| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| nagano98 | Nagano Winter Olympics '98 (GX720 EAA) | 1998 | Konami | konamigv | | |
| naganoj | Hyper Olympic in Nagano (GX720 JAA) | 1998 | Konami | nagano98 | nagano98 | |
| naltair | Altair (Nauchpribor) | 1991 | bootleg (Nauchpribor) | gnw_mmouse | gnw_mmouse | |
| nam1975 | NAM-1975 (NGM-001 ~ NGH-001) | 1990 | SNK | neogeo | | |
| namco | Namco | | | | | |
| namco_05xx_starfield | Namco 05xx Starfield | | | | | |
| namco_15xx | Namco 15xx | | | | | |
| namco_163_sound | Namco 163 (Sound) | | | | | |
| namco_63701x | Namco 63701X | | | | | |
| namco_amc | Namco AMC PCB (Extra I/O,JPN,Ver1.10) | | | | | |
| namco_asca1 | Namco ASCA-1 (Multipurpose I/O,JPN,Ver2.00) | | | | | |
| namco_asca3 | Namco ASCA-3 (Multipurpose + Rotary Encoder,JPN,Ver2.04) | | | | | |
| namco_asca3a | Namco ASCA-3 (Multipurpose + Rotary Encoder,JPN,Ver2.02) | | | | | |
| namco_asca5 | Namco ASCA-5 (Multipurpose,JPN,Ver2.09) | | | | | |
| namco_c116 | Namco C116 Video Controller | | | | | |
| namco_c117 | Namco C117 MMU | | | | | |
| namco_c123tmap | Namco C123 (4x + 2x Tilemaps) | | | | | |
| namco_c139 | Namco C139 Serial | | | | | |
| namco_c148 | Namco C148 Interrupt Controller | | | | | |
| namco_c169roz | Namco C169 (ROZ) | | | | | |
| namco_c355spr | Namco 186/187 or C355/187 (sprites) | | | | | |
| namco_c45_road | Namco C45 Road | | | | | |
| namco_c77 | Namco C77 | | | | | |
| namco_csz1 | Namco CSZ1 MIU-I/O (GUN-EXTENTION,JPN,Ver2.05) | | | | | |
| namco_cus30 | Namco CUS30 | | | | | |
| namco_cus4xtmap | Namco CUS42 + CUS43 (dual tilemaps) | | | | | |
| namco_cyberlead | Namco Cyber Lead I/O LED(I/O) PCB 8699014200 (compatibility patch) | | | | | |
| namco_cyberlead_led | Namco Cyber Lead I/O LED(LED) PCB 8699014500 | | | | | |
| namco_cyberleada | Namco Cyber Lead I/O LED(I/O) PCB 8699014200 | | | | | |
| namco_de_pcb | Namco Driver's Eyes PCB stack | | | | | |
| namco_emio102 | Namco EM I/O1-02 (Techno-Drive I/O,JPN&EXP,Ver2.00) | | | | | |
| namco_empri101 | Namco EM Pri1-01 | | | | | |
| namco_fca10 | Namco FCA-1 (Multipurpose + Rotary Encoder,JPN,Ver1.00) | | | | | |
| namco_fca11 | Namco FCA-1 (Multipurpose + Rotary Encoder,JPN,Ver1.01) | | | | | |
| namco_fcb | Namco FCB (TouchPanel&Multipurpose,JPN,Ver1.02) | | | | | |
| namco_settings | Namco Settings | | | | | |
| namco_tssio | Namco TSS-I/O (GUN-EXTENTION,JPN,Ver2.02) | | | | | |
| namco_xmiu1 | Namco XMIU1 TSS-I/O (GUN-EXTENTION,JPN,Ver2.11,Ver2.12) | | | | | |
| namco06 | Namco 06xx | | | | | |
| namco50 | Namco 50xx | | | | | |
| namco51 | Namco 51xx | | | | | |
| namco52 | Namco 52xx | | | | | |
| namco53 | Namco 53xx | | | | | |
| namco54 | Namco 54xx | | | | | |
| namco56 | Namco 56xx I/O | | | | | |
| namco58 | Namco 58xx I/O | | | | | |
| namco59 | Namco 59xx I/O | | | | | |
| namco62 | Namco 62xx | | | | | |
| namcoc65 | Namco C65 I/O | | | | | |
| namcoc67 | Namco C67 (TMS320C25) | | | | | |
| namcoc68 | Namco C68 I/O | | | | | |
| namcoc69 | Namco C69 (M37702) | | | | | |
| namcoc70 | Namco C70 (M37702) | | | | | |
| namcoc71 | Namco C71 (TMS320C25) | | | | | |
| namcoc74 | Namco C74 (M37702) | | | | | |
| namcoc75 | Namco C75 (M37702) | | | | | |
| namcoc76 | Namco C76 (M37702) | | | | | |
| namcoio_gearbox | Namco I/O Gearbox | | | | | |
| namcons1 | Let's! TV Play Classic - Namco Nostalgia 1 (Japan) | 2006 | Bandai / SSD Company LTD / Namco | | | |
| namcons2 | Let's! TV Play Classic - Namco Nostalgia 2 (Japan) | 2006 | Bandai / SSD Company LTD / Namco | | | |
| namcos10_exio | Namco System 10 EXIO | | | | | |
| namcos10_exio_g | Namco System 10 EXIO(G) | | | | | |
| namcos10_mgexio | Namco System 10 MGEXIO | | | | | |
| namcos12_cdxa | Namco System 12 CDXA PCB | | | | | |
| namcos2_roz | Namco System 2 ROZ (C102) | | | | | |
| namcos2_sprite | Namco System 2 Sprites (C106,C134,C135,C146) | | | | | |
| namcos2_sprite_finallap | Namco System 2 Sprites (C106,C134,C135,C146) (Final Lap) | | | | | |
| namcos2_sprite_metalhawk | Namco System 2 Sprites (C106,C134,C135,C146) (Metal Hawk) | | | | | |
| namcos21_3d | Namco System 21 3D Rasterizer | | | | | |
| namcos21_dsp_c67_device | Namco System 21 DSP Setup (5x C67 type) | | | | | |
| namcos21_dsp_device | Namco System 21 DSP Setup (1x TMS320C25 type) | | | | | |
| namcostr | Namco Stars | 2000 | Namco | | | |
| nameclub | Name Club (J 960315 V1.000) | 1996 | Sega | stvbios | | |
| namenayo | Namennayo (Japan) | 1982 | Cat's | | | |
| nametune | Name That Tune (Bally, 3/31/86) | 1986 | Bally/Sente | | | |
| nametunea | Name That Tune (Bally, 3/23/86) | 1986 | Bally/Sente | nametune | nametune | |
| naname | Naname de Magic! (Japan) | 1994 | Atlus | | | |
| nand | NAND Flash Memory | | | | | |
| nano | OSCOM Nano | 1980 | OSCOM Oy | tmc2000 | tmc2000 | |
| nanoprocessor | Hewlett Packard HP-Nanoprocessor | | | | | |
| nanoreseau_mo | Nanoreseau controller (MO rom) | | | | | |
| nanoreseau_to | Nanoreseau controller (TO rom) | | | | | |
| nanos | NANOS | 1985 | Ingenieurhochschule fur Seefahrt Warnemunde/Wustrow | | | |
| naomi | NAOMI BIOS | 1998 | Sega | | | |
| naomi_m1_board | Sega NAOMI M1 Board | | | | | |
| naomi_m2_board | Sega NAOMI M2 Board | | | | | |
| naomi_m4_board | Sega NAOMI M4 Board | | | | | |
| naomi_rom_board | Sega NAOMI ROM Board | | | | | |
| naomi2 | NAOMI 2 BIOS | 2001 | Sega | | | |
| naomigd | NAOMI GD-ROM BIOS | 2001 | Sega | | | |
| narc | Narc (rev 7.00) | 1988 | Williams | | | |
| narc1 | Narc (rev 1.80) | 1988 | Williams | narc | narc | |
| narc2 | Narc (rev 2.00) | 1988 | Williams | narc | narc | |
| narc3 | Narc (rev 3.20) | 1988 | Williams | narc | narc | |
| narc4 | Narc (rev 4.00) | 1988 | Williams | narc | narc | |
| narc6 | Narc (rev 6.00) | 1988 | Williams | narc | narc | |
| nasbus | NASBUS Backplane | | | | | |
| nasbus_slot | NASBUS Slot | | | | | |
| nascar | Nascar (CPU 4.50, display A4.00) | 2005 | Stern | | | genpin |
| nascar_301 | Nascar (CPU 3.01, display A3.01) | 2005 | Stern | nascar | nascar | genpin |
| nascar_340 | Nascar (CPU 3.40, display A3.03) | 2005 | Stern | nascar | nascar | genpin |
| nascar_350 | Nascar (CPU 3.50, display A3.03) | 2005 | Stern | nascar | nascar | genpin |
| nascar_352 | Nascar (CPU 3.52, display A3.03) | 2005 | Stern | nascar | nascar | genpin |
| nascar_400 | Nascar (CPU 4.00, display A4.00) | 2005 | Stern | nascar | nascar | genpin |
| nascarl | Nascar (CPU 4.50, display L4.00, Spain) | 2005 | Stern | nascar | nascar | genpin |
| nascarl_301 | Nascar (CPU 3.01, display L3.01, Spain) | 2005 | Stern | nascar | nascar | genpin |
| nascarl_340 | Nascar (CPU 3.40, display L3.03, Spain) | 2005 | Stern | nascar | nascar | genpin |
| nascarl_350 | Nascar (CPU 3.50, display L3.03, Spain) | 2005 | Stern | nascar | nascar | genpin |
| nascarl_352 | Nascar (CPU 3.52, display L3.03, Spain) | 2005 | Stern | nascar | nascar | genpin |
| nascarl_400 | Nascar (CPU 4.00, display L4.00, Spain) | 2005 | Stern | nascar | nascar | genpin |
| nascom_avc | Nascom Advanced Video Card | | | | | |
| nascom_fdc | Nascom Floppy Disc Controller | | | | | |
| nascom1 | Nascom 1 | 1978 | Nascom Microcomputers | | | |
| nascom2 | Nascom 2 | 1979 | Nascom Microcomputers | | | |
| nascom2c | Nascom 2 (CP/M) | 1980 | Nascom Microcomputers | nascom2 | nascom2 | |
| nastar | Nastar (World) | 1988 | Taito Corporation Japan | | | |
| nastarw | Nastar Warrior (US) | 1988 | Taito America Corporation | nastar | nastar | |
| nat48pv | NAT48PV-1.00 VL | 199? | <unknown> | ibm5170 | ibm5170 | |
| natodef | NATO Defense | 1982 | Pacific Novelty | | | natodef |
| natodefa | NATO Defense (alternate mazes) | 1982 | Pacific Novelty | natodef | natodef | natodef |
| natsuiro | Natsuiro Mahjong (Japan) | 1989 | Video System Co. | mjnatsu | mjnatsu | |
| naughtyb | Naughty Boy | 1982 | Jaleco | | | |
| naughtyb_sound | Naughty Boy Custom Sound | | | | | |
| naughtyba | Naughty Boy (bootleg, set 1) | 1982 | bootleg | naughtyb | naughtyb | |
| naughtybb | Naughty Boy (bootleg, set 2) | 1982 | bootleg | naughtyb | naughtyb | |
| naughtybc | Naughty Boy (Cinematronics) | 1982 | Jaleco (Cinematronics license) | naughtyb | naughtyb | |
| nautilus | Nautilus | 1984 | Playmatic | | | genpin |
| navarone | Navarone | 1980 | Namco | | | |
| nb_aenet | Apple NuBus Ethernet card | | | | | |
| nb_amc3b | Asante MC3NB Ethernet card | | | | | |
| nb_btbug | Brigent BootBug debugger card | | | | | |
| nb_c264 | RasterOps ColorBoard 264 video card | | | | | |
| nb_image | NuBus Disk Image Pseudo-Card | | | | | |
| nb_laserview | Sigma Designs LaserView video card | | | | | |
| nb_m2hr | Apple Macintosh II High Resolution Video Card | | | | | |
| nb_m2vc | Apple Macintosh II Video Card | | | | | |
| nb_mdc48 | Apple Macintosh Display Card 4/8 (MDC 1.0.1) | | | | | |
| nb_mdc824 | Apple Macintosh Display Card 8/24 (MDC 1.2) | | | | | |
| nb_pcs8 | Lapis ProColor Server 8 | | | | | |
| nb_qdlink | Applied Engineering Quadralink serial card | | | | | |
| nb_rtpd | Radius Two Page Display video card | | | | | |
| nb_sp8s3 | SuperMac Spectrum/8 Series III video card | | | | | |
| nb_spdq | SuperMac Spectrum PDQ video card | | | | | |
| nb_thungx | Radius Thunder IV GX video card | | | | | |
| nb_thungx16 | Radius Thunder IV GX 1600 video card | | | | | |
| nb_vikbw | Moniterm MacViking II video card | | | | | |
| nb_wkstn | Macintosh II Workstation Video Card | | | | | |
| nb_wspt | Macintosh II Portrait Video Card | | | | | |
| nb1412m2 | NB1412M2 Mahjong Custom | | | | | |
| nb1413m3 | NB1413 Mahjong Custom | | | | | |
| nb1414m4 | NB1414M4 Custom | | | | | |
| nba_500 | NBA v5.00 | 2009 | Stern | nba_802 | nba_802 | |
| nba_600 | NBA v6.00 | 2009 | Stern | nba_802 | nba_802 | |
| nba_700 | NBA v7.00 | 2009 | Stern | nba_802 | nba_802 | |
| nba_801 | NBA v8.01 | 2009 | Stern | nba_802 | nba_802 | |
| nba_802 | NBA v8.02 | 2009 | Stern | | | |
| nbaatw | NBA All The Way (ver EAB) | 1998 | Konami | nbapbp | nbapbp | |
| nbaatwa | NBA All The Way (ver EAA) | 1998 | Konami | nbapbp | nbapbp | |
| nbaf_11 | NBA Fastbreak (1.1) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_115 | NBA Fastbreak (1.15) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_11a | NBA Fastbreak (1.1 - S2.0) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_11s | NBA Fastbreak (1.1 - S0.4) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_21 | NBA Fastbreak (2.1) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_22 | NBA Fastbreak (2.2) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_23 | NBA Fastbreak (2.3) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbaf_31 | NBA Fastbreak (3.1 - S3.0) | 1997 | Bally | | | |
| nbaf_31a | NBA Fastbreak (3.1 - S1.0) | 1997 | Bally | nbaf_31 | nbaf_31 | |
| nbagold | SportStation: NBA Showtime NBA on NBC Gold Edition (ver 3.0, Feb 18 2000) / NFL Blitz 2000 Gold Edition | 2000 | Midway Games | | | |
| nbahangt | NBA Hangtime (ver L1.3 10/10/96) | 1996 | Midway | | | |
| nbahangtl11 | NBA Hangtime (ver L1.1 4/16/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbahangtl12 | NBA Hangtime (ver L1.2 8/29/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbahangtm11 | NBA Hangtime (ver M1.1 4/16/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbahangtm12 | NBA Hangtime (ver M1.2 8/29/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbahangtm13 | NBA Hangtime (ver M1.3 10/10/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbajam | NBA Jam (rev 3.01 4/07/93) | 1993 | Midway | | | |
| nbajamex | NBA Jam Extreme (ver. 1.10I) | 1996 | Acclaim | coh1000a | | |
| nbajamexa | NBA Jam Extreme (ver. 1.04) | 1996 | Acclaim | nbajamex | nbajamex | |
| nbajamp1 | NBA Jam (proto v 1.01 1/23/93) | 1993 | Midway | nbajam | nbajam | |
| nbajamp2 | NBA Jam (proto v 2.00 1/24/93) | 1993 | Midway | nbajam | nbajam | |
| nbajamr1 | NBA Jam (rev 1.00 2/1/93) | 1993 | Midway | nbajam | nbajam | |
| nbajamr2 | NBA Jam (rev 2.00 2/10/93) | 1993 | Midway | nbajam | nbajam | |
| nbajamte | NBA Jam Tournament Edition (rev 4.0 3/23/94) | 1994 | Midway | | | |
| nbajamte1 | NBA Jam Tournament Edition (rev 1.00 1/17/94) | 1994 | Midway | nbajamte | nbajamte | |
| nbajamte2 | NBA Jam Tournament Edition (rev 2.1 2/06/94) | 1994 | Midway | nbajamte | nbajamte | |
| nbajamte2a | NBA Jam Tournament Edition (rev 2.0 1/28/94) | 1994 | Midway | nbajamte | nbajamte | |
| nbajamte3 | NBA Jam Tournament Edition (rev 3.0 3/04/94) | 1994 | Midway | nbajamte | nbajamte | |
| nbajamte3a | NBA Jam Tournament Edition (rev 3.0 2/26/94) | 1994 | Midway | nbajamte | nbajamte | |
| nbajamte4 | NBA Jam Tournament Edition (rev 4.0 3/03/94) | 1994 | Midway | nbajamte | nbajamte | |
| nbajamten | NBA Jam Tournament Edition (Nani Edition, rev 5.2 8/11/95, prototype) | 1995 | Midway | nbajamte | nbajamte | |
| nbajamtep2 | NBA Jam Tournament Edition (proto 2.00 12/17/93) | 1993 | Midway | nbajamte | nbajamte | |
| nbamac | NBA MAC | 1996 | MAC S.A. | | | genpin |
| nbamht | NBA Maximum Hangtime (ver L1.03 06/09/97) | 1996 | Midway | nbahangt | nbahangt | |
| nbamhtl10 | NBA Maximum Hangtime (ver L1.0 11/08/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbamhtm10 | NBA Maximum Hangtime (ver M1.0 11/08/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbamhtp | NBA Maximum Hangtime (ver L0.9 10/30/96) | 1996 | Midway | nbahangt | nbahangt | |
| nbanfl | SportStation: NBA Showtime NBA on NBC (ver 2.1, Sep 22 1999) / NFL Blitz 2000 Gold Edition (ver 1.5, Sep 22 1999) | 1999 | Midway Games | | | |
| nbapbp | NBA Play By Play (ver UAB) | 1998 | Konami | | | |
| nbapbpa | NBA Play By Play (ver AAB) | 1998 | Konami | nbapbp | nbapbp | |
| nbapbpaa | NBA Play By Play (ver AAA) | 1998 | Konami | nbapbp | nbapbp | |
| nbapbpj | NBA Play By Play (ver JAB) | 1998 | Konami | nbapbp | nbapbp | |
| nbapbpja | NBA Play By Play (ver JAA) | 1998 | Konami | nbapbp | nbapbp | |
| nbapbpua | NBA Play By Play (ver UAA) | 1998 | Konami | nbapbp | nbapbp | |
| nbashowt | NBA Showtime NBA on NBC (ver 2.0, Apr 25 1999) | 1999 | Midway Games | | | |
| nbbatman | Ninja Baseball Bat Man (World) | 1993 | Irem | | | |
| nbbatman2bl | Ninja Baseball Bat Man II (bootleg) | 1993 | bootleg | nbbatman | nbbatman | |
| nbbatmanu | Ninja Baseball Bat Man (US) | 1993 | Irem America | nbbatman | nbbatman | |
| nc100 | NC100 | 1992 | Amstrad plc | | | |
| nc100de | NC100 (Germany) | 1992 | Amstrad plc | nc100 | nc100 | |
| nc100dk | NC100 (Denmark) | 1992 | Amstrad plc | nc100 | nc100 | |
| nc100sv | NC100 (Sweden) | 1992 | Amstrad plc | nc100 | nc100 | |
| nc150fr | NC150 (France) | 1992 | Amstrad plc | nc100 | nc100 | |
| nc150it | NC150 (Italy) | 1992 | Amstrad plc | nc100 | nc100 | |
| nc200 | NC200 | 1993 | Amstrad plc | | | |
| nc96 | New Cherry '96 Special Edition (v3.63, C1 PCB) | 1996 | Amcoe | | | |
| nc96a | New Cherry '96 Special Edition (v3.62, C1 PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96b | New Cherry '96 Special Edition (v3.61, C1 PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96c | New Cherry '96 Special Edition (v3.54, D PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96d | New Cherry '96 Special Edition (v3.53, D PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96e | New Cherry '96 Special Edition (v3.40, D PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96f | New Cherry '96 Special Edition (v3.62, DK PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96g | New Cherry '96 (v3.1, B PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96h | New Cherry '96 (v3.1C, G PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96i | New Cherry '96 Special Edition (v3.55, C1 PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96j | New Cherry '96 Special Edition (v3.61, DK PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96k | New Cherry '96 Special Edition (v3.51, D PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96l | New Cherry '96 (v3.0, A PCB) | 1996 | Amcoe | nc96 | nc96 | |
| nc96txt | New Cherry '96 Special Edition (v1.32 Texas XT, C2 PCB) | 2000 | Amcoe | nc96 | nc96 | |
| ncarrera | New Carrera - Version 2000 | 2001 | bootleg (J.T.) | | | |
| ncb3 | Cherry Bonus III (ver.1.40, set 1) | 199? | Dyna | | | |
| ncd_bert_asic | NCD BERT ASIC | | | | | |
| ncd16 | NCD 16 | 1989 | Network Computing Devices | | | |
| ncd17c | NCD 17C | 1990 | Network Computing Devices | | | |
| ncd19 | NCD 19 | 1990 | Network Computing Devices | | | |
| ncd19c | 19c | 1991 | Network Computing Devices | | | |
| ncdmcx | MCX | 1993 | Network Computing Devices | | | |
| ncentury | New Century (Spanish bootleg of Scramble) | 1981 | bootleg (Petaco S.A.) | scramble | scramble | |
| nclock | Nippel Clock | | | | | |
| nclubdis | Name Club Disney (J 980614 V1.000) | 1998 | Sega | stvbios | | |
| nclubv2 | Name Club Ver.2 (J 960315 V1.000) | 1996 | Sega | stvbios | | |
| nclubv3 | Name Club Ver.3 (J 970723 V1.000) | 1997 | Sega | stvbios | | |
| nclubv4 | Name Club Ver.4 (J 971202 V1.000) | 1997 | Sega | stvbios | | |
| ncombat | Ninja Combat (NGM-009) | 1990 | Alpha Denshi Co. | neogeo | | |
| ncombath | Ninja Combat (NGH-009) | 1990 | Alpha Denshi Co. | ncombat | ncombat | |
| ncommand | Ninja Commando | 1992 | Alpha Denshi Co. | neogeo | | |
| ncr3302 | Class 3302 Model 0110 | 199? | NCR | ibm5170 | ibm5170 | |
| ncr3433 | Class 3433 | 199? | NCR | ibm5170 | ibm5170 | |
| ncr537xx | NCR 53C7xx SCSI | | | | | |
| ncr5380 | NCR 5380 SCSI | | | | | |
| ncr5385 | NCR 5385 SCSI Protocol Controller | | | | | |
| ncr53c80 | NCR 53C80 SCSI | | | | | |