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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.
Nouryoku Koujou Iinkai (Tecmo, 1995)
Memory Area:bjtwin_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x80000-0x800012Read PortIN0
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008Start 1Active Low
0x0010Start 2Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x80002-0x800032Read PortIN1
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x0100Joystick RightActive Low
0x0200Joystick LeftActive Low
0x0400Joystick DownActive Low
0x0800Joystick UpActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000UnknownActive Low
0x8000UnknownActive Low
0x80008-0x800092Read PortDSW1
0x0002SlowActive High
0x0003NormalActive High
0x0001FastActive High
0x0000Very FastActive High
0x000cDifficultyActive High
0x0008EasyActive High
0x000cNormalActive High
0x0004HardActive High
0x0000HardestActive High
0x0010Free_PlayActive High
0x0010OffActive High
0x0000OnActive High
0x00e0CoinageActive High
0x00204C_1CActive High
0x00a03C_1CActive High
0x00602C_1CActive High
0x00e01C_1CActive High
0x00002C_3CActive High
0x00c01C_2CActive High
0x00401C_3CActive High
0x00801C_4CActive High
0x8000A-0x8000B2Read PortDSW2
0x0001UnusedActive High
0x0001OffActive High
0x0000OnActive High
0x0002UnusedActive High
0x0002OffActive High
0x0000OnActive High
0x0004UnusedActive High
0x0004OffActive High
0x0000OnActive High
0x0008UnusedActive High
0x0008OffActive High
0x0000OnActive High
0x0010UnusedActive High
0x0010OffActive High
0x0000OnActive High
0x0020Flip_ScreenActive High
0x0020OffActive High
0x0000OnActive High
0x0040Demo_SoundsActive High
0x0000OffActive High
0x0040OnActive High
0x80014-0x800152Writenmk_flipscreen_w
0x84000-0x840012Device Read/Write 8-bitoki1, okim6295_device, read, write, 0x00ff
0x84010-0x840112Device Read/Write 8-bitoki2, okim6295_device, read, write, 0x00ff
0x84020-0x8402F16Device Write 8-bitnmk112, nmk112_device, okibank_w, 0x00ff
0x88000-0x887FF2048RAM Device Write, Sharedpalette, palette_device, write, palette
0x94000-0x940012Writenmk_tilebank_w
0x94002-0x940032Write NOP(/* IRQ enable? */)
0x9C000-0x9CFFF4096Mirror, RAM Write, Shared0x1000, nmk_bgvideoram0_w, nmk_bgvideoram0
0xF0000-0xFFFFF65536RAM, Sharedmainram
 

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:bgtile
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152ic32.4CRC(88d454fd),16x16 tiles (Fluke: 224B)
Memory Area:fgtile
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536ic35.3CRC(03d0c3b1),8x8 tiles (Fluke: 2134)
0x0000-0xFFFF65536ic35.3CRC(03d0c3b1),8x8 tiles (Fluke: 2134)
Memory Area:oki1
Address RangeLengthLabel/LocationDescription
0x40000-0x13FFFF1048576ic30.6CRC(feea34f4),all banked (Fluke: 0917)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x40000-0x13FFFF1048576ic27.7CRC(8a69fded),all banked (Fluke: 4AE4)
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