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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.
Mahjong Quest (Taito Corporation, 1990)
Memory Area:mjnquest_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM
0x110000-0x11FFFF65536RAM(/* "sram" */)
0x120000-0x12FFFF65536RAM
0x200000-0x2000078Device Read/Writetc0110pcr, tc0110pcr_device, word_r, word_w (/* palette */)
0x300000-0x30000F16Readmjnquest_dsw_r
0x310000-0x3100012Readmjnquest_input_r
0x320000-0x3200012Writemjnquest_inputselect_w
0x330000-0x3300012Write NOP(/* watchdog ? */)
0x350000-0x3500012Write NOP(/* watchdog ? */)
0x360000-0x3600012Device Write 8-bittc0140syt, tc0140syt_device, master_port_w, 0xff00
0x360002-0x3600032Device Read/Write 8-bittc0140syt, tc0140syt_device, master_comm_r, master_comm_w, 0xff00
0x380000-0x3800012Device Writetc0100scn, tc0100scn_device, gfxbank_w (/* scr gfx bank select */)
0x400000-0x40FFFF65536Device Read/Writetc0100scn, tc0100scn_device, word_r, word_w (/* tilemaps */)
0x420000-0x42000F16Device Read/Writetc0100scn, tc0100scn_device, ctrl_word_r, ctrl_word_w
0x500000-0x50FFFF65536RAM, Sharedspriteram
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x7FFF16384ROM Bankbank2
0xC000-0xDFFF8192RAM
0xE000-0xE0034Device Read/Writeymsnd, ym2610_device, read, write
0xE2001Read NOP, Device Writetc0140syt, tc0140syt_device, slave_port_w
0xE2011Device Read/Writetc0140syt, tc0140syt_device, slave_comm_r, slave_comm_w
0xE400-0xE4034Write NOP(/* pan */)
0xEA001Read NOP
0xEE001Write NOP(/* ? */)
0xF0001Write NOP(/* ? */)
0xF2001Writesound_bankswitch_w (/* ?? */)
 

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
0x0000-0x3FFF16384c77-10CRC(f16b2c1e) (Fluke: 5F0F)
0x0000-0x3FFF16384c77-10CRC(f16b2c1e) (Fluke: 5F0F)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576c77-01CRC(5ba51205) (Fluke: 9CF0)
0x0000-0xFFFFF1048576c77-01CRC(5ba51205) (Fluke: 9CF0)
0x100000-0x1FFFFF1048576c77-02CRC(6a6f3040) (Fluke: 1DBF)
0x100000-0x1FFFFF1048576c77-02CRC(6a6f3040) (Fluke: 1DBF)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288c77-05CRC(c5a54678) (Fluke: C8A8)
0x0000-0x7FFFF524288c77-05CRC(c5a54678) (Fluke: C8A8)
Memory Area:ymsnd
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288c77-03CRC(312f17b1) (Fluke: BCC9)
0x0000-0x7FFFF524288c77-03CRC(312f17b1) (Fluke: BCC9)
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