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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.
Tahjong Yakitori (Bally Pond / Nasco, 1985)
Memory Area:royalmah_iomap
Address RangeLengthFunctionDescription
0x00011Device Readaysnd, ay8910_device, data_r
0x0002-0x00032Device Writeaysnd, ay8910_device, data_address_w
0x00101Read Port, WriteDSW1, royalmah_palbank_w
0x00000Active High
0x00011Active High
0x00022Active High
0x00033Active High
0x00044Active High
0x00055Active High
0x00065 (6)Active High
0x00075 (7)Active High
0x004030 30 10 10 5 5 1 1Active High
0x002032 24 16 12 8 4 2 1Active High
0x0060100 50 30 10 5 4 3 2Active High
0x0000200 50 30 10 5 4 3 2Active High
0x00111Read Port, WriteSYSTEM, input_port_select_w
Memory Area:royalmah_map
Address RangeLengthFunctionDescription
0x0000-0x6FFF28672ROM, Writeroyalmah_rom_w
0x7000-0x7FFF4096RAM, Sharednvram
0x8000-0xFFFF32768ROM Bankbank1 (// banked ROMs not present in royalmah)
0x8000-0xFFFF32768Write Only, Sharedvideoram
Memory Area:tahjong_iomap
Address RangeLengthFunctionDescription
0x00011Device Readaysnd, ay8910_device, data_r
0x0002-0x00032Device Writeaysnd, ay8910_device, data_address_w
0x00101Read Port, WriteDSW1, royalmah_palbank_w
0x00000Active High
0x00011Active High
0x00022Active High
0x00033Active High
0x00044Active High
0x00055Active High
0x00065 (6)Active High
0x00075 (7)Active High
0x004030 30 10 10 5 5 1 1Active High
0x002032 24 16 12 8 4 2 1Active High
0x0060100 50 30 10 5 4 3 2Active High
0x0000200 50 30 10 5 4 3 2Active High
0x00111Read Port, WriteSYSTEM, input_port_select_w
0x00121Writetahjong_bank_w
0x00131Read PortDSW2
0x000050%Active High
0x000462%Active High
0x000268%Active High
0x000671%Active High
0x000175%Active High
0x000578%Active High
0x000381%Active High
0x000790%Active High
0x00001Active High
0x00085Active High
0x001010Active High
0x001820Active High
0x0020CoinageActive High
0x00001C_1CActive High
0x00201C_2CActive High
0x0000NoActive High
0x0040YesActive High
0x00005Active High
0x008010Active High
Memory Area:tahjong_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM, Writeroyalmah_rom_w
0x4000-0x6FFF12288ROM Bank, Writebank1, royalmah_rom_w
0x7000-0x7FFF4096RAM, Sharednvram
0x8000-0xFFFF32768Write Only, Sharedvideoram
 

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 RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096p1.binCRC(49c922b3)
0x1000-0x1FFF4096p2.binCRC(c33e3cc3)
0x2000-0x2FFF4096p3.binCRC(9e741a74)
0x3000-0x3FFF4096p4.binCRC(dc6ae62b)
0x4000-0x4FFF4096p5.binCRC(cc9123a3) (Fluke: 9BAD)
0x5000-0x5FFF4096p6.binCRC(92150a0f) (Fluke: 30B6)
0x10000-0x13FFF16384s1.binCRC(beff21af)
0x14000-0x17FFF16384s2.binCRC(fed42e7c)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F3218s030n.6kCRC(c074c0f0)
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