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Memory Map

The following is a memory map that was generated based on the MAME source code (.180).  This information is only as accurate as the MAME driver is.  If you see any errors, please let me know what that error is.
 
The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.
Avalanche (Atari, 1978)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192RAM, Sharedvideoram
0x20001Mirror, Read Port0x0ffc, IN0
0x000cCoinageActive High
0x00082C_1CActive High
0x00041C_1CActive High
0x000c1C_2CActive High
0x0000Free_PlayActive High
0x0030LanguageActive High
0x0000EnglishActive High
0x0030GermanActive High
0x0020FrenchActive High
0x0010SpanishActive High
0x0040Start 2Active High
0x0080Start 1Active High
0x20011Mirror, Read Port0x0ffc, IN1
0x0001Coin 1Active High
0x0002Coin 2Active High
0x0000NoActive High
0x0004YesActive High
0x00003/450 PointsActive High
0x00085/750 PointsActive High
0x0010UnknownActive Low
0x0040Button 1Active High
0x0080CustomActive Low
0x20021Mirror, Read Port0x0ffc, PADDLE
0x00ffPaddleActive High
0x20031Mirror, Read NOP0x0ffc,
0x30001Mirror, Device Write0x0fff, watchdog, watchdog_timer_device, reset_w
0x40001Mirror, Write0x0ff8, avalance_credit_1_lamp_w
0x40011Mirror, Write0x0ff8, avalnche_attract_enable_w
0x40021Mirror, Write0x0ff8, avalance_video_invert_w
0x40031Mirror, Write0x0ff8, avalance_credit_2_lamp_w
0x4004-0x40063Mirror, Write0x0ff8, avalnche_audio_w
0x40071Mirror, Write0x0ff8, avalance_start_lamp_w
0x50001Mirror, Write0x0fff, avalnche_noise_amplitude_w
0x6000-0x7FFF8192ROM
 

ROM Map for this game

 
This is the ROM map for the game.  This should tell you what address the ROM is at, how big it is, what it's used for.   
Sorry, We do not have ROM Memory Map information for this game.
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