Technical Info
Specs
Specs
- Main CPU:
- Motorola 6809E @ 1.508625 MHz
- RAM: 2k main memory, plus 3 x 2k bank switched memory
- 256 nibbles of non-volatile memory
- Program ROM: 40k main program, plus 6 x 8k bank switched memory
- Sound: 4 x POKEY @ 1.508625 MHz
- Custom mathbox:
- 4 x AMD 2901 bit-slice processors
- RAM: 16k dedicated (lower 8k shared with CPU)
- Micro code: 1k x 54-bit
- Object ROM: 48k dedicated (shared with CPU as 6 x 8k banks)
- Custom video processor / polygon rasterizer:
- Custom IC: Atari part number 137410-101
- RAM: 2x 8k bank switched memory for display list, shared with mathbox and CPU
- Bitmapped video RAM:
- 256 x 232 pixels, double buffered
- 64 x 9-bit color palette RRGGBBIII
- Alphanumeric overlay:
- 32 x 32 characters (32 x 29 visible)
- 2 palettes of 4 colors
- Video scan
- Dot clock @ 5 MHz
- FPS = 5 MHz / 320 dots per scanline / 256 scanlines = 61.03515625 Hz
Atari manuals
Atari manuals
TM-251 Operators Manual with Illustrated Parts List
SP-251 Schematic Package Supplement
Board images:
Board images:
CPU board
Video board
Custom video processor
ROM / PROM Information
ROM / PROM Information
Atari P/N Board Location Type SHA1---------- ----- -------- ------- ----------------------------------------136029-101 CPU 1H/J 27128-2 868BB3FE5657A4CE45C3DD04BA26A7FB5A5DED42136029-102 CPU 1L/M 27128-2 787EC3E642E1DC3417477348AFA88C764E1F2A88136029-103 CPU 1J/K 2764-2 C1F4041A58F395E24855254849604DFE3B8B0D71136029-104 CPU 1K/L 2764-2 B9FD76EAE8CA24FA3ABC30C46BBF30D89943D97D136029-405 CPU 1A 27128-4 5D71D8EC80C9BE4726189D48AD519B4638160D64136029-206 CPU 1B 27128-4 BD94AD4D536F681EFA81153050A12098A31D79CF136029-207 CPU 1C/D 27128-4 2E0C1E4C265E7D232CA86D5C8760E32FC49FE08D136029-208 CPU 1D/E 2764-4 5B476DBEE8B171A96301B2204420161333D4CA97136029-209 CPU 1E/F 27128-4 A88AE0CC9EE22AA5DD3DB0173F24313189F894F8136029-210 CPU 1F/H 27128-4 DAA77293678B7E822D0672B90789C53098C5451E136029-111 CPU 6N 82HS137 33DEE2382E1E3899FFBAEA859A67AF7334270B4A136029-112 CPU 5P 82HS137 4E1EA039E7A3E341796097B0C6943A4805B89F56136029-113 CPU 6M 82HS137 63A3818450A76D230A75F038B140C3934659313E136029-114 CPU 7N 82HS137 34887DF0F1AC064B4CF4252A225406E8B30872C6136029-115 CPU 8N 82HS137 46B4495002DDF80668A66A4F85CAB99432677B50136029-116 CPU 6P 82HS137 E4CAAB90910B3AA16C314909F8C02EAF212449A1136029-117 CPU 8M 82HS137 39532FC1B14714396764500A9B1C9E4FED97A970136029-118 CPU 9N 82HS137 163E8E764B400D726C725B6A45901C311E62667E136029-119 CPU 8P 82HS137 964A87C879C953563CA84F8E3C1201302C7B2B91136029-120 CPU 9M 82HS137 35CA23D5BBDC2827AFB823A974864B96EB135797136029-121 CPU 7M 82HS137 4628F8AF43D82E578833B1452EC747EEB822B4E4136029-122 CPU 9P 82HS137 02398BA6E7C56D961BF92E2755E530DB1144219D136029-123 CPU 7P 82HS137 85F338EEFF7D8ED58804611BF8446EBB697D196D136029-124 Video 2P 82S185 743C6570C787BC9A2A14716ADC66B8E2FE57129F136029-125 Video 4M 82S123 5B42CC065BFAC467028AE883844C8F94465C3666136029-126 Video 7H 82S131 checksum = 1BE0136029-131 Video 10C 82S129 checksum = A1F7136029-132 Video 7C 82S123 checksum = 1CD5136029-133 Video 7D 82S123 checksum = 0F73Memory Map:
Memory Map:
Dip Switch 3J
Dip Switch 3J
Location 3J on CPU board*** indicated recommended settings. 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ----------------------------------------------- Bonus adder OFF | OFF | OFF | | | | | free play OFF | OFF | ON | | | | | no bonus OFF | ON | OFF | | | | | 3 coin units for 1 bonus OFF | ON | ON | | | | | 5 coin units for 1 bonus ON | OFF | OFF | | | | | 4 coin units for 2 bonus ON | OFF | ON | | | | | 4 coin units for 1 bonus ON | ON | OFF | | | | | 2 coin units for 1 bonus ON | ON | ON | | | | | No bonus ***----------------------------------------------- Left coin mechanism | | | OFF | | | | 1 coin for 2 coin units | | | ON | | | | 1 coin for 1 coin unit ***----------------------------------------------- Right coin mechanism | | | | OFF | OFF | | 1 coin for 6 coin units | | | | OFF | ON | | 1 coin for 5 coin units | | | | ON | OFF | | 1 coin for 4 Coin units | | | | ON | ON | | 1 coin for 1 coin unit ***----------------------------------------------- Coins per credit | | | | | | OFF | OFF 4 coin units for 1 credit | | | | | | OFF | ON 3 coin units for 1 credit | | | | | | ON | OFF 2 coin units for 1 credit | | | | | | ON | ON 1 coin unit for 1 credit ***----------------------------------------------Dip Switch 5E
Dip Switch 5E
Location 5E on CPU board *** indicates recommended settings. 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8----------------------------------------------- Demonstration mode: OFF | | | | | | | on ON | | | | | | | off ***----------------------------------------------- Difficulty level: | OFF | | | | | | easy | ON | | | | | | medium***----------------------------------------------- lives per coin: | | OFF | OFF | | | | 4 lives | | OFF | ON | | | | 5 lives | | ON | OFF | | | | 2 lives | | ON | ON | | | | 3 lives ***----------------------------------------------- Bonus life intervals: | | | | OFF | OFF | | 30,000 | | | | OFF | ON | | 50,000 | | | | ON | OFF | | none | | | | ON | ON | | 20,000 ***----------------------------------------------- minimum game time option: | | | | | | OFF | 90 sec. minimum game time on level 1 | | | | | | ON | 3 lives (limited game time) ***----------------------------------------------- Language | | | | | | | OFF English *** | | | | | | | ON German-----------------------------------------------Pinouts
Pinouts
P20 (CPU PCB) P18 (video PCB) (+5) +5 return 1|A +5 return (+5) (+5)+5 return 1|A +5 return (+5)(GND) +5 reg 2|B +5 reg (GND) (GND) +5 reg 2|B +5 reg (GND) 3|C V sync 3|C RESET 4|D H sync 4|D 5|E +15.5v red 5|E LED 1 6|F LED 2 green 6|Fcoin cointer L. 7|H coin counter R. blue 7|H vid return audio 1 8|J joystick X 8|J audio 2 9|K joystick Y composite sync 9|K left coin 10|L right coin aux coin 11|M 12|N Joystick (P1) 13|P pin 1: X 14|R pin 2: +5 15|S pin 3: GND 16|T FIRE pin 4: Y START 1 17|U START 2 18|V 19|W 20|X (+5) sense 21|Y +5 out (+5) (GND) - sense 22|Z switch ground (GND)