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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.
Tetris (Atari Games, 1988)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096RAM
0x1000-0x1FFF4096RAM Write, Sharedvideoram_w, videoram
0x2000-0x20FF256Mirror, RAM Device Write, Shared0x0300, palette, palette_device, write, palette
0x2400-0x25FF512Mirror, RAM Write, Shared0x0200, nvram_w, nvram
0x2800-0x280F16Mirror, Device Read/Write0x03e0, pokey1, pokey_device, read, write
0x2810-0x281F16Mirror, Device Read/Write0x03e0, pokey2, pokey_device, read, write
0x30001Mirror, Device Write0x03ff, watchdog, watchdog_timer_device, reset_w
0x34001Mirror, Write0x03ff, nvram_enable_w
0x38001Mirror, Write0x03ff, irq_ack_w
0x3C001Mirror, Write0x03ff, coincount_w
0x4000-0x5FFF8192ROM
0x6000-0x7FFF8192Readslapstic_r
0x8000-0xFFFF32768ROM
 

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.   
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536136066-1101.35aCRC(84a1939f)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x10000-0x17FFF32768136066-1100.45fCRC(2acbdb09)
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