32-бітний комп'ютер на M68K
32-бітний комп'ютер на Motorola 68000 від Kabushiki Gaisha Sega (かぶしきがいしゃせが), компанією, яка створила найбільшу кількість аркадних автоматів, під назвою Genesis або Mega Drive стимулював Nintendo до конкуренції і випуску SNES через 2 роки, а також сформував основу для залучення старшої цільової аудиторії.
Ревізії PCB
| VA0 | Model 1, Japan. |
|---|---|
| VA1 | Model 1, Japan. |
| VA2 | Model 1, USA, High Definition Graphics. |
| VA3 | Model 1, USA, High Definition Graphics. |
| VA4 | Model 1, USA. |
| VA5 | Model 1, Japan. |
| VA6 | Model 1, Japan. |
| VA6 | Model 1, USA, High Definition Graphics. |
| VA6.5 | Model 1, PAL. |
| VA8 | Model 1. |
| VA7 | Model 1, USA. |
| VA0 | Model 2, USA, Japan, PAL. |
| VA1 | Model 2, USA, PAL. |
| VA1.8 | Model 2, USA SKS, USA CMK, PAL, Asia. |
| VA2 | Model 2, USA. |
| VA3 | Model 2. |
| VA4 | Model 2. |
| VA1 | Model 3, USA. |
| VA2 | Model 3, USA. |
Специфікація
| Процесор головний: | Motorola 68000 IC54. 7.61 MHz in PAL consoles, 7.67 MHz in NTSC consoles. 24‑bit address bus. 68000 internal bus: 30.681812 MB/s (NTSC, 32-bit, 7.670454 MHz), 30.401956 MB/s (PAL, 32-bit, 7.600489 MHz). |
|---|---|
| Процесор додатковий: | Z80 IC56. Runs at 3.55 MHz in PAL consoles, 3.58 MHz in NTSC consoles. Для емуляції Sega Master System. Z80 internal bus: 3.579545 MB/s (NTSC), 3.546894 MB/s (PAL). |
| Пам'ять ROM: | 2KB. Trademark Security System (TMSS). |
| Пам'ять SRAM: | TC51832PL-12 64KB, IC55, IC43. CPU access: 3.800245–5 MHz (200–263 ns). 6‑bit (2x 8‑bit), PSRAM, 5.263157 MHz (190 ns). |
| Пам'ять VDP DRAM: | MB81461, IC59, IC60. 64 KB. SAM buffer cache: 256 bytes VDP internal RAM cache: 26.846588 MB/s (NTSC, 16-bit, 13.423294 MHz), 26.601712 MB/s (PAL, 16-bit, 13.300856 MHz), Performance: 13.423294 MHz (NTSC, 74 ns), 13.300856 MHz (PAL, 75 ns). FPM DRAM: 2048-bit internal (8x 256-bit arrays), 8-bit external (2x 4‑bit), 8.333333 MHz (120 ns), 8 MHz (125 ns, when reading SAM). SAM buffer cache: 8-bit (2x 4‑bit), 13.423294 MHz (NTSC, 74 ns), 13.300856 MHz (PAL, 75 ns), VDP reads continuous stream of video screen refresh data from SAM while reading/writing DRAM. VRAM: 8/16-bit Dual‑Port VRAM, 16-bit RAM/SAM, 8-bit RAM. VDP internal cache: 232 bytes ( CRAM (Color RAM) 72 bytes; VSRAM (Vertical Scrolling RAM) 80 bytes; Sprite cache 80 bytes). |
| Пам'ять Audio: | 8 KB. Performance: 8‑bit, SRAM/XRAM, 3.030303 MHz (330 ns). |
| Арбітр шини: | Bus Arbiter 315-5308, IC65. 16‑bit system bus — 68000 & VDP <‑> Main RAM & Cartridge ROM/RAM. 8‑bit system bus — Z80 & YM2612 <‑> Audio RAM. 8/16‑bit video bus — VDP <‑> VRAM. |
| Осцилятор: | Clock Generator 315-5345, IC61. |
| I/O контролер: | IO Controller 315-5309, IC66. |
| Графіка: | Sega 315‑5313 VDP (Yamaha YM7101) IC64. Progressive: NTSC: 320×224(40), 256×224(32); PAL: 320×224, 256×224, 320×240, 256×240. Interlaced: NTSC: 320×448, 256×448; PAL: 320×448, 256×448, 320×480, 256×480. Overscan: NTSC: 320×448, 256×448; PAL: 320×448, 256×448, 320×480, 256×480. Clock rate: 13.423294 MHz (NTSC), 13.300856 MHz (PAL). Pixel clock rate: 6.711647 MHz (NTSC), 6.650428 MHz (PAL). Refresh rate: 59.92274 Hz (NTSC), 49.701459 Hz (PAL). |
| Відео кодер: | Video Encoder Sony CXA1145. |
| Спрайти: | 80 on-screen 320x240 or 320x480 pixel mode or 64 256x240 pixel mode. |
| Скрол: | Width and height independently set to 32, 64, or 128 cells as VRAM allows. |
| Площини: | 4 (2 scrolling playfields, 1 sprite plane, 1 'window' plane), per-tile priority. |
| Палітра: | 512 colors (1536 using shadow/highlight mode). 64 × 9-bit words of color RAM, 4 lines of 15 colors plus transparent, allowing 61 on-screen colors (up to 183 via raster effects and shadow/highlight). |
| Звук: | A Yamaha YM2612 and a Texas Instruments SN76489. Audio Amplifier (CXA1034P). |
| Картріджі: | Cartridge memory: 512–8224 KB. ROM: 512 KB (4 Mbits) to 8 MB (64 Mbits). SRAM: 8 KB to 32 KB. Most cartridges: MROM, 5 MHz (200 ns). Some cartridges: MROM/EPROM, 7.670454 MHz (NTSC), 7.600489 MHz (PAL), 130–131 ns. Cartridge ROM bandwidth: 10 MB/s (most cartridges), 15.200978–15.340906 MB/s (some cartridges). |
Документація
Код
[1]. Sega Genesis Development Kit (SGDK) by Stephane Dallongeville.
Ігри
Перелік ігор відібраних Максимом Сохацьким для Sega Mega Drive.
| 001 | Aladdin (Disney) |
|---|---|
| 002 | Alien 3 |
| 003 | Alien Soldier |
| 004 | Animaniacs |
| 005 | Ariel Mermaid (Disney) |
| 006 | Asterix and the Great Rescue |
| 007 | Asterix and the Power of Gods |
| 008 | Bob |
| 009 | Ballz 3D |
| 010 | Barbie Super Model |
| 011 | Battle Squadron |
| 012 | Battle Tech - A Game of Armored Combat |
| 013 | Beauty and the Beast (Disney) |
| 014 | Bishoujo Senshi Sailor Moon |
| 015 | Blades of Vengeance |
| 016 | Blaster Master |
| 017 | Blockout |
| 018 | Blue Almanach |
| 019 | Bonkers (Disney) |
| 020 | Boogerman: A Pick and Flick Adventure |
| 021 | Bubba 'n' Stix |
| 022 | Bubble and Squak |
| 023 | Bubsy in: Claws Encounters of the Furred Kind |
| 024 | Bubsy II |
| 025 | Bags Bunny in Double Trouble |
| 026 | Castle of Illusion Starring Mickey Mouse (Disney) |
| 027 | Cool Spot |
| 028 | Chuck Rock |
| 029 | Daffy Duck in Hollywood |
| 030 | Dangerous Seed |
| 031 | Darwin 4081 |
| 032 | DecapAttack |
| 033 | Demolition Man |
| 034 | Desert Demolition |
| 035 | Desert Strike: Return to the Gulf |
| 036 | Dino Dini's Soccer |
| 037 | Donald in Malibu Mallard (Disney) |
| 038 | Doraemon: Yume Dorobou to 7-Jin no Gozans |
| 039 | Hyper Dunk |
| 040 | Dragon Slayer: Eiyuu Densetsu |
| 041 | Dragon Slayer: Eiyuu Densetsu II |
| 042 | Dune: The Battle for Arrakis |
| 043 | Dungeons & Dragons: Warriors of the Eternal |
| 044 | Dyna Brothers 2 |
| 045 | Earthworm Jim |
| 046 | Earthworm Jim 2 |
| 047 | Ecco the Dolphin |
| 048 | Ecco the Dolphin 2 |
| 049 | Eliminate Down |
| 050 | ExoSquad |
| 051 | F-15 Strike Eagle II |
| 052 | F-22 Interceptor |
| 053 | F-117 Night Storm |
| 054 | Fantasia (Disney) |
| 055 | Fantastic Dizzy |
| 056 | Flashback |
| 057 | The Flintstones |
| 058 | Gaiares |
| 059 | General Chaos |
| 060 | Golden Axe |
| 061 | Golden Axe II |
| 062 | Golden Axe III |
| 063 | Goofy's Hysterical History Tour (Disney) |
| 064 | The Great Circus Mystery Starring Mickey & Minnie (Disney) |
| 065 | Grind Stormer |
| 066 | Havoc |
| 067 | International Rugby |
| 068 | International Sensible Soccer - Limited Edition: World Champions |
| 069 | Izzy's Quest for the Olympic Rings |
| 070 | James Pond |
| 071 | James Pond II |
| 072 | James Pond III |
| 073 | Jimmy White's Whirlwind Snooker |
| 074 | The Jungle Book (Disney) |
| 075 | Jungle Strike |
| 076 | Jurassic Park |
| 077 | Jurassic Park: Rampage Edition |
| 078 | Justice League Task Force |
| 079 | Kishi Densetsu |
| 080 | Klax |
| 081 | Krusty's Super Fun House |
| 082 | Lemmings |
| 083 | Lemmings 2 |
| 084 | LHX Attack Helicopter |
| 085 | Thunder Force IV |
| 086 | The Lion King (Disney) |
| 087 | Magical * Taruruuto-kun |
| 088 | Marble Madness |
| 089 | Marko |
| 090 | Marsupilami |
| 091 | Marvel Land |
| 092 | Master of Weapon |
| 093 | Mega Bomberman |
| 094 | Mega Man: The Wily Wars |
| 095 | Mega SWIV |
| 096 | Mega Turrican |
| 097 | Mickey Mania (Disney) |
| 098 | Mickey's Ultimate Challenge |
| 099 | Micro Machines Military |
| 100 | Micro Machines: Turbo Tournament 96 |
| 101 | Mortal Kombat |
| 102 | Mortal Kombat II |
| 103 | Mortal Kombat 3 |
| 104 | Mr. Nutz |
| 105 | Ms. Pac-Man |
| 106 | Another World / Out of This World |
| 107 | Pocahontas (Disney) |
| 108 | Powerball |
| 109 | Prince of Persia |
| 110 | Pulseman |
| 111 | QuackShot starring Donald Duck |
| 112 | Ristar |
| 113 | Sagaia |
| 114 | SeaQuest DSV |
| 115 | Sensible Soccer: European Champions |
| 116 | Sonic & Knuckles |
| 117 | Sonic 3D Blast |
| 118 | Sonic the Hedgehog |
| 119 | Sonic the Hedgehog 2 |
| 120 | Sonic the Hedgehog 3 |
| 121 | Sonic the Hedgehog Spinball |
| 122 | Spider-Man |
| 123 | Spider-Man (Animated Series) |
| 124 | Spider-Man & Venom: Maximum Carnage |
| 125 | Spider-Man / X-Men: Arcade's Revenge |
| 126 | Thunder Force II |
| 127 | Thunder Force III |
| 128 | Tinhead |
| 129 | Toy Story |
| 130 | Ultimate Mortal Kombat 3 |
| 131 | Vectorman |
| 132 | Vectorman 2 |
| 133 | Venom - Spider-Man: Separation Anxiety |
| 134 | Verytex |
| 135 | Viewpoint |
| 136 | Virtua Fighter 2 |
| 137 | Virtua Racing |
| 138 | Vixen 357 |
| 139 | Wani Wani World |
| 140 | Warrior of Rome |
| 141 | Warrior of Rome 2 |
| 142 | Warsong |
| 143 | Winter Challenge |
| 144 | Wonder Boy III: Monster Lair |
| 145 | Wonder Boy in Monster World |
| 146 | World of Illusion Starring Mickey Mouse & Donald Duck (Disney) |
| 147 | Worms |
| 148 | WWF WrestleMania: The Arcade Game |
| 149 | X-Men |
| 150 | X-Men 2: Clone Wars |
| 151 | Xenon 2: Megablast |
| 152 | Zero the Kamikaze Squirrel |
| 153 | Zero Tolerance |
| 154 | Zero Wing |
| 155 | Zool: Ninja of the "Nth" Dimension |
| 156 | Zoom |
| 157 | Zoop |