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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 Plus 2 (Jaleco / The Tetris Company, 1997)
Memory Area:tetrisp2_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM(// ROM)
0x100000-0x103FFF16384RAM, Sharedspriteram (// Object RAM)
0x104000-0x107FFF16384RAM(// Spare Object RAM)
0x108000-0x10FFFF32768RAM(// Work RAM)
0x200000-0x23FFFF262144Read/Writetetrisp2_priority_r, tetrisp2_priority_w
0x300000-0x31FFFF131072RAM Write, Sharedtetrisp2_palette_w, paletteram (// Palette)
0x400000-0x403FFF16384RAM Write, Sharedtetrisp2_vram_fg_w, vram_fg (// Foreground)
0x404000-0x407FFF16384RAM Write, Sharedtetrisp2_vram_bg_w, vram_bg (// Background)
0x408000-0x409FFF8192RAM(// ???)
0x500000-0x50FFFF65536RAM(// Line)
0x600000-0x60FFFF65536RAM Write, Sharedtetrisp2_vram_rot_w, vram_rot (// Rotation)
0x650000-0x651FFF8192RAM Writetetrisp2_vram_rot_w (// Rotation (mirror))
0x800000-0x8000034Device Read/Write 8-bitymz, ymz280b_device, read, write, 0x00ff (// Sound)
0x900000-0x903FFF16384Read, Write, Sharedtetrisp2_nvram_r, tetrisp2_nvram_w, nvram (// NVRAM)
0x904000-0x907FFF16384Read, Writetetrisp2_nvram_r, tetrisp2_nvram_w (// NVRAM (mirror))
0xB00000-0xB000012Writetetrisp2_coincounter_w (// Coin Counter)
0xB20000-0xB200012Write NOP(// ???)
0xB40000-0xB4000B12Write Only, Sharedscroll_fg (// Foreground Scrolling)
0xB40010-0xB4001B12Write Only, Sharedscroll_bg (// Background Scrolling)
0xB4003E-0xB4003F2Write NOP(// scr_size)
0xB60000-0xB6002F48Write Only, Sharedrotregs (// Rotation Registers)
0xBA0000-0xBA001F32Writetetrisp2_systemregs_w (// system param)
0xBA001A-0xBA001B2Write NOP(// Lev 4 irq ack)
0xBA001E-0xBA001F2Write NOP(// Lev 2 irq ack)
0xBE0000-0xBE00012Read NOP(// INT-level1 dummy read)
0xBE0002-0xBE00032Read PortPLAYERS (// Inputs)
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080UnusedActive Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 3Active Low
0x8000UnusedActive Low
0xBE0004-0xBE00052Readtetrisp2_ip_1_word_r (// Inputs & protection)
0xBE0008-0xBE00092Read PortDSW (// Inputs)
0x0007Coin_AActive High
0x00005C_1CActive High
0x00014C_1CActive High
0x00023C_1CActive High
0x00032C_1CActive High
0x00071C_1CActive High
0x00061C_2CActive High
0x00051C_3CActive High
0x00041C_4CActive High
0x0038Coin_BActive High
0x00005C_1CActive High
0x00084C_1CActive High
0x00103C_1CActive High
0x00182C_1CActive High
0x00381C_1CActive High
0x00301C_2CActive High
0x00281C_3CActive High
0x00201C_4CActive High
0x0040Free_PlayActive High
0x0040OffActive High
0x0000OnActive High
0x0300DifficultyActive High
0x0000EasyActive High
0x0300NormalActive High
0x0100HardActive High
0x0200HardestActive High
0x00001Active High
0x04003Active High
0x0800LanguageActive High
0x0800JapaneseActive High
0x0000EnglishActive High
0x1000OffActive High
0x0000OnActive High
0x0000OffActive High
0x2000OnActive High
0x4000Demo_SoundsActive High
0x0000OffActive High
0x4000OnActive High
0x8000Flip_ScreenActive High
0x8000OffActive High
0x0000OnActive High
0xBE000A-0xBE000B2Device Readwatchdog, watchdog_timer_device, reset16_r (// Watchdog)
 

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:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFFF419430496019-06.13CRC(16f7093c) (Fluke: DBF4)
0x0000-0x3FFFFF419430496019-06.13CRC(16f7093c) (Fluke: DBF4)
0x0000-0x3FFFFF419430496019-06.13CRC(16f7093c) (Fluke: DBF4)
0x400000-0x4FFFFF104857696019-04.6CRC(b849dec9) (Fluke: C6ED)
0x400000-0x4FFFFF104857696019-04.6CRC(b849dec9) (Fluke: C6ED)
0x400000-0x4FFFFF104857696019-04.6CRC(b849dec9) (Fluke: C6ED)
Memory Area:gfx4
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288tetp2-10.ic27CRC(34dd1bad) (Fluke: 4FC6)
0x0000-0x7FFFF524288tetp2-10.ic27CRC(34dd1bad) (Fluke: 4FC6)
0x0000-0x7FFFF524288tetp2-10.ic27CRC(34dd1bad) (Fluke: 4FC6)
Memory Area:ymz
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFFF419430496019-07.7CRC(a8a61954) (Fluke: E1E4)
0x0000-0x3FFFFF419430496019-07.7CRC(a8a61954) (Fluke: E1E4)
0x0000-0x3FFFFF419430496019-07.7CRC(a8a61954) (Fluke: E1E4)
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