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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.
Wakakusamonogatari Mahjong Yonshimai (Maboroshi Ware, 1996)
Memory Area:mj4simai_map
Address RangeLengthFunctionDescription
0x0000-0x1FFFFF2097152ROM(// ROM)
0x200000-0x20FFFF65536RAM(// RAM)
0x600000-0x6000012Readmj4simai_p1_r (// P1)
0x600002-0x6000032Readmj4simai_p2_r (// P2)
0x600004-0x6000052Writemj4simai_keyboard_w (// select keyboard row to read)
0x600006-0x6000072Device Readwatchdog, watchdog_timer_device, reset16_r
0x600100-0x6001012Read PortSYSTEM (//)
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0xff00UnknownActive Low
0x600200-0x6002012Write NOP(// Leds? Coins?)
0x600300-0x6003012Read PortDSW1 (// DSW 1)
0x0007CoinageActive 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
0x0008Demo_SoundsActive High
0x0000OffActive High
0x0008OnActive High
0x0000OffActive High
0x0010OnActive High
0x0020Flip_ScreenActive High
0x0020OffActive High
0x0000OnActive High
0x0040Free_PlayActive High
0x0040OffActive High
0x0000OnActive High
0xff00UnknownActive Low
0x600300-0x60030F16Writesound_bank_w (// Samples Banks)
0x600302-0x6003032Read PortDSW2 (// DSW 2)
0x0007DifficultyActive High
0x00040Active High
0x00031Active High
0x00022Active High
0x00013Active High
0x00004Active High
0x00075Active High
0x00066Active High
0x00057Active High
0x0008Allow_ContinueActive High
0x0000NoActive High
0x0008YesActive High
0x0010NoActive High
0x0000YesActive High
0x0020OffActive High
0x0000OnActive High
0x0040UnknownActive High
0x0040OffActive High
0x0000OnActive High
0x0080UnknownActive High
0x0080OffActive High
0x0000OnActive High
0xff00UnknownActive Low
0xB00000-0xB03FFF16384Device Read/Writex1snd, x1_010_device, word_r, word_w (// Sound)
0xC00000-0xC3FFFF262144RAM, Sharedspriteram (// Sprites)
0xC40000-0xC4FFFF65536RAM Device Write, Sharedpalette, palette_device, write, palette (// Palette)
0xC60000-0xC6003F64Write, Sharedvregs_w, vregs (// Video Registers)
0xFFFC00-0xFFFFFF1024Device Read/Writetmp68301, tmp68301_device, regs_r, regs_w (// TMP68301 Registers)
 

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:sprites
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFFF4194304cha-03.u16CRC(d367429a) (Fluke: 652B)
0x400000-0x7FFFFF4194304cha-04.u18CRC(7f2008c3) (Fluke: 0F10)
0x800000-0xBFFFFF4194304cha-05.u15CRC(e94ec40a) (Fluke: 3551)
0xC00000-0xFFFFFF4194304cha-06.u17CRC(5cb0b3a9) (Fluke: D95E)
0x1000000-0x13FFFFF4194304cha-01.u21CRC(35f47b37) (Fluke: 7164)
0x1400000-0x17FFFFF4194304cha-02.u22CRC(f6346860) (Fluke: AA19)
Memory Area:x1snd
Address RangeLengthLabel/LocationDescription
0x100000-0x4FFFFF4194304cha-07.u32CRC(817519ee) (Fluke: 5887)
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