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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.
PT Reach Mahjong (Irem, 1979)
Memory Area:m14_io_map
Address RangeLengthFunctionDescription
0x00F81Read Port, Write NOPAN_PADDLE,
0x00F8-0x00FC5Write NOP
0x00F91Read, Write NOPinput_buttons_r,
0x00FA1Read, Write NOPm14_rng_r,
0x00FB1Read Port, WriteDSW, hopper_w
Memory Area:m14_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192ROM
0x2000-0x23FF1024RAM
0xE000-0xE3FF1024RAM Write, Sharedm14_vram_w, video_ram
0xE400-0xE7FF1024RAM Write, Sharedm14_cram_w, color_ram
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024mgpa9.binCRC(cb68b4ec) (Fluke: 4943)
0x0400-0x07FF1024mgpa10.binCRC(e1a4ebdc) (Fluke: 4B1F)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024mgpb1.binCRC(47c041b8) (Fluke: 272B)
0x0400-0x07FF1024mgpa2.binCRC(cf8bfa23) (Fluke: 3120)
0x0800-0x0BFF1024mgpa3.binCRC(a07a3093) (Fluke: 0E6C)
0x0C00-0x0FFF1024mgpa4.binCRC(a420241c) (Fluke: 5A3D)
0x1000-0x13FF1024mgpa5.binCRC(a2df92a3) (Fluke: A477)
0x1400-0x17FF1024mgpb6.binCRC(f5c0fcd4) (Fluke: 4FA3)
0x1800-0x1BFF1024mgpa7.binCRC(56ed7eb2) (Fluke: EC90)
0x1C00-0x1FFF1024mgpb8.binCRC(3ecb8214) (Fluke: A88A)
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