ファミコンエミュレータを作った / Yeeh! PHP NES emulator's here!!

௕୩઒ஐر ϑΝϛίϯΤϛϡϨʔλΛ࡞ͬͨ

௕୩઒ஐر !UPN[PI

௕୩઒ஐر !UPN[PI ΤϛϡϨʔλͷ࿩Λॻ͖·ͨ͠

ϥΠϑϫʔΫ ςοΫΧϯϑΝϨϯεӡӦࢀՃ 8FCJ04ΞϓϦ։ൃ Ϗʔϧ $16 ϨτϩήʔϜػ ిࢠ޻࡞  
αοΧʔ؍ઓ ϨϯλϧΧʔτϨʔε ʜ σδλϧαʔΧεגࣜձࣾ ෭ஂ௕$50 !UPN[PI

8FC%FWFMPQNFOUXJUI 8&"3&)*3*/( IUUQXXXEHDJSDVTDPN 0NPUFTBOEP 5PLZP

ࠓ೔ͷςʔϚ

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF/JOUFOEP'BNJDPN$POTPMF4FU'-QOH

ϑΝϛίϯΤϛϡϨʔλΛ࡞ͬͨ

ΤϛϡϨʔλ

QIQUFSNJOBMOFTFNVMBUPS

IUUQTXXXIBTFHBXBUPNPLJDPNCMPHQIQUFSNJOBMOFTFNVMBUPS

͸͡Ίʹँࣙ

IUUQTCVJMEFSTDPOJPUPLZPTFTTJPOBBCDFECG

ײಈͱিಈ

ͯ͞ຊ୊

͖ͬ͞ͷࣗݾ঺հ

ϥΠϑϫʔΫ ςοΫΧϯϑΝϨϯεӡӦࢀՃ 8FCJ04ΞϓϦ։ൃ Ϗʔϧ $16 ϨτϩήʔϜػ ిࢠ޻࡞  
αοΧʔ؍ઓ ϨϯλϧΧʔτϨʔε ʜ σδλϧαʔΧεגࣜձࣾ ෭ஂ௕$50 !UPN[PI

࣌ؒͰ΋࿩ͤΔͱࢥ͏

ࠓ೔͸͕࣌ؒ෼

ΤϛϡϨʔλͷ໘ന͍ͱ͜Ζ ͘͝Ұ෦͝঺հ

ΤϛϡϨʔλͷ໘ന͍ͱ͜Ζ ͘͝Ұ෦͝঺հ ࢒Γͷ෦෼͸ʢ࠾୒͞ΕΕ͹ʣͲ͔͜ͷ  1)1ΧϯϑΝϨϯεPS࣍ճҎ߱ʹʜ

ϑΝϛίϯͷجૅ஌ࣝ

$16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒

83". ,# $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒

83". ,# $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ ίϯτϩʔϥ

83". ,# $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ "16 ίϯτϩʔϥ

83". ,# $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ "16 α΢ϯυ ίϯτϩʔϥ

83". ,# 116 $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ "16 α΢ϯυ ίϯτϩʔϥ

83". ,# 116 $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ "16 α΢ϯυ ը໘දࣔ ίϯτϩʔϥ

83". ,# 73". ,# 116 $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ "16 α΢ϯυ ը໘දࣔ
ίϯτϩʔϥ

Χηοτ 83". ,# 73". ,# 116 $16 ϑΝϛίϯͷϋʔυ΢ΣΞߏ੒ "16 α΢ϯυ
ը໘දࣔ ίϯτϩʔϥ

ࠓ೔͸$16ͷ࿩

31"& wϕʔεͷΧελϜ$16ʢϦίʔ੡ʣ w "16 %."#$%໋ྩ

31"& wϕʔεͷΧελϜ$16ʢϦίʔ੡ʣ w "16 %."#$%໋ྩ "QQMF** 1$Τϯδϯʜ

CJU$16

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF31"&KQH

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF31"&KQH σʔλόεCJU

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF31"&KQH σʔλόεCJU YYGG

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF31"&KQH σʔλόεCJU ΞυϨεόεCJU YYGG

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF31"&KQH σʔλόεCJU ΞυϨεόεCJU YYGG YYGGGG ,#

ϝϞϦΞΫηε wʙ''''ͷΞυϨεΛࢦఆ wόΠτͷ஋ΛಡΈॻ͖ wର৅͸ϝϞϦʢ30.3".ʣʹݶΒͳ͍

ϝϞϦϚοϓ

ϝϞϦϚοϓ YYGGGGͷ όΠτʹ  Կ͕͋Δ͔

όοςϦʔόοΫΞοϓ3".,# ϓϩάϥϜ30.,# ϓϩάϥϜ30.,# $ '''' ϫʔΫ3".,# *0ϙʔτ 116
*0ϙʔτ "16 FUD

Χηοτ

ըظతͩͬͨ

ઐ༻ήʔϜػͰͳ͘ ൚༻ήʔϜػ

༷ʑͳϝʔΧ͔Β ҆ՁʹήʔϜ͕ڙڅ

ϓϩάϥϜ30.

ϓϩάϥϜ30. $16όε

ϓϩάϥϜ30. $16όε ΩϟϥΫλ30.

ϓϩάϥϜ30. $16όε ΩϟϥΫλ30. 116όε

*0ϙʔτ "16 FUD

ϓϩάϥϜ30.,# ϓϩάϥϜ30.,# $ ''''

ϓϩάϥϜ30.,# ϓϩάϥϜ30.,# $ '''' ϓϩάϥϜ30. $16όε ΩϟϥΫλ30. 116όε

ϓϩάϥϜ30.,# ϓϩάϥϜ30.,# $ ''''

ϓϩάϥϜ30.,# ϓϩάϥϜ30.,# $ '''' ϓϩάϥϜ30.ͷ  ΞυϨε͸ϏοτͰ 
දݱͰ͖Δ

ϓϩάϥϜ30.,# ϓϩάϥϜ30.,# $ '''' ϓϩάϥϜ30.ͷ  ΞυϨε͸ϏοτͰ 
දݱͰ͖Δ C JUT

$16ͱ͸ wϓϩάϥϜ࣮ߦ؀ڥ wϝϞϦʢ30.3".ʣ͔Β໋ྩΛಡΈࠐΜͰ࣮ߦ͢Δ w໋ྩ͸όΠτ wύϥϝλΛ໋࣋ͭྩ΋͋Δ wϨδελʢม਺ʣΛ࣋ͭ

31"&ͷϓϩάϥϜ 78 D8 A9 10 8D 00 20 A2 FF
9A AD 02 20 10 FB AD 02 20 10 FB A0 FE A2 05 BD D7 07 C9 0A B0 0C CA 10 F6 AD FF 07 C9 A5 D0 02 A0 D6 20 CC 90 8D 11 40 8D 70 07 A9 A5 8D FF 07 8D A7 07 A9 0F 8D 15 $8000 $8010 $8020 $8030 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

31"&ͷϓϩάϥϜ 78 D8 A9 10 8D 00 20 A2 FF
9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

31"&ͷϓϩάϥϜ $78 $D8 $A9 $10 $8D $00 $20 $A2 $ff
$9A $8000 $8001 $8002 $8004 $8007 $8009 SEI CLD LDA #imm STA abs LDX #imm TXS 78 D8 A9 10 8D 00 20 A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

"-%"JNN

"-%"JNN w"Ϩδελʹ໋ྩͷ࣍ͷ஋Λ୅ೖ͢Δ

"-%"JNN w"Ϩδελʹ໋ྩͷ࣍ͷ஋Λ୅ೖ͢Δ 78 D8 A9 10 8D 00 20 A2
FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

"-%"JNN w"Ϩδελʹ໋ྩͷ࣍ͷ஋Λ୅ೖ͢Δ 78 D8 A9 10 8D 00 20 A2
FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"ϨδελʹΛ୅ೖ͢Δ

%45"BCT

%45"BCT w"Ϩδελͷ஋Λ໋ྩͷ࣍ͷ஋Ͱࢦఆͨ͠  ΞυϨεʹ֨ೲ͢Δ

%45"BCT w"Ϩδελͷ஋Λ໋ྩͷ࣍ͷ஋Ͱࢦఆͨ͠  ΞυϨεʹ֨ೲ͢Δ 78 D8 A9 10 8D 00 20
A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ

31"&ͷϓϩάϥϜ $78 $D8 $A9 $10 $8D $00 $20 $A2 $ff
$9A $8000 $8001 $8002 $8004 $8007 $8009 SEI CLD LDA #imm STA abs LDX #imm TXS

31"&ͷϓϩάϥϜ $78 $D8 $A9 $10 $8D $00 $20 $A2 $ff
$9A $8000 $8001 $8002 $8004 $8007 $8009 SEI CLD LDA #imm STA abs LDX #imm TXS "ϨδελʹΛ୅ೖ͢Δ

31"&ͷϓϩάϥϜ $78 $D8 $A9 $10 $8D $00 $20 $A2 $ff
$9A $8000 $8001 $8002 $8004 $8007 $8009 SEI CLD LDA #imm STA abs LDX #imm TXS "ϨδελʹΛ୅ೖ͢Δ "Ϩδελͷ஋Λʹ֨ೲ͢Δ

ΤϛϡϨʔλͷ$16໋ྩ࣮૷

"-%"JNN w"Ϩδελʹ໋ྩͷ࣍ͷ஋Λ୅ೖ͢Δ ˞ίʔυΛҰ෦มߋͯ͠؆ུԽ͍ͯ͠·͢ɻਖ਼͍͠ίʔυ͸QIQUFSNJOBMOFTFNVMBUPSͷ$QVQIQΛ͝ཡ͍ͩ͘͞

"-%"JNN w"Ϩδελʹ໋ྩͷ࣍ͷ஋Λ୅ೖ͢Δ case 'LDA': $this->registers->a = $this->fetch($this->registers->pc); $this->registers->p->negative = !!($this->registers->a
& 0x80); $this->registers->p->zero = !$this->registers->a; break; ˞ίʔυΛҰ෦มߋͯ͠؆ུԽ͍ͯ͠·͢ɻਖ਼͍͠ίʔυ͸QIQUFSNJOBMOFTFNVMBUPSͷ$QVQIQΛ͝ཡ͍ͩ͘͞

˞ίʔυΛҰ෦มߋͯ͠؆ུԽ͍ͯ͠·͢ɻਖ਼͍͠ίʔυ͸QIQUFSNJOBMOFTFNVMBUPSͷ$QVQIQΛ͝ཡ͍ͩ͘͞ %45"BCT w"Ϩδελͷ஋Λ໋ྩͷ࣍ͷ஋Ͱࢦఆͨ͠  ΞυϨεʹ֨ೲ͢Δ

˞ίʔυΛҰ෦มߋͯ͠؆ུԽ͍ͯ͠·͢ɻਖ਼͍͠ίʔυ͸QIQUFSNJOBMOFTFNVMBUPSͷ$QVQIQΛ͝ཡ͍ͩ͘͞ %45"BCT w"Ϩδελͷ஋Λ໋ྩͷ࣍ͷ஋Ͱࢦఆͨ͠  ΞυϨεʹ֨ೲ͢Δ case 'STA': $this->write( $this->fetch($this->registers->pc, "Word"), $this->registers->a);
break;

Ͳ͏ࢥ͍·͔͢ʁ೉͍͠ʁ

ΉͬͪΌ۪௚ͳίʔυ

$16ͷ໋ྩ࠷খ୯Ґ

$16ͷ໋ྩ࠷খ୯Ґ ͜͏͢Δ͔͠ͳ͍

໘ന͍Ͱ͢Ͷʂ

ͪͳΈʹʜ

QIQUFSNJOBMHBNFCPZFNVMBUPS

ήʔϜϘʔΠ

ήʔϜϘʔΠ #Z5SBOTGSPN+1&(WFSTJPOBOESFNPWFXIJUFCBDLHSPVOE0SJHJOBMCZ&WBO"NPT.FEJB(BNF#PZ'-KQH 1VCMJD%PNBJO IUUQTDPNNPOTXJLJNFEJBPSHXJOEFYQIQ DVSJE

ήʔϜϘʔΠ w;ϕʔεͷΧελϜ$16ʢγϟʔϓ੡ʣ

ήʔϜϘʔΠ w;ϕʔεͷΧελϜ$16ʢγϟʔϓ੡ʣ wΞυϨεόεCJUσʔλόεCJU  ʢϑΝϛίϯͱಉ͡ʣ

/** * Opcode #0x01. * LD BC, nn * @param
Core $core */ 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 #0x01. * LD BC, nn * @param
Core $core */ 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; } #$Ϩδελʹ໋ྩͷ࣍ͷ஋Λ֨ೲ͢Δ

/** * Opcode #0x02. * LD (BC), A * @param
Core $core */ public static function opcode2(Core $core) { $core->memoryWrite( ($core->registerB << 8) + $core->registerC, $core->registerA); }

/** * Opcode #0x02. * LD (BC), A * @param
Core $core */ public static function opcode2(Core $core) { $core->memoryWrite( ($core->registerB << 8) + $core->registerC, $core->registerA); } #$ϨδελͷΞυϨεʹ"Ϩδελͷ஋Λ֨ೲ͢Δ

ಉ͡ʂ

$16ͷΤϛϡϨʔγϣϯ͸  ͲΜͳ$16Ͱ΋ಉ͡ײ͡ʹͳΔ

·ͱΊ

wΤϛϡϨʔλͷίʔυ͸ܾͯ͠೉͍͠΋ͷͰ͸ͳ͍ ·ͱΊ

wΤϛϡϨʔλͷίʔυ͸ܾͯ͠೉͍͠΋ͷͰ͸ͳ͍ wϋʔυ΢ΣΞͷ࢓༷Λιʔείʔυͱͯ͠දݱ  )BSEXBSFTQFDJpDBUJPOBT$PEF ·ͱΊ

wΤϛϡϨʔλͷίʔυ͸ܾͯ͠೉͍͠΋ͷͰ͸ͳ͍ wϋʔυ΢ΣΞͷ࢓༷Λιʔείʔυͱͯ͠දݱ  )BSEXBSFTQFDJpDBUJPOBT$PEF w໘ന͍ͷͰΈΜͳ΋ಡΜͰΈͯʂͦͯ͠ॻ͍ͯΈͯʂ  ࣸܦ͓͢͢Ίɻ ·ͱΊ

wΤϛϡϨʔλͷίʔυ͸ܾͯ͠೉͍͠΋ͷͰ͸ͳ͍ w$16Ҏ֎΋ฉ͖͔ͨͬͨΒ5XJUUFSʹQIQTUVEZΛ෇͚ͯ ʮ΋ͬͱฉ͖͍ͨʂʯͬͯπΠʔτ͓͍͍ͯͯͩ͘͠͞ʂ wϋʔυ΢ΣΞͷ࢓༷Λιʔείʔυͱͯ͠දݱ  )BSEXBSFTQFDJpDBUJPOBT$PEF w໘ന͍ͷͰΈΜͳ΋ಡΜͰΈͯʂͦͯ͠ॻ͍ͯΈͯʂ  ࣸܦ͓͢͢Ίɻ ·ͱΊ

͓ΘΓ !UPN[PI

ࠂ஌

1)1FS,BJHJ 'SJ 4VO .BSEBZT εϙϯαʔืूதʂ IUUQTQIQFSLBJHJKQ

1)1ΧϯϑΝϨϯεઋ୆ τʔΫืूத ʢຊ೔ʣ ·Ͱ ઋ୆Ͱ๻ͱѲखʂ

༨ஊ

খֶੜൿٕ ΧηοτࣼΊࠩ͠ ༨ஊ

খֶੜൿٕ ΧηοτࣼΊࠩ͠ ͬͪ͜Λු͔ͤΔͱ  ىಈ͠ͳͦ͏ ༨ஊ

খֶੜൿٕ ΧηοτࣼΊࠩ͠ ͬͪ͜Λු͔ͤΔͱ  ىಈ͠ͳͦ͏ ͬͪ͜Λු͔ͤΔͱΩϟϥ͕  յΕͨΓͯ͠໘ന͍ͷ͔΋ʁ ༨ஊ

31"& wϕʔεͷΧελϜ$16ʢϦίʔ੡ʣ w 116 %."#$%໋ྩ

CJU$16

IUUQTKBXJLJQFEJBPSHXJLJϑΝϛϦʔίϯϐϡʔλNFEJB'JMF31"&KQH σʔλόεCJU ΞυϨεόεCJU YYGG YYGGGG ,#

༨ஊ

༨ஊ IUUQTKBXJLJQFEJBPSHXJLJ.$NFEJB'JMF.$1@+1(

༨ஊ IUUQTKBXJLJQFEJBPSHXJLJ.$NFEJB'JMF.$1@+1( σʔλ  όεʷ σʔλόεʷ

༨ஊ IUUQTKBXJLJQFEJBPSHXJLJ.$NFEJB'JMF.$1@+1( σʔλ  όεʷ σʔλόεʷ YYGGGG

༨ஊ IUUQTKBXJLJQFEJBPSHXJLJ.$NFEJB'JMF.$1@+1( σʔλ  όεʷ σʔλόεʷ ΞυϨεόεʷ ΞυϨ εόε ʷ YYGGGG

༨ஊ IUUQTKBXJLJQFEJBPSHXJLJ.$NFEJB'JMF.$1@+1( σʔλ  όεʷ σʔλόεʷ ΞυϨεόεʷ ΞυϨ εόε ʷ YYGGGG
YYGGGGGF .#

IUUQEPXOMPBEJOUFMDPNEFTJHOQFOUJVNEBUBTIUTQEG $$දࣔܧঝ IUUQTDPNNPOTXJLJNFEJBPSHXJOEFYQIQ DVSJE ༨ஊ

IUUQEPXOMPBEJOUFMDPNEFTJHOQFOUJVNEBUBTIUTQEG $$දࣔܧঝ IUUQTDPNNPOTXJLJNFEJBPSHXJOEFYQIQ DVSJE D0ʙD63 A3ʙA31 ༨ஊ

30.ٵ͍ग़͠ ༨ஊ

༨ஊ

*0ϙʔτ "16 FUD

*0ϙʔτ "16 FUD ಡΈॻ͖͢Δ͜ͱͰपลσόΠεͱ  ௨৴ *0 ͢Δ

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ ͕ͷܗͰ ֨ೲ͞Ε͍ͯΔ

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ ͕ͷܗͰ ֨ೲ͞Ε͍ͯΔ ϦτϧΤϯσΟΞϯ

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ ͕ͷܗͰ ֨ೲ͞Ε͍ͯΔ ϦτϧΤϯσΟΞϯ ΨϦόʔཱྀߦه

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ ͕ͷܗͰ ֨ೲ͞Ε͍ͯΔ ϦτϧΤϯσΟΞϯ ΨϦόʔཱྀߦه फڭઓ૪

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ ͕ͷܗͰ ֨ೲ͞Ε͍ͯΔ ϦτϧΤϯσΟΞϯ ΨϦόʔཱྀߦه फڭઓ૪ όΠΤϯσΟΞϯ

A2 FF 9A AD 02 20 10 FB AD $8000 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F w"Ϩδελͷ஋Λʹ֨ೲ͢Δ ͕ͷܗͰ ֨ೲ͞Ε͍ͯΔ ϦτϧΤϯσΟΞϯ ΨϦόʔཱྀߦه फڭઓ૪ όΠΤϯσΟΞϯ ฏ࿨͕๚Εͨ

͓ΘΓ !UPN[PI

ファミコンエミュレータを作った / Yeeh! PHP NES emulator's here!!

ファミコンエミュレータを作った / Yeeh! PHP NES emulator's here!!

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