Tomoki Hasegawa, profile picture
Uploaded byTomoki Hasegawa
PDF, PPTX4,825 views

Reading php terminal-gameboy-emulator

The document discusses a PHP implementation of a Game Boy emulator that runs in the terminal. It explains how the emulator works, including how it simulates the Game Boy's CPU, memory, display, sound, buttons and communication port in PHP code. It provides code examples for emulating the CPU instructions and reading button input from the keyboard.

Embed presentation

Download as PDF, PPTX
Reading php-terminal-gameboy-emulator Digital Circus, Inc. HASEGAWA Tomki
HASEGAWA Tomoki @tomzoh Web / iOS App Development, Rental Kart Race, Beer, IoT crafting, … hasegawa
 tomoki Digital Circus, Inc. Vice-master CTO Tokyo, Japan Interests
・ Web Development ・ Mobile Apps Development ・ Service （ ） （iOS, Android) （http://appbuilder.jp） Twitter: @tomzoh
Twitter: @tomzoh
Today’s theme Reading php-terminal-gameboy-emulator
Today’s theme Reading php-terminal-gameboy-emulator
By Transfrom JPEG version and remove white background. Original by Evan-Amos. - Media:Game-Boy-FL.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=37808150
23, February
😮
😮
😮 Awesome!!
😮 Awesome!! Waste of talent!!
😮 Awesome!! Waste of talent!! Cool!!
Source Files
Source Files It’s PHP !
Source Files It’s PHP ! We can read it.
Source Files It’s PHP ! Yes, We can! We can read it.
Source Files It’s PHP ! Yes, We can! Yes, We can! We can read it.
Today’s theme Reading php-terminal-gameboy-emulator
Components of GAMEBOY • CPU / Memory • Display • Sound • Buttons • Communication Port
Components of GAMEBOY • CPU / Memory • Display • Sound • Buttons • Communication Port
Buttons
Buttons - Keyboard.php <?php namespace GameBoy; class Keyboard { public $core; public $file; public $keyPressing = null; public $started = false; public function __construct(Core $core) { $this->core = $core; exec('stty -icanon'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() {
Buttons - Keyboard.php <?php namespace GameBoy; class Keyboard { public $core; public $file; public $keyPressing = null; public $started = false; public function __construct(Core $core) { $this->core = $core; exec('stty -icanon'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() {
How to sense buttons
How to sense buttons $this->file = fopen('php://stdin', 'r');
How to sense buttons $this->file = fopen('php://stdin', 'r'); $key = fread($this->file, 1);
Simple
CPU / Memory
CPU
SHARP LR35902 instruction set http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html 1byte instructions Prefix CB instructions 144 instructions 256 instructions+ = 400 instructions
SHARP LR35902 resistors http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html 15 … 8 7 … 0 A F B C H L 15 … 8 7 … 0 SP (Stack Pointer) PC (Program Counter) 8bit / 16bit resistors 16bit resistors Flag registor 7 6 5 4 3 2 1 0 Z N H C 0 0 0 0 •Z - Zero Flag •N - Subtract Flag •H - Half Carry Flag •C - Carry Flag •0 - Not uses, always zero
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - -
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Length in bytes Address LD A, d8 2 8 - - - -
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Duration in cyclesLength in bytes Address LD A, d8 2 8 - - - -
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Duration in cycles Flags affected Length in bytes Address LD A, d8 2 8 - - - -
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - -
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Load 0x0301 into BC resistor x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - Load 0x99 into A resistor PC (Program Counter)
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
Instruction in memory 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Load A resistor’s value into memory indicates with BC resistor x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
CPU - Opcode.php <?php namespace GameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) {
CPU - Opcode.php <?php namespace GameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { x0 x1 x2 0x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - -
CPU - Opcode.php <?php namespace GameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { Implementation of 0x00 NOP x0 x1 x2 0x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - -
CPU - Opcode.php <?php namespace GameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { x0 x1 x2 0x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Implementation of 0x01 LD BC, d16
//LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter)
//LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter) C
//LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter) B
//LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter)
Implementation of JP a16 x3 cx JP a16 3 16 - - - -
Implementation of JP a16 x3 cx JP a16 3 16 - - - - Jump to address a16
Implementation of JP a16 x3 cx JP a16 3 16 - - - - Jump to address a16 0x0000 0x0001 0x0002 0xc3 0x29 0x03 JP a16 0x0329 Data Instruction Address
Implementation of JP a16 x3 cx JP a16 3 16 - - - - Jump to address a16 0x0000 0x0001 0x0002 0xc3 0x29 0x03 JP a16 0x0329 Data Instruction Address Jump to address 0x0329
Implementation of JP a16 x3 cx JP a16 3 16 - - - - Jump to address a16 //JP nn //#0xC3: $this->functionsArray[] = function ($parentObj) { $parentObj->programCounter = ($parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF) << 8) + $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); }; 0x0000 0x0001 0x0002 0xc3 0x29 0x03 JP a16 0x0329 Data Instruction Address Jump to address 0x0329
Run loop public function executeIteration() { $op = 0; while ($this->stopEmulator == 0) { $op = $this->memoryRead($this->programCounter); $this->programCounter = ($this->programCounter + 1) & 0xFFFF; $this->CPUTicks = $this->TICKTable[$op]; $this->OPCODE[$op]($this); $this->updateCore(); } }
Not difficult Simple, Easy
Let’s read php-terminal-gameboy-emulator
Thanks @tomzoh WE ARE HIRING Drupal / Mobile App Engineer
 Digital Circus, Inc. Tokyo, Japan @tomzoh
Links • 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
More FPS? PHP5.5.30 OSX Native FPS: 4 PHP7.0.1 VirtualBox FPS: 14
Duration in cycles table <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3
Duration in cycles table <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3 1 machine cycle = 4 clocks
Duration in cycles table <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3 1 machine cycle = 4 clocks x4 cx CALL NZ,a16 3 24/12 - - - -
Duration in cycles table <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3 1 machine cycle = 4 clocks x4 cx CALL NZ,a16 3 24/12 - - - -Call address a16 if A resistor is zero. It takes 24 clocks.
5月 チケット販売開始 /トーク募集開始
 6月上旬 トーク募集〆切
 6月下旬 タイムテーブル決定 iOS Developers Conference Japan 2016 2016.08.20 https://iosdc.jp スポンサー企業さま、大絶賛募集中

More Related Content

PPTX
Why there are two ways to access IO ports
byAmrElkamash1
 
PDF
Displaying Animated Images on GLCD display with LPC2148 Microcontroller
byOmkar Rane
 
PPTX
Unit iv introduction to 8051 microcontroller ppts
bySreenivas Hanumandla
 
PDF
8051 microcontroller
byThirunavakkarasu kannusamy
 
PPT
8085_Microprocessor(simar).ppt
byKanikaJindal9
 
PDF
PECL を数えてみた
byy-uti
 
PPT
Lcd
byRital Gajjar
 
PPTX
テスト事始め phpblt #3
byrittyan
 
Why there are two ways to access IO ports
byAmrElkamash1
 
Displaying Animated Images on GLCD display with LPC2148 Microcontroller
byOmkar Rane
 
Unit iv introduction to 8051 microcontroller ppts
bySreenivas Hanumandla
 
8051 microcontroller
byThirunavakkarasu kannusamy
 
8085_Microprocessor(simar).ppt
byKanikaJindal9
 
PECL を数えてみた
byy-uti
 
Lcd
byRital Gajjar
 
テスト事始め phpblt #3
byrittyan
 

Similar to Reading php terminal-gameboy-emulator

PPTX
Architecture of 8051
byhello_priti
 
PPTX
Unit 4 Introduction to Microcontrollers.pptxUnit-3 IO Interfacing-1.pptximpor...
bymandakalyan811
 
PDF
Notes of 8085 micro processor Programming for BCA, MCA, MSC (CS), MSC (IT) &...
byssuserd6b1fd
 
PPTX
Embedded system and Internet of things-1.pptx
byinfinitynira
 
PPTX
Presentation-3final.pptx microprocessors
bymehedihasancse20
 
PPT
8085
bySunil Dutt
 
PPTX
17
bydano2osu
 
PPT
10 8086 instruction set
byShivam Singhal
 
PPTX
Lec03
bysiddu kadiwal
 
PDF
Microprocessor
byadnanqayum
 
PDF
Basics of building a blackfin application
byPantech ProLabs India Pvt Ltd
 
DOC
Microprocessor Basics 8085 Ch-1
byNeelam Kapoor
 
PDF
8051 Architecture, blocks and salient features
byptkarule
 
PPTX
Home works summary.pptx
byHebaEng
 
PDF
8085 micro processor
byArun Umrao
 
PPTX
Microprocessor history1
byHarshitParkar6677
 
PPTX
Microprocessor history1
byHarshitParkar6677
 
PDF
Https _doc-0o-c4-apps-viewer.googleusercontent
byvijaydeepakg
 
PPT
MICROPROCESSOR
byfakirmalamgir
 
PPT
8085
bySreejita Majumder
 
Architecture of 8051
byhello_priti
 
Unit 4 Introduction to Microcontrollers.pptxUnit-3 IO Interfacing-1.pptximpor...
bymandakalyan811
 
Notes of 8085 micro processor Programming for BCA, MCA, MSC (CS), MSC (IT) &...
byssuserd6b1fd
 
Embedded system and Internet of things-1.pptx
byinfinitynira
 
Presentation-3final.pptx microprocessors
bymehedihasancse20
 
8085
bySunil Dutt
 
17
bydano2osu
 
10 8086 instruction set
byShivam Singhal
 
Lec03
bysiddu kadiwal
 
Microprocessor
byadnanqayum
 
Basics of building a blackfin application
byPantech ProLabs India Pvt Ltd
 
Microprocessor Basics 8085 Ch-1
byNeelam Kapoor
 
8051 Architecture, blocks and salient features
byptkarule
 
Home works summary.pptx
byHebaEng
 
8085 micro processor
byArun Umrao
 
Microprocessor history1
byHarshitParkar6677
 
Microprocessor history1
byHarshitParkar6677
 
Https _doc-0o-c4-apps-viewer.googleusercontent
byvijaydeepakg
 
MICROPROCESSOR
byfakirmalamgir
 
8085
bySreejita Majumder
 

More from Tomoki Hasegawa

PDF
PHPでスマホアプリにプッシュ通知する
byTomoki Hasegawa
 
PDF
Drupal 8 - モダンなアーキテクチャのPHPベースOSS CMS
byTomoki Hasegawa
 
PDF
とある受託ベンダの開発環境
byTomoki Hasegawa
 
PDF
AppStore申請を一式まるっと自動化する
byTomoki Hasegawa
 
PDF
Drupal8 〜 モダンなアーキテクチャのPHPベース OSS CMS
byTomoki Hasegawa
 
PDF
「これを買っている人はこれも買っています」実装してみた PHP side
byTomoki Hasegawa
 
PDF
Stargazer Meetup #1
byTomoki Hasegawa
 
PDF
オプショナル型。〜なんとなく付ける ! ? 撲滅〜 改訂版
byTomoki Hasegawa
 
PDF
エンジニアのお祭り
byTomoki Hasegawa
 
PDF
「これを買っている人はこれも買っています」実装してみた
byTomoki Hasegawa
 
PDF
はじめてのiOSアプリ開発　Swift対応版
byTomoki Hasegawa
 
PDF
tvOSでWebSocketを使う
byTomoki Hasegawa
 
PDF
PUSH通知証明書作成ツールを作った
byTomoki Hasegawa
 
PDF
TestFlightみたいなのを自作する
byTomoki Hasegawa
 
PDF
tvOSネイティブアプリを作る
byTomoki Hasegawa
 
PDF
CakePHP3ウォークスルー
byTomoki Hasegawa
 
PDF
勉強会のこちら側とあちら側
byTomoki Hasegawa
 
PDF
PHPerのためのSwift入門
byTomoki Hasegawa
 
PDF
iOS Developers Conference Japan 2016
byTomoki Hasegawa
 
PDF
PHPカンファレンス福岡に 行ってきた
byTomoki Hasegawa
 
PHPでスマホアプリにプッシュ通知する
byTomoki Hasegawa
 
Drupal 8 - モダンなアーキテクチャのPHPベースOSS CMS
byTomoki Hasegawa
 
とある受託ベンダの開発環境
byTomoki Hasegawa
 
AppStore申請を一式まるっと自動化する
byTomoki Hasegawa
 
Drupal8 〜 モダンなアーキテクチャのPHPベース OSS CMS
byTomoki Hasegawa
 
「これを買っている人はこれも買っています」実装してみた PHP side
byTomoki Hasegawa
 
Stargazer Meetup #1
byTomoki Hasegawa
 
オプショナル型。〜なんとなく付ける ! ? 撲滅〜 改訂版
byTomoki Hasegawa
 
エンジニアのお祭り
byTomoki Hasegawa
 
「これを買っている人はこれも買っています」実装してみた
byTomoki Hasegawa
 
はじめてのiOSアプリ開発　Swift対応版
byTomoki Hasegawa
 
tvOSでWebSocketを使う
byTomoki Hasegawa
 
PUSH通知証明書作成ツールを作った
byTomoki Hasegawa
 
TestFlightみたいなのを自作する
byTomoki Hasegawa
 
tvOSネイティブアプリを作る
byTomoki Hasegawa
 
CakePHP3ウォークスルー
byTomoki Hasegawa
 
勉強会のこちら側とあちら側
byTomoki Hasegawa
 
PHPerのためのSwift入門
byTomoki Hasegawa
 
iOS Developers Conference Japan 2016
byTomoki Hasegawa
 
PHPカンファレンス福岡に 行ってきた
byTomoki Hasegawa
 

Recently uploaded

PDF
C Unit-II: Input and Output, Operators, Control Structures/Statements
byKuvempu University
 
PPTX
Privacy Preserving Detection of Sensitive Data Exposure (1).pptx
byNikitaMandhan4
 
PPTX
Fast-tracking quality for hundreds applications with automated testing layers
byBogdan Plieshka
 
PDF
One Agent to Rule Them All - The Fellowship of AI Agents
byIvo Andreev
 
PPTX
Computer_Virus_Presentation_With_Slide7.pptx
byHEVISLIVE
 
PPTX
Code Assessment Tools .pptx
byCodexpro
 
PPTX
AI Agent Overview - Why we need AI Agent
byAlokGope
 
PDF
How Modern Custom Software is Revolutionizing Mortgage Lending Processes -Ma...
byMatellio
 
PDF
Using Agentic RAG for Research - Demonstration of NotebookLM
byRathish Chandra Gatti,Ph.D
 
PDF
From Experiment to Enterprise: Scaling AI Coding Assistants Across Engineerin...
byMaxim Salnikov
 
PDF
2025 Ask the AI and eLearning panel of experts
byRustici Software
 
PPTX
Modern P&C Insurance Software for Smarter, Faster Operations.pptx
byInsurance Tech Services
 
PPTX
Custom chat gpt integration services.pptx
byChetu
 
PPTX
OTT Content Analytics Enhanced by ALTBalaji Data Scraping.pptx
byyashpatric
 
PDF
DSD-INT 2025 Introduction to Hydrology Suite - Slootjes
byDeltares
 
PPTX
Cyber_Security_and_Safety_for Class 9 Student
bymailerswifttest080
 
PDF
DSD-INT 2025 Hydrological Modelling in Society Assumptions, Impacts, and Appl...
byDeltares
 
PDF
Why Partnering with a Devops Solutions Company Transforms Your IT Operations.pdf
byjustinmark8297
 
PDF
C Unit-III: Arrays, Structures and Unions
byKuvempu University
 
PDF
Top 5 Security Essentials for Modern API Development
byFicode Technologies Limited
 
C Unit-II: Input and Output, Operators, Control Structures/Statements
byKuvempu University
 
Privacy Preserving Detection of Sensitive Data Exposure (1).pptx
byNikitaMandhan4
 
Fast-tracking quality for hundreds applications with automated testing layers
byBogdan Plieshka
 
One Agent to Rule Them All - The Fellowship of AI Agents
byIvo Andreev
 
Computer_Virus_Presentation_With_Slide7.pptx
byHEVISLIVE
 
Code Assessment Tools .pptx
byCodexpro
 
AI Agent Overview - Why we need AI Agent
byAlokGope
 
How Modern Custom Software is Revolutionizing Mortgage Lending Processes -Ma...
byMatellio
 
Using Agentic RAG for Research - Demonstration of NotebookLM
byRathish Chandra Gatti,Ph.D
 
From Experiment to Enterprise: Scaling AI Coding Assistants Across Engineerin...
byMaxim Salnikov
 
2025 Ask the AI and eLearning panel of experts
byRustici Software
 
Modern P&C Insurance Software for Smarter, Faster Operations.pptx
byInsurance Tech Services
 
Custom chat gpt integration services.pptx
byChetu
 
OTT Content Analytics Enhanced by ALTBalaji Data Scraping.pptx
byyashpatric
 
DSD-INT 2025 Introduction to Hydrology Suite - Slootjes
byDeltares
 
Cyber_Security_and_Safety_for Class 9 Student
bymailerswifttest080
 
DSD-INT 2025 Hydrological Modelling in Society Assumptions, Impacts, and Appl...
byDeltares
 
Why Partnering with a Devops Solutions Company Transforms Your IT Operations.pdf
byjustinmark8297
 
C Unit-III: Arrays, Structures and Unions
byKuvempu University
 
Top 5 Security Essentials for Modern API Development
byFicode Technologies Limited
 

Reading php terminal-gameboy-emulator

  • 1.
  • 2.
    HASEGAWA Tomoki @tomzoh Web /iOS App Development, Rental Kart Race, Beer, IoT crafting, … hasegawa
 tomoki Digital Circus, Inc. Vice-master CTO Tokyo, Japan Interests
  • 3.
    ・ Web Development ・Mobile Apps Development ・ Service （ ） （iOS, Android) （http://appbuilder.jp） Twitter: @tomzoh
  • 4.
  • 5.
  • 6.
  • 7.
    By Transfrom JPEGversion and remove white background. Original by Evan-Amos. - Media:Game-Boy-FL.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=37808150
  • 8.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
    Source Files It’s PHP! We can read it.
  • 20.
    Source Files It’s PHP! Yes, We can! We can read it.
  • 21.
    Source Files It’s PHP! Yes, We can! Yes, We can! We can read it.
  • 22.
  • 23.
    Components of GAMEBOY •CPU / Memory • Display • Sound • Buttons • Communication Port
  • 24.
    Components of GAMEBOY •CPU / Memory • Display • Sound • Buttons • Communication Port
  • 25.
  • 28.
    Buttons - Keyboard.php <?php namespaceGameBoy; class Keyboard { public $core; public $file; public $keyPressing = null; public $started = false; public function __construct(Core $core) { $this->core = $core; exec('stty -icanon'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() {
  • 29.
    Buttons - Keyboard.php <?php namespaceGameBoy; class Keyboard { public $core; public $file; public $keyPressing = null; public $started = false; public function __construct(Core $core) { $this->core = $core; exec('stty -icanon'); $this->file = fopen('php://stdin', 'r'); stream_set_blocking($this->file, false); } public function check() {
  • 30.
    How to sensebuttons
  • 31.
    How to sensebuttons $this->file = fopen('php://stdin', 'r');
  • 32.
    How to sensebuttons $this->file = fopen('php://stdin', 'r'); $key = fread($this->file, 1);
  • 33.
  • 34.
  • 35.
  • 36.
    SHARP LR35902 instructionset http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html 1byte instructions Prefix CB instructions 144 instructions 256 instructions+ = 400 instructions
  • 37.
    SHARP LR35902 resistors http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html 15… 8 7 … 0 A F B C H L 15 … 8 7 … 0 SP (Stack Pointer) PC (Program Counter) 8bit / 16bit resistors 16bit resistors Flag registor 7 6 5 4 3 2 1 0 Z N H C 0 0 0 0 •Z - Zero Flag •N - Subtract Flag •H - Half Carry Flag •C - Carry Flag •0 - Not uses, always zero
  • 38.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - -
  • 39.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Length in bytes Address LD A, d8 2 8 - - - -
  • 40.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Duration in cyclesLength in bytes Address LD A, d8 2 8 - - - -
  • 41.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Duration in cycles Flags affected Length in bytes Address LD A, d8 2 8 - - - -
  • 42.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - -
  • 43.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
  • 44.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Load 0x0301 into BC resistor x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
  • 45.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
  • 46.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - Load 0x99 into A resistor PC (Program Counter)
  • 47.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
  • 48.
    Instruction in memory 0x00000x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Load A resistor’s value into memory indicates with BC resistor x0 x1 x2 xE 0x 3x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Address LD A, d8 2 8 - - - - PC (Program Counter)
  • 51.
    CPU - Opcode.php <?php namespaceGameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) {
  • 52.
    CPU - Opcode.php <?php namespaceGameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { x0 x1 x2 0x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - -
  • 53.
    CPU - Opcode.php <?php namespaceGameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { Implementation of 0x00 NOP x0 x1 x2 0x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - -
  • 54.
    CPU - Opcode.php <?php namespaceGameBoy; class Opcode { public $functionsArray = []; public function __construct() { //NOP //#0x00: $this->functionsArray[] = function ($parentObj) { //Do Nothing... }; //LD BC, nn //#0x01: $this->functionsArray[] = function ($parentObj) { x0 x1 x2 0x LD BC, d16 3 12 - - - - NOP 1 4 - - - - LD (BC), A 1 8 - - - - Implementation of 0x01 LD BC, d16
  • 55.
    //LD BC, nn //#0x01: $this->functionsArray[]= function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter)
  • 56.
    //LD BC, nn //#0x01: $this->functionsArray[]= function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter) C
  • 57.
    //LD BC, nn //#0x01: $this->functionsArray[]= function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter) B
  • 58.
    //LD BC, nn //#0x01: $this->functionsArray[]= function ($parentObj) { $parentObj->registerC = $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); $parentObj->registerB = $parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF); $parentObj->programCounter = ($parentObj->programCounter + 2) & 0xFFFF; }; Implementation of LD BC, d16 0x0000 0x0001 0x0002 0x003 0x004 0x005 0x0301 0x01 0x01 0x03 0x3e 0x99 0x02 0x99 LD BC, d16 0x0301 LD A, d8 0x99 LD (BC), A Data Instruction Address PC (Program Counter)
  • 59.
    Implementation of JPa16 x3 cx JP a16 3 16 - - - -
  • 60.
    Implementation of JPa16 x3 cx JP a16 3 16 - - - - Jump to address a16
  • 61.
    Implementation of JPa16 x3 cx JP a16 3 16 - - - - Jump to address a16 0x0000 0x0001 0x0002 0xc3 0x29 0x03 JP a16 0x0329 Data Instruction Address
  • 62.
    Implementation of JPa16 x3 cx JP a16 3 16 - - - - Jump to address a16 0x0000 0x0001 0x0002 0xc3 0x29 0x03 JP a16 0x0329 Data Instruction Address Jump to address 0x0329
  • 63.
    Implementation of JPa16 x3 cx JP a16 3 16 - - - - Jump to address a16 //JP nn //#0xC3: $this->functionsArray[] = function ($parentObj) { $parentObj->programCounter = ($parentObj->memoryRead(($parentObj->programCounter + 1) & 0xFFFF) << 8) + $parentObj->memoryReader[$parentObj->programCounter]($parentObj, $parentObj->programCounter); }; 0x0000 0x0001 0x0002 0xc3 0x29 0x03 JP a16 0x0329 Data Instruction Address Jump to address 0x0329
  • 64.
    Run loop public functionexecuteIteration() { $op = 0; while ($this->stopEmulator == 0) { $op = $this->memoryRead($this->programCounter); $this->programCounter = ($this->programCounter + 1) & 0xFFFF; $this->CPUTicks = $this->TICKTable[$op]; $this->OPCODE[$op]($this); $this->updateCore(); } }
  • 65.
  • 66.
  • 67.
    Thanks @tomzoh WE ARE HIRING Drupal/ Mobile App Engineer
 Digital Circus, Inc. Tokyo, Japan @tomzoh
  • 68.
    Links • 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
  • 69.
    More FPS? PHP5.5.30 OSXNative FPS: 4 PHP7.0.1 VirtualBox FPS: 14
  • 70.
    Duration in cyclestable <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3
  • 71.
    Duration in cyclestable <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3 1 machine cycle = 4 clocks
  • 72.
    Duration in cyclestable <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3 1 machine cycle = 4 clocks x4 cx CALL NZ,a16 3 24/12 - - - -
  • 73.
    Duration in cyclestable <?php namespace GameBoy; class TickTables { public static $primary = [ //Number of machine cycles for each instruction: /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F*/ 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, //0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, //1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, //2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, //3 1 machine cycle = 4 clocks x4 cx CALL NZ,a16 3 24/12 - - - -Call address a16 if A resistor is zero. It takes 24 clocks.
  • 74.
    5月 チケット販売開始 /トーク募集開始
 6月上旬トーク募集〆切
 6月下旬 タイムテーブル決定 iOS Developers Conference Japan 2016 2016.08.20 https://iosdc.jp スポンサー企業さま、大絶賛募集中