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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.
Samurai Nihon-Ichi (Kaneko / Taito, 1985)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xCFFF4096RAM
0xD8031Readtsamurai_unknown_d803_r
0xD8061Readunknown_d806_r
0xD9001Readunknown_d900_r
0xD9381Readunknown_d938_r
0xE000-0xE3FF1024RAM Write, Sharedfg_videoram_w, videoram
0xE400-0xE43F64RAM Write, Sharedfg_colorram_w, colorram
0xE440-0xE7FF960RAM
0xE800-0xEFFF2048RAM Write, Sharedbg_videoram_w, bg_videoram
0xF000-0xF3FF1024RAM, Sharedspriteram
0xF4001Write NOP
0xF4011Writesound_command1_w
0xF4021Writesound_command2_w
0xF8001Read PortP1
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick UpActive High
0x0008Joystick DownActive High
0x0010Button 1Active High
0x0020Button 2Active High
0x0040UnknownActive High
0x0080UnknownActive High
0xF8011Read Port, WriteP2, bgcolor_w
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick UpActive High
0x0008Joystick DownActive High
0x0010Button 1Active High
0x0020Button 2Active High
0x0040UnknownActive High
0x0080UnknownActive High
0xF8021Read Port, WriteSYSTEM, scrolly_w
0x0001Coin 1Active High
0x0002Coin 2Active High
0x0004Service 1Active High
0x0008UnusedActive High
0x0010Start 1Active High
0x0020Start 2Active High
0x0040UnknownActive High
0x0080UnknownActive High
0xF8031Writescrollx_w
0xF8041Read PortDSW1
0x00076C_1CActive High
0x00063C_1CActive High
0x00042C_1CActive High
0x00001C_1CActive High
0x00052C_3CActive High
0x00011C_2CActive High
0x00021C_3CActive High
0x00031C_6CActive High
0x00386C_1CActive High
0x00303C_1CActive High
0x00202C_1CActive High
0x00001C_1CActive High
0x00282C_3CActive High
0x00081C_2CActive High
0x00101C_3CActive High
0x00181C_6CActive High
0x0000OffActive High
0x0040OnActive High
0x0000UprightActive High
0x0080CocktailActive High
0xF8051Read PortDSW2
0x00003Active High
0x00015Active High
0x00027Active High
0x0003254 (Cheat)Active High
0x000000Active High
0x000430Active High
0x000850Active High
0x000c70Active High
0x00000x00Active High
0x00100x01Active High
0x00200x02Active High
0x00300x03Active High
0x0000OffActive High
0x0040OnActive High
0x0000OffActive High
0x0080OnActive High
0xFC001Writeflip_screen_w
0xFC011Writenmi_enable_w
0xFC021Writetextbank1_w
0xFC03-0xFC042Writecoincounter_w
Memory Area:sound1_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x60001Readsound_command1_r
0x60011Write NOP(/* ? - probably clear IRQ */)
0x60021Device Writedac1, dac_byte_interface, write
0x7F00-0x7FFF256RAM
Memory Area:sound2_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x60001Readsound_command2_r
0x60011Write NOP(/* ? - probably clear IRQ */)
0x60021Device Writedac2, dac_byte_interface, write
0x7F00-0x7FFF256RAM
Memory Area:z80_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Writeaysnd, ay8910_device, address_data_w
 

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:audio2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF819213.4jCRC(73feb0e2) (Fluke: 326E)
Memory Area:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF819214.4eCRC(220e9c04) (Fluke: B01A)
0x2000-0x3FFF8192a35-15.4cCRC(1e0d1e33) (Fluke: C494)
0x2000-0x3FFF8192a35-15.4cCRC(1e0d1e33) (Fluke: C494)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192a35-04.10aCRC(b97ce9b1) (Fluke: 3E53)
0x0000-0x1FFF8192a35-04.10aCRC(b97ce9b1) (Fluke: 3E53)
0x2000-0x3FFF8192a35-05.10bCRC(55a17b08) (Fluke: FB8B)
0x2000-0x3FFF8192a35-05.10bCRC(55a17b08) (Fluke: FB8B)
0x4000-0x5FFF8192a35-06.10dCRC(f5ee6f8f) (Fluke: 59E8)
0x4000-0x5FFF8192a35-06.10dCRC(f5ee6f8f) (Fluke: 59E8)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096a35-10.11nCRC(0b5a0c45) (Fluke: 340C)
0x0000-0x0FFF4096a35-10.11nCRC(0b5a0c45) (Fluke: 340C)
0x2000-0x2FFF4096a35-11.11qCRC(93346d75) (Fluke: 1D74)
0x2000-0x2FFF4096a35-11.11qCRC(93346d75) (Fluke: 1D74)
0x4000-0x4FFF4096a35-12.11rCRC(f4c69d8a) (Fluke: 28A0)
0x4000-0x4FFF4096a35-12.11rCRC(f4c69d8a) (Fluke: 28A0)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384a35-07.12hCRC(38fc349f) (Fluke: 310C)
0x0000-0x3FFF16384a35-07.12hCRC(38fc349f) (Fluke: 310C)
0x4000-0x7FFF16384a35-08.12jCRC(a07d6dc3) (Fluke: 0F24)
0x4000-0x7FFF16384a35-08.12jCRC(a07d6dc3) (Fluke: 0F24)
0x8000-0xBFFF16384a35-09.12kCRC(c0784a0e) (Fluke: 9F9B)
0x8000-0xBFFF16384a35-09.12kCRC(c0784a0e) (Fluke: 9F9B)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF1638401.3rCRC(d09c8609) (Fluke: BA55)
0x4000-0x7FFF1638402.3tCRC(d0f2221c) (Fluke: CD38)
0x8000-0xBFFF1638403.3vCRC(eee8b0c9) (Fluke: 418A)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256a35-16.2jCRC(72d8b332) (Fluke: AEDD)
0x0000-0x00FF256a35-16.2jCRC(72d8b332) (Fluke: AEDD)
0x0100-0x01FF256a35-17.2lCRC(9bf1829e) (Fluke: A364)
0x0100-0x01FF256a35-17.2lCRC(9bf1829e) (Fluke: A364)
0x0200-0x02FF256a35-18.2mCRC(918e4732) (Fluke: 3FB8)
0x0200-0x02FF256a35-18.2mCRC(918e4732) (Fluke: 3FB8)
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