| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| at29c020 | ATMEL 29C020 256Kx8 FEEPROM | | | | | |
| at29c040 | ATMEL 29C040 512Kx8 FEEPROM | | | | | |
| at29c040a | ATMEL 29C040A 512Kx8 FEEPROM | | | | | |
| at386 | PC/AT 386 (12 MHz, MF2 Keyboard) | 1988 | <generic> | ibm5170 | ibm5170 | |
| at386sx | PC/AT 386SX (16 MHz, MF2 Keyboard) | 1988 | <generic> | ibm5170 | ibm5170 | |
| at45db041 | AT45DB041 | | | | | |
| at45db081 | AT45DB081 | | | | | |
| at45db161 | AT45DB161 | | | | | |
| at486 | PC/AT 486 (25 MHz, MF2 Keyboard) | 1990 | <generic> | ibm5170 | ibm5170 | |
| at586 | PC/AT 586 (PIIX4) | 1990 | <generic> | ibm5170 | ibm5170 | |
| at586x3 | PC/AT 586 (PIIX3) | 1990 | <generic> | ibm5170 | ibm5170 | |
| at89c4051 | Atmel AT89C4051 | | | | | |
| at89c52 | Atmel AT89C52 | | | | | |
| at89s52 | Atmel AT89S52 | | | | | |
| ata_interface | ATA Interface | | | | | |
| ata_slot | ATA Connector | | | | | |
| atacf | ATA CompactFlash Card | | | | | |
| ataflash | ATA Flash PC Card | | | | | |
| atakaast | Ataka asteroidov | 1992 | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse | |
| atamanot | Computer Quiz Atama no Taisou (Japan) | 1983 | Yachiyo Denki / Uni Enterprize | | | |
| ataqandr | Ataque Androide - Moon Cresta (FAR S.A. Spanish bootleg) | 1980? | bootleg (FAR S.A.) | mooncrst | mooncrst | |
| atari_cage | Atari CAGE | | | | | |
| atari_cage_seattle | Atari CAGE Seattle | | | | | |
| atari_cx85 | Atari CX85 Numeric Keypad | | | | | |
| atari_dpc | Atari DPC | | | | | |
| atari_fdc | Atari FDC | | | | | |
| atari_maria | Atari MARIA | | | | | |
| atari_rle | Atari RLE Motion Objects | | | | | |
| atari_trakball | Atari CX22/CX80 Trak-Ball | | | | | |
| atari1050 | Atari 1050 Dual Density Disk Drive | | | | | |
| atari810 | Atari 810 Disk Drive | | | | | |
| atariabc286 | ABC-286/30 | 1989 | Atari | ibm5170 | ibm5170 | |
| atarians | The Atarians | 1976 | Atari | | | genpin |
| atarifb | Atari Football (revision 2) | 1978 | Atari | | | |
| atarifb1 | Atari Football (revision 1) | 1978 | Atari | atarifb | atarifb | |
| atarifb2 | Atari Football II | 1978 | Atari | atarifb | atarifb | |
| atarifb4 | Atari 4 Player Football | 1979 | Atari | atarifb | atarifb | |
| atarimo | Atari Motion Objects | | | | | |
| ataripc1 | PC1 | 1987 | Atari | ibm5150 | ibm5150 | |
| ataripc3 | PC3 | 1988 | Atari | ibm5150 | ibm5150 | |
| ataripc4 | PC4 | 1987 | Atari | ibm5170 | ibm5170 | |
| ataripc5 | PC5 | 1988 | Atari | ibm5170 | ibm5170 | |
| atarisac | Atari SAC Sound Board | | | | | |
| atariscom | Atari Sound Communications | | | | | |
| atarisy1 | Atari System 1 BIOS | 1984 | Atari Games | | | |
| atarivad | Atari VAD | | | | | |
| ataxx | Ataxx (rev 5) | 1990 | Leland Corporation | | | |
| ataxx_80186_sound | 80186 DAC (Ataxx) | | | | | |
| ataxxa | Ataxx (rev 4) | 1990 | Leland Corporation | ataxx | ataxx | |
| ataxxe | Ataxx (Europe) | 1990 | Leland Corporation | ataxx | ataxx | |
| ataxxj | Ataxx (Japan) | 1990 | Leland Corporation (Capcom license) | ataxx | ataxx | |
| atc1415 | ATC-1415 | 199? | A-Trend | ibm5170 | ibm5170 | |
| atc1425a | ATC-1425A (SiS 85C496/85C497) | 1995 | A-Trend | | | |
| atc1425b | ATC-1425B (SiS 85C496/85C497) | 1996 | A-Trend | | | |
| atehate | Athena no Hatena? | 1993 | Athena | | | |
| atetb3482 | Tetris (bootleg set 6, with UM3482) | 1988 | bootleg | atetris | atetris | |
| atetb5205 | Tetris (bootleg set 7, with OKI M5205) | 1988 | bootleg | atetris | atetris | |
| atetris | Tetris (set 1) | 1988 | Atari Games | | | |
| atetrisa | Tetris (set 2) | 1988 | Atari Games | atetris | atetris | |
| atetrisb | Tetris (bootleg set 1) | 1988 | bootleg | atetris | atetris | |
| atetrisb2 | Tetris (bootleg set 2) | 1988 | bootleg | atetris | atetris | |
| atetrisb3 | Tetris (bootleg set 3) | 1988 | bootleg | atetris | atetris | |
| atetrisb4 | Tetris (bootleg set 4) | 1988 | bootleg | atetris | atetris | |
| atetrisb5 | Tetris (bootleg set 5) | 1988 | bootleg | atetris | atetris | |
| atetrisbp | Tetris (bartop, prototype) | 1989 | Atari Games | atetris | atetris | |
| atetrisc | Tetris (cocktail set 1) | 1989 | Atari Games | atetris | atetris | |
| atetrisc2 | Tetris (cocktail set 2) | 1989 | Atari Games | atetris | atetris | |
| athena | Athena | 1986 | SNK | | | |
| athenab | Athena (bootleg) | 1986 | SNK | athena | athena | |
| athlonxp | Amd Athlon XP | | | | | |
| ati_vga | ATi VGA i/f | | | | | |
| atjsa1 | Atari JSA I Sound Board | | | | | |
| atjsa2 | Atari JSA II Sound Board | | | | | |
| atjsa3 | Atari JSA III Sound Board | | | | | |
| atjsa3s | Atari JSA IIIs Sound Board | | | | | |
| atkgld | All the King's Gold (0152152, US) | 2007 | Aristocrat | aristmk6 | | |
| atla_ltd | Atlantis (LTD) | 1981 | LTD | | | genpin |
| atlantca | Atlantica (Russia) (Atronic) (set 1) | 2002 | Atronic | | | |
| atlantcaa | Atlantica (Russia) (Atronic) (set 2) | 2002 | Atronic | atlantca | atlantca | |
| atlantip | Atlantis (rev. 3) | 1989 | Bally | | | genpin |
| atlantis | Battle of Atlantis (set 1) | 1981 | Comsoft | | | |
| atlantis2 | Battle of Atlantis (set 2) | 1981 | Comsoft | atlantis | atlantis | |
| atlantisb | Battle of Atlantis (bootleg) | 1981 | bootleg | atlantis | atlantis | |
| atlantol | Atlant Olimpic (Italian bootleg) | 1996 | bootleg | trackfld | trackfld | |
| atleta | Atleta | 1991 | Inder | | | genpin |
| atm | ATM-Turbo (ATM-CP) | 1991 | MicroART | spec128 | spec128 | |
| atm18mcc | ATM18 Mini Chess Computer (English) | 2009 | Elektor | | | |
| atmega1280 | Atmel ATmega1280 | | | | | |
| atmega168 | Atmel ATmega168 | | | | | |
| atmega2560 | Atmel ATmega2560 | | | | | |
| atmega328 | Atmel ATmega328 | | | | | |
| atmega644 | Atmel ATmega644 | | | | | |
| atmega88 | Atmel ATmega88 | | | | | |
| atmel_29c010 | Atmel 29C010 Flash | | | | | |
| atmel_29c020 | Atmel 29C020 Flash | | | | | |
| atmel_49f4096 | Atmel AT49F4096 Flash | | | | | |
| atmtb2 | ATM-Turbo 2 | 1992 | MicroART | spec128 | spec128 | |
| atmtb2plus | ATM-Turbo 2+ | 1993 | MicroART | spec128 | spec128 | |
| atom | Atom | 1979 | Acorn | | | |
| atom_discpack | Acorn Atom Disc Pack | | | | | |
| atom_econet | Acorn Atom Econet Interface | | | | | |
| atom_sid | AtomSID | | | | | |
| atombb | Atom with BBC Basic | 1982 | Acorn | atom | atom | |
| atombjt | Atom (bootleg of Bombjack Twin) | 1993 | bootleg (Kyon K.) | bjtwin | bjtwin | |
| atomboy | Atomic Boy (revision B) | 1985 | Irem (Memetron license) | wilytowr | wilytowr | |
| atomboya | Atomic Boy (revision A) | 1985 | Irem (Memetron license) | wilytowr | wilytowr | |
| atomeb | Atom with Eprom Box | 1979 | Acorn | atom | atom | |
| atomicp | Atomic Point (Korea) | 1990 | Philko | | | |
| atompunk | Atomic Punk (US) | 1991 | Irem America (licensed from Hudson Soft) | dynablst | dynablst | |
| ator | Ator (set 1, 2 bumpers) | 1985 | Video Dens | | | genpin |
| ator3bmp | Ator (set 2, 3 bumpers) | 1985 | Video Dens | ator | ator | genpin |
| atrbonpk | Bonus Poker (Atronic) | 200? | Atronic | | | |
| atricmon | I C Money (Atronic) | 200? | Atronic | | | |
| atronic | Atronic SetUp/Clear Chips (Russia, set 1) | 1999 | Atronic | | | |
| atronica | Atronic SetUp/Clear Chips (Russia, set 2) | 1999 | Atronic | atronic | atronic | |
| atrwild | Wild Thing (Atronic) | 200? | Atronic | | | |
| att4425 | AT&T Teletype 4425 | 1983 | AT&T | | | |
| att610 | 610 Business Communication Terminal | 1986 | AT&T | | | |
| att615 | 615 MT | 1987 | AT&T | | | |
| att630 | 630 MTG | 1986 | AT&T | | | |
| att730x | 730X | 1990 | AT&T | | | |
| attache | Attaché | 1982 | Otrona | | | |
| attache816 | Attaché 8:16 | 1983 | Otrona | attache | attache | |
| attack | Attack | 1980 | Playmatic | | | genpin |
| attackf | Attack (bootleg of Defender) | 1980 | bootleg (Famaresa) | defender | defender | |
| attackfc | Attack Force (encrypted) | 1979? | Electronic Games Systems | | | |
| attackfcu | Attack Force (unencrypted) | 1979? | bootleg? | attackfc | attackfc | |
| attckexd | Attack (set 1) | 1977 | Exidy | | | |
| attckexd2 | Attack (set 2) | 1977 | Exidy | attckexd | attckexd | |
| attckufo | Attack UFO | 1980 | Ryoto Electric Co. | | | |
| attila | Attila The Hun | 1984 | Game Plan | | | genpin |
| attiny15 | Atmel ATtiny15 | | | | | |
| atturbo | PC/AT Turbo (12 MHz, MF2 Keyboard) | 1987 | <generic> | ibm5170 | ibm5170 | |
| atvtrack | ATV Track (set 1) | 2002 | Gaelco | | | |
| atvtracka | ATV Track (set 2) | 2002 | Gaelco | atvtrack | atvtrack | |
| atworld | Around The World (Version 1.4R CGA) | 2007 | Amcoe | | | |
| atworldd1 | Around The World (Version 1.3R CGA) | 2007 | Amcoe | atworld | atworld | |
| atworlde1 | Around The World (Version 1.3E CGA) | 2007 | Amcoe | atworld | atworld | |
| au | Au (location test) | 1983 | Tehkan | | | |
| aubam12s2 | BAM/12-S2 | 198? | AUVA COMPUTER, INC. | ibm5170 | ibm5170 | |
| audiowerk2 | Emagic Audiowerk2 Digital Audio Recording | | | | | |
| aurail | Aurail (set 3, US) (unprotected) | 1990 | Sega / Westone | | | |
| aurail1 | Aurail (set 2, World) (FD1089B 317-0168) | 1990 | Sega / Westone | aurail | aurail | |
| aurail1d | Aurail (set 2, World) (bootleg of FD1089B 317-0168 set) | 1990 | bootleg | aurail | aurail | |
| aurailj | Aurail (set 1, Japan) (FD1089A 317-0167) | 1990 | Sega / Westone | aurail | aurail | |
| aurailjd | Aurail (set 1, Japan) (bootleg of FD1089A 317-0167 set) | 1990 | bootleg | aurail | aurail | |
| ausfache | Akatsuki Blitzkampf Ausf. Achse (Japan) | 2008 | Subtle Style | naomi | | |
| auslalom | Autoslalom | 1990 | Elektronika | | | |
| aussieby | Aussie Byte II | 1984 | SME Systems | | | |
| aust201 | Austin Powers (CPU 2.01, display A2.00) | 2001 | Stern | austin | austin | genpin |
| aust300 | Austin Powers (CPU 3.00, display A3.00) | 2001 | Stern | austin | austin | genpin |
| aust301 | Austin Powers (CPU 3.01, display A3.00) | 2001 | Stern | austin | austin | genpin |
| austin | Austin Powers (CPU 3.02, display A3.00) | 2001 | Stern | | | genpin |
| austinf | Austin Powers (CPU 3.02, display F3.00, France) | 2001 | Stern | austin | austin | genpin |
| austing | Austin Powers (CPU 3.02, display G3.00, Germany) | 2001 | Stern | austin | austin | genpin |
| austini | Austin Powers (CPU 3.02, display I3.00, Italy) | 2001 | Stern | austin | austin | genpin |
| austnew | Austin Powers (CPU 3.02, display A3.00, ARM7 sound board) | 2001 | Stern | austin | austin | genpin |
| autmoon | Autumn Moon (1VXFC5488, New Zealand) | 1999 | Aristocrat | | | 3bagflvt |
| autoc15 | Autocue 1500 Teleprompter | 1988 | Autocue Ltd. | bbcmc | bbcmc | bbc |
| automat | Automat (bootleg of Robocop) | 1988 | bootleg | robocop | robocop | |
| automatm | Automat (bootleg of Robocop, Modular System) | 199? | bootleg (Gaelco / Ervisa) | robocop | robocop | |
| autopapa | El auto feo | 199? | Gaelco | | | |
| autorace | Auto Race | 1976 | Mattel Electronics | | | |
| auvip800 | VIP 800 | 198? | AUVA | ibm5150 | ibm5150 | |
| av2mj1bb | AV2Mahjong No.1 Bay Bridge no Seijo (Japan) | 1991 | Miki Syouji / AV Japan | | | |
| av2mj2rg | AV2Mahjong No.2 Rouge no Kaori (Japan) | 1991 | Miki Syouji / AV Japan | | | |
| avalnc12 | The Key Of Avalon 1.2 - Summon The New Monsters (client, Rev A) (GDT-0010A) | 2004 | Sega / Hitmaker | avalnc13 | avalnc13 | |
| avalnc13 | The Key Of Avalon 1.3 - Chaotic Sabbat (client, Rev C) (GDT-0010C) | 2004 | Sega / Hitmaker | triforce | | |
| avalnc25 | The Key Of Avalon 2.5 - War of the Key (client, Rev B) (GDT-0019B) | 2005 | Sega / Hitmaker | triforce | | |
| avalnc25a | The Key Of Avalon 2.5 - War of the Key (client, Rev A) (GDT-0019A) | 2005 | Sega / Hitmaker | avalnc25 | avalnc25 | |
| avalnche | Avalanche | 1978 | Atari | | | |
| avalns12 | The Key Of Avalon 1.2 - Summon The New Monsters (server, Rev A) (GDT-0009A) | 2004 | Sega / Hitmaker | avalns13 | avalns13 | |
| avalns13 | The Key Of Avalon 1.3 - Chaotic Sabbat (server, Rev C) (GDT-0009C) | 2004 | Sega / Hitmaker | triforce | | |
| avalns25 | The Key Of Avalon 2.5 - War of the Key (server, Rev B) (GDT-0018B) | 2005 | Sega / Hitmaker | triforce | | |
| avalns25a | The Key Of Avalon 2.5 - War of the Key (server, Rev A) (GDT-0018A) | 2005 | Sega / Hitmaker | avalns25 | avalns25 | |
| avalon20 | The Key Of Avalon 2.0 - Eutaxy and Commandment (client, Rev B) (GDT-0017B) | 2004 | Sega / Hitmaker | triforce | | |
| avalonc | The Key Of Avalon - The Wizard Master (client, Rev G) (GDT-0006G) | 2003 | Sega / Hitmaker | triforce | | |
| avalonca | The Key Of Avalon - The Wizard Master (client, Rev A) (GDT-0006A) | 2003 | Sega / Hitmaker | avalonc | avalonc | |
| avaloncc | The Key Of Avalon - The Wizard Master (client, Rev C) (GDT-0006C) | 2003 | Sega / Hitmaker | avalonc | avalonc | |
| avalonce | The Key Of Avalon - The Wizard Master (client, Rev E) (GDT-0006E) | 2003 | Sega / Hitmaker | avalonc | avalonc | |
| avaloncf | The Key Of Avalon - The Wizard Master (client, Rev F) (GDT-0006F) | 2003 | Sega / Hitmaker | avalonc | avalonc | |
| avalons | The Key Of Avalon - The Wizard Master (server, Rev G) (GDT-0005G) | 2003 | Sega / Hitmaker | triforce | | |
| avalonsa | The Key Of Avalon - The Wizard Master (server, Rev A) (GDT-0005A) | 2003 | Sega / Hitmaker | avalons | avalons | |
| avalonsc | The Key Of Avalon - The Wizard Master (server, Rev C) (GDT-0005C) | 2003 | Sega / Hitmaker | avalons | avalons | |
| avalonse | The Key Of Avalon - The Wizard Master (server, Rev E) (GDT-0005E) | 2003 | Sega / Hitmaker | avalons | avalons | |
| avalonsf | The Key Of Avalon - The Wizard Master (server, Rev F) (GDT-0005F) | 2003 | Sega / Hitmaker | avalons | avalons | |
| avcc | Advanced Voice Chess Challenger | 1980 | Fidelity Electronics | vcc | vcc | |
| avefenix | Ave Fenix (Electrogame, Spanish bootleg of Phoenix) | 1980 | bootleg (Video Game) | phoenix | phoenix | |
| avefenixl | Ave Fenix (Laguna, Spanish bootleg of Phoenix) | 1980 | bootleg (Laguna) | phoenix | phoenix | |
| avefenixrf | Ave Fenix (Recreativos Franco, Spanish bootleg of Phoenix) | 1980 | bootleg (Recreativos Franco S.A.) | phoenix | phoenix | |
| avenger | Avenger | 1975 | Electra | | | |
| avengers | Avengers (US, rev. D) | 1987 | Capcom | | | |
| avengersa | Avengers (US, rev. C) | 1987 | Capcom | avengers | avengers | |
| avengersb | Avengers (US, rev. A) | 1987 | Capcom | avengers | avengers | |
| avengersc | Avengers (US) | 1987 | Capcom | avengers | avengers | |
| avengrgs | Avengers In Galactic Storm (US/Europe 1.0) | 1995 | Data East Corporation | | | |
| avengrgsj | Avengers In Galactic Storm (Japan 1.2) | 1995 | Data East Corporation | avengrgs | avengrgs | |
| avg | Atari AVG | | | | | |
| avg_bzone | Atari AVG (Battle Zone) | | | | | |
| avg_mhavoc | Atari AVG (Major Havoc) | | | | | |
| avg_quantum | Atari AVG (Quantum) | | | | | |
| avg_starwars | Atari AVG (Star Wars) | | | | | |
| avg_tempest | Atari AVG (Tempest) | | | | | |
| avigo | TI Avigo 10 PDA | 1997 | Texas Instruments | | | |
| avigo_de | TI Avigo 10 PDA (German) | 1997 | Texas Instruments | avigo | avigo | |
| avigo_es | TI Avigo 10 PDA (Spanish) | 1997 | Texas Instruments | avigo | avigo | |
| avigo_fr | TI Avigo 10 PDA (French) | 1997 | Texas Instruments | avigo | avigo | |
| avigo_it | TI Avigo 10 PDA (Italian) | 1997 | Texas Instruments | avigo | avigo | |
| aviion_4600 | AViiON 4600 | 1991 | Data General | | | |
| avivideo_image | AVI Video Image | | | | | |
| avrmax | AVR-Max Chess Computer (English) | 2009 | Elektor | | | |
| avrmaxg | AVR-Max-Schachzwerg (German) | 2009 | Elektor | avrmax | avrmax | |
| avsp | Alien vs. Predator (Europe 940520) | 1994 | Capcom | | | |
| avspa | Alien vs. Predator (Asia 940520) | 1994 | Capcom | avsp | avsp | |
| avspd | Alien vs. Predator (Europe 940520 Phoenix Edition) (bootleg) | 1994 | bootleg | avsp | avsp | |
| avsph | Alien vs. Predator (Hispanic 940520) | 1994 | Capcom | avsp | avsp | |
| avspirit | Avenging Spirit | 1991 | Jaleco | | | |
| avspj | Alien vs. Predator (Japan 940520) | 1994 | Capcom | avsp | avsp | |
| avspu | Alien vs. Predator (USA 940520) | 1994 | Capcom | avsp | avsp | |
| avtbingo | Arrow Bingo | 1985 | Advanced Video Technology | | | |
| avtnfl | NFL (ver 109) | 1989 | Advanced Video Technology | | | |
| avtsym14 | Symbols (ver 1.4) | 1985 | Advanced Video Technology | | | |
| avtsym25 | Symbols (ver 2.5) | 1985 | Advanced Video Technology | avtsym14 | avtsym14 | |
| aw_rom_board | Sammy Atomiswave ROM Board | | | | | |
| awacs | AWACS | | | | | |
| awacsmr | AWACS MacRisc audio I/O | | | | | |
| awbios | Atomiswave BIOS | 2001 | Sammy | | | |
| awetoss | Awesome Toss 'Em (Lazer-Tron) | 19?? | Lazer-Tron | | | |
| ax145 | AX-145 | 198? | Brother | | | |
| ax150 | AX-150 (MSX1, Arabic) | 1986 | Sakhr | | | |
| ax170 | AX-170 (MSX1, Arabic) | 1986 | Sakhr | | | |
| ax20 | AX-20 | 1982 | Axel | | | |
| ax200 | AX-200 (MSX1, Arabic/English) | 1986 | Sakhr | | | |
| ax200m | AX-200M (MSX1, Arabic/English) | 1986 | Sakhr | ax200 | ax200 | |
| ax208 | AppoTech AX208 (AXC51-CORE) | | | | | |
| ax208p | AppoTech AX208 (AXC51-CORE) (prototype?) | | | | | |
| ax230 | AX-230 (MSX1, Arabic) | 1986 | Sakhr | | | |
| ax350 | AX-350 (MSX2, Arabic) | 1987 | Sakhr | ax350ii | ax350ii | |
| ax350ii | AX-350 II (MSX2, Arabic) | 1987 | Sakhr | | | |
| ax350iif | AX-350 II F (MSX2, Arabic) | 1987 | Sakhr | ax350ii | ax350ii | |
| ax370 | AX-370 (MSX2, Arabic) | 1988 | Sakhr | | | |
| ax500 | AX-500 (MSX2, Arabic) | 1987 | Sakhr | | | |
| ax80 | AX80 | 1984 | Akai | | | |
| ay | AY card | | | | | |
| ay31015 | AY-3-1015 UART | | | | | |
| ay3600 | AY-5-3600 Keyboard Encoder | | | | | |
| ay51013 | AY-5-1013 UART | | | | | |
| ay8910 | AY-3-8910A PSG | | | | | |
| ay8912 | AY-3-8912A PSG | | | | | |
| ay8913 | AY-3-8913 PSG | | | | | |