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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.
Taisen Mahjong Final Romance 4 (Video System Co., 1998)
Memory Area:fromanc2_sound_io_map
Address RangeLengthFunctionDescription
0x00001Device Read, Write NOPsoundlatch, generic_latch_8_device, read, (// snd cmd (1P) / ?)
0x00041Device Readsoundlatch2, generic_latch_8_device, read (// snd cmd (2P))
0x0008-0x000B4Device Read/Writeymsnd, ym2610_device, read, write
0x000C1Readfromanc2_sndcpu_nmi_clr
Memory Area:fromanc2_sound_map
Address RangeLengthFunctionDescription
0x0000-0xDFFF57344ROM
0xE000-0xFFFF8192RAM
Memory Area:fromanc4_main_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// MAIN ROM)
0x400000-0x7FFFFF4194304ROM(// DATA ROM)
0x800000-0x81FFFF131072RAM(// WORK RAM)
0xD00000-0xD000012Writefromanc2_portselect_w (// PORT SELECT (1P/2P))
0xD10000-0xD100012Write NOP(// ?)
0xD10000-0xD100012Readfromanc2_keymatrix_r (// INPUT KEY MATRIX)
0xD20000-0xD200012Read PortSYSTEM
0xD30000-0xD300012Write NOP(// ?)
0xD50000-0xD500012Write PortEEPROMOUT (// EEPROM DATA)
0xD70000-0xD700012Writefromanc2_sndcmd_w (// SOUND REQ (1P/2P))
0xD80000-0xD8FFFF65536Writefromanc4_videoram_0_w (// VRAM FG (1P/2P))
0xD90000-0xD9FFFF65536Writefromanc4_videoram_1_w (// VRAM BG (1P/2P))
0xDA0000-0xDAFFFF65536Writefromanc4_videoram_2_w (// VRAM TEXT (1P/2P))
0xDB0000-0xDB0FFF4096RAM Device Write, Sharedlpalette, palette_device, write, lpalette (// PALETTE (1P))
0xDC0000-0xDC0FFF4096RAM Device Write, Sharedrpalette, palette_device, write, rpalette (// PALETTE (2P))
0xE00000-0xE0001D30Writefromanc4_gfxreg_0_w (// SCROLL, GFXBANK (1P/2P))
0xE10000-0xE1001D30Writefromanc4_gfxreg_1_w (// SCROLL, GFXBANK (1P/2P))
0xE20000-0xE2001D30Writefromanc4_gfxreg_2_w (// SCROLL, GFXBANK (1P/2P))
0xE30000-0xE3001320Write NOP(// ???)
0xE40000-0xE4001320Write NOP(// ???)
0xE50000-0xE5000910Write NOP(// EXT-COMM PORT ?)
0xE5000C-0xE5000D2Read NOP(// EXT-COMM PORT ?)
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072ic79.binCRC(c9587c09) (Fluke: F97B)
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