Mahjong Shuang Long Qiang Zhu 3 Memory Map

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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 Shuang Long Qiang Zhu 3 (IGS, 1999)

Memory Area:igs_majhong_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	ROM	(/* Internal ROM */)
0x8000000-0x807FFFF	524288	ROM, Region	user1, 0 (/* Game ROM */)
0x10000000-0x100003FF	1024	RAM, Shared	igs_mainram (// main ram for asic?)
0x18000000-0x18007FFF	32768	RAM
0x38000000-0x38007FFF	32768	Device Read/Write 8-bit	igs017_igs031, igs017_igs031_device, read,write, 0xffffffff (// guess based on below)
0x38001000-0x380017FF	2048	RAM Write, Shared	igs_cg_videoram_w, igs_cg_videoram (//0x200 * 1 CG PALETTE?)
0x38001800-0x38001FFF	2048	RAM Device Write, Shared	palette, palette_device, write, palette (//0x200 * 1)
0x38002010-0x38002017	8	RAM	(//??????????????)
0x38004000-0x38005FFF	8192	RAM Write, Shared	igs_tx_videoram_w, igs_tx_videoram (/* Text Layer */)
0x38006000-0x38007FFF	8192	RAM Write, Shared	igs_bg_videoram_w, igs_bg_videoram (/* CG Layer */)
0x38009000-0x38009003	4	RAM	(//?????????????? oki 6295)
0x50000000-0x500003FF	1024	Write NOP	(// uploads xor table to external rom here)
0x70000200-0x70000203	4	RAM	(//??????????????)
0xF0000000-0xF000000F	16	Write NOP	(// magic 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:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	slqz3_igs027a

Memory Area:oki

Address Range	Length	Label/Location	Description
0x0000-0x1FFFFF	2097152	u26	CRC(84bc2f3e)

Memory Area:sprites

Address Range	Length	Label/Location	Description
0x0000-0x3FFFFF	4194304	u18	CRC(81428f18) (Fluke: 7F77)

Memory Area:tilemaps

Address Range	Length	Label/Location	Description
0x0000-0x7FFFF	524288	u9	CRC(a82398a9) (Fluke: 5B78)

Memory Area:user1

Address Range	Length	Label/Location	Description
0x0000-0x1FFFFF	2097152	u29	CRC(215fed1e)