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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 Reach Ippatsu (Nihon System, 1998)
Memory Area:hanakanz_map
Address RangeLengthFunctionDescription
0x0000-0x5FFF24576ROM(// ROM)
0x6000-0x6FFF4096RAM(// RAM)
0x7000-0x7FFF4096RAM Bankbank2 (// RAM (Banked))
0x8000-0xFFFF32768ROM Bankbank1 (// ROM (Banked))
Memory Area:hanakanz_portmap
Address RangeLengthFunctionDescription
0x002C1Read/Writehanakanz_busy_r, hanakanz_oki_bank_w
0x002E1Writehanakanz_blitter_reg_w
0x00301Writehanakanz_rombank_w
0x00311Writehanakanz_dsw_w
0x00321Readhanakanz_dsw_r
0x00801Writehanakanz_blitter_data_w
0x00811Writehanakanz_palette_w
0x0083-0x00842Readhanakanz_gfxrom_r
0x00901Read PortSYSTEM
0x0001Gamble PayoutActive Low
0x0002UnknownActive Low
0x0008Service 1Active Low
0x0010Service 2Active Low
0x0020Coin 2Active Low
0x0040Coin 1Active Low
0x0080UnknownActive Low
0x0091-0x00922Readhanakanz_keyb_r
0x00931Writehanakanz_coincounter_w
0x00941Writehanakanz_keyb_w
0x00961Readhanakanz_rand_r
0x00A0-0x00A12Device Writeym2413, ym2413_device, write
0x00C01Device Read/Writeoki, okim6295_device, read, write
0x00E0-0x00EF16Device Read/Writertc, msm6242_device, read, write
Memory Area:mjreach1_portmap
Address RangeLengthFunctionDescription
0x002C1Read/Writehanakanz_busy_r, hanakanz_oki_bank_w
0x002E1Writehanakanz_blitter_reg_w
0x00301Writehanakanz_rombank_w
0x00311Writehanakanz_dsw_w
0x00321Readhanakanz_dsw_r
0x00801Writehanakanz_blitter_data_w
0x00811Writehanakanz_palette_w
0x0083-0x00842Readhanakanz_gfxrom_r
0x00901Writehanakanz_keyb_w
0x00921Readhanakanz_rand_r
0x00931Read/Writemjreach1_protection_r, mjreach1_protection_w
0x00941Read PortSYSTEM
0x0001Gamble PayoutActive Low
0x0002UnknownActive Low
0x0008Service 1Active Low
0x0010Service 2Active Low
0x0020Coin 2Active Low
0x0040Coin 1Active Low
0x0080UnknownActive Low
0x0095-0x00962Readhanakanz_keyb_r
0x00971Writehanakanz_coincounter_w
0x00A0-0x00A12Device Writeym2413, ym2413_device, write
0x00C01Device Read/Writeoki, okim6295_device, read, write
0x00E0-0x00EF16Device Read/Writertc, msm6242_device, read, write
 

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
0x0000-0x7FFFF52428852602-n.5bCRC(6bef7978) (Fluke: 8837)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF52428852601.1cCRC(52666107) (Fluke: 72F9)
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