address == 0xFF02) { I/O 書き込み I/O write 7 6 5 4 3 2 1 0 - - P15 out P14 out P13 in P12 in P11 in P10 in - - 0 1 A B Select Start - - 1 0 → ← ↑ ↓ I/O port 0xFF00 7 6 5 4 3 2 1 0 A B Select Start → ← ↑ ↓ $this->JoyPad:
123. 結論 Conclusion
124. エミュレータのソースを読むのは楽しい
125. Webアプリとも
 フレームワークとも フロントエンドの非同期アプリとも
 違う感じのコード群
126. ハードウェアの動作を ソフトウェアで表現
127. とても面白い
128. 皆さんも是非読んでみてください
129. Thanks WE ARE HIRING @tomzoh
130. Appendix
131. リンク • http://marc.rawer.de/Gameboy/Docs/GBCPUman.pdf • https://en.wikipedia.org/wiki/Game_Boy • http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html • http://gbdev.gg8.se/wiki/articles/The_Cartridge_Header • http://gameboy.mongenel.com/dmg/asmmemmap.html • http://www.z80.info/z80inst.txt Resources
132. セットアップ How to run $ git clone https://github.com/gabrielrcouto/ php-terminal-gameboy-emulator.git $ cd php-terminal-gameboy-emulator $ composer install -o $ bin/php-gameboy drmario.rom
133. ROMいずこ How to get ROM file
134. ROMいずこ How to get ROM file
135. ROMいずこ How to get ROM file ＿人人人人人人人＿ ＞　drmario.gb　＜ ￣Y^Y^Y^Y^Y^Y￣
136. ROMいずこ How to get ROM file
137. ROMいずこ How to get ROM file
138. ROMいずこ How to get ROM file $rom = base64_decode(file_get_contents($argv[1])); $rom = file_get_contents($filename);
139. ボトルネックはどこか PHP5.5.30 OSX Native FPS: 4 PHP7.0.1 VirtualBox FPS: 14 We need more FPS
140. エミュレータのビデオ実装 Video implementations of emulator
141. タイルでの色表現 ゲームボーイは4色出せるが1色&パターンで表現している。 GAMEBOY’s display has 4 colors. PHP version uses only 1 color with pattern. Color using tile pattern
142. Pentiumのアドレスバスとデータバス IUUQEPXOMPBEJOUFMDPNEFTJHOQFOUJVNEBUBTIUTQEG $$
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143. ノイマン型コンピュータ http://e-words.jp/w/ノイマン型コンピュータ.html von Neumann architecture プログラムをデータとして記憶装置に格納し、
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144. エンディアン Endian
145. エンディアン Endian PC PC + 1 0x01 0x34 0x12 LD BC, nn 0x1234 Data Address LD BC, 0x1234 BCレジスタに0x1234を入れる。 Load BC register with 0x1234.
146. エンディアン Endian UTF-16のBOM = Byte Order Mark = ビッグエンディアンかリトルエンディアンか
147. ストリームの非ブロックモード public function __construct(Core $core) { $this->core = $core; exec('stty -icanon -echo'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() { $key = fread($this->file, 1); if (!empty($key)) { $this->keyDown($key); } elseif (!empty($this->keyPressing)) { $this->keyUp($this->keyPressing); } $this->keyPressing = $key; } Non-blocking mode on a stream
148. ストリームの非ブロックモード public function __construct(Core $core) { $this->core = $core; exec('stty -icanon -echo'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() { $key = fread($this->file, 1); if (!empty($key)) { $this->keyDown($key); } elseif (!empty($this->keyPressing)) { $this->keyUp($this->keyPressing); } $this->keyPressing = $key; } Non-blocking mode on a stream
149. ストリームの非ブロックモード public function __construct(Core $core) { $this->core = $core; exec('stty -icanon -echo'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() { $key = fread($this->file, 1); if (!empty($key)) { $this->keyDown($key); } elseif (!empty($this->keyPressing)) { $this->keyUp($this->keyPressing); } $this->keyPressing = $key; } Non-blocking mode on a stream ストリームのモードを非ブロックに設定 Set non-blocking mode on a stream.