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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.
Night Slashers (Data East Corporation, 1994)
Memory Area:nslasher_io_sound
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM, Regionaudiocpu, 0
Memory Area:nslasher_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM
0x100000-0x11FFFF131072RAM, Sharedram
0x120000-0x1200FF256Read/Write NOP(/* ACIA (unused) */)
0x140000-0x1400034Write NOP(/* Vblank ack */)
0x150000-0x1500034Writenslasher_eeprom_w (/* Volume port/Eprom/Priority */)
0x163000-0x16309F160RAM Write, Sharedace_ram_w, ace_ram (/* 'Ace' RAM!? */)
0x164000-0x1640034Write NOP(/* Palette control BG2/3 ($1a constant) */)
0x164004-0x1640074Write NOP(/* Palette control Obj1 ($4 constant) */)
0x164008-0x16400B4Write NOP(/* Palette control Obj2 ($6 constant) */)
0x16400C-0x16400F4Write NOP
0x168000-0x169FFF8192RAM Write, Sharedbuffered_palette_w, paletteram
0x16C000-0x16C0034Write NOP
0x16C008-0x16C00B4Writepalette_dma_w
0x170000-0x171FFF8192Read/Writespriteram_r, spriteram_w
0x174000-0x1740034Write NOP(/* Sprite DMA mode (2) */)
0x174010-0x1740134Writebuffer_spriteram_w
0x174018-0x17401B4Write NOP(/* Sprite 'CPU' (unused) */)
0x178000-0x179FFF8192Read/Writespriteram2_r, spriteram2_w
0x17C000-0x17C0034Write NOP(/* Sprite DMA mode (2) */)
0x17C010-0x17C0134Writebuffer_spriteram2_w
0x17C018-0x17C01B4Write NOP(/* Sprite 'CPU' (unused) */)
0x182000-0x183FFF8192Device Read/Writetilegen1, deco16ic_device, pf1_data_dword_r, pf1_data_dword_w
0x184000-0x185FFF8192Device Read/Writetilegen1, deco16ic_device, pf2_data_dword_r, pf2_data_dword_w
0x192000-0x193FFF8192RAM Write, Sharedpf1_rowscroll_w, pf1_rowscroll32
0x194000-0x195FFF8192RAM Write, Sharedpf2_rowscroll_w, pf2_rowscroll32
0x1A0000-0x1A001F32Device Read/Writetilegen1, deco16ic_device, pf_control_dword_r, pf_control_dword_w
0x1C2000-0x1C3FFF8192Device Read/Writetilegen2, deco16ic_device, pf1_data_dword_r, pf1_data_dword_w
0x1C4000-0x1C5FFF8192Device Read/Writetilegen2, deco16ic_device, pf2_data_dword_r, pf2_data_dword_w
0x1D2000-0x1D3FFF8192RAM Write, Sharedpf3_rowscroll_w, pf3_rowscroll32
0x1D4000-0x1D5FFF8192RAM Write, Sharedpf4_rowscroll_w, pf4_rowscroll32
0x1E0000-0x1E001F32Device Read/Writetilegen2, deco16ic_device, pf_control_dword_r, pf_control_dword_w
0x200000-0x207FFF32768Read 16-bitnslasher_debug_r, 0x0000ffff (// seems to be debug switches / code activated by this?)
0x200000-0x207FFF32768Read/Write 16-bitnslasher_protection_region_0_104_r, nslasher_protection_region_0_104_w, 0xffff0000
Memory Area:nslasher_sound
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM
0xA000-0xA0012Device Read/Writeymsnd, ym2151_device, read, write
0xB0001Device Read/Writeoki1, okim6295_device, read, write
0xC0001Device Read/Writeoki2, okim6295_device, read, write
0xD0001Readlatch_r
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536sndprg.17lCRC(18939e92) (Fluke: A68F)
0x0000-0xFFFF65536sndprg.17lCRC(18939e92) (Fluke: A68F)
0x0000-0xFFFF65536sndprg.17lCRC(18939e92) (Fluke: A68F)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152mbh-00.8cCRC(a877f8a3),Encrypted tiles (Fluke: 2AD8)
0x0000-0x1FFFFF2097152mbh-00.8cCRC(a877f8a3),Encrypted tiles (Fluke: 2AD8)
0x0000-0x1FFFFF2097152mbh-00.8cCRC(a877f8a3),Encrypted tiles (Fluke: 2AD8)
0x0000-0x1FFFFF2097152mbh-00.8cCRC(a877f8a3),Encrypted tiles (Fluke: 2AD8)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152mbh-01.9cCRC(1853dafc),Encrypted tiles (Fluke: DB18)
0x0000-0x1FFFFF2097152mbh-01.9cCRC(1853dafc),Encrypted tiles (Fluke: DB18)
0x0000-0x1FFFFF2097152mbh-01.9cCRC(1853dafc),Encrypted tiles (Fluke: DB18)
0x0000-0x1FFFFF2097152mbh-01.9cCRC(1853dafc),Encrypted tiles (Fluke: DB18)
Memory Area:oki1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288mbh-10.14lCRC(c4d6b116) (Fluke: 3C45)
0x0000-0x7FFFF524288mbh-10.14lCRC(c4d6b116) (Fluke: 3C45)
0x0000-0x7FFFF524288mbh-10.14lCRC(c4d6b116) (Fluke: 3C45)
0x0000-0x7FFFF524288mbh-10.14lCRC(c4d6b116) (Fluke: 3C45)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288mbh-11.16lCRC(0ec40b6b) (Fluke: F4A6)
0x0000-0x7FFFF524288mbh-11.16lCRC(0ec40b6b) (Fluke: F4A6)
0x0000-0x7FFFF524288mbh-11.16lCRC(0ec40b6b) (Fluke: F4A6)
0x0000-0x7FFFF524288mbh-11.16lCRC(0ec40b6b) (Fluke: F4A6)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0116279vm-00.3d16L8ACN is read protected
0x0000-0x0116279vm-00.3d16L8ACN is read protected
0x0000-0x0116279vm-00.3d16L8ACN is read protected
0x0200-0x0316279vm-01.4d16L8ACN is read protected
0x0200-0x0316279vm-01.4d16L8ACN is read protected
0x0200-0x0316279vm-01.4d16L8ACN is read protected
0x0400-0x0516279vm-02.8jCRC(53692426)
0x0400-0x0516279vm-02.8jCRC(53692426)
0x0400-0x0516279vm-02.8jCRC(53692426)
0x0400-0x0516279vm-02.8jCRC(53692426)
Memory Area:prom
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512ln-00.j7CRC(5e83eaf3)
0x0000-0x01FF512ln-00.j7CRC(5e83eaf3)
0x0000-0x01FF512ln-00.j7CRC(5e83eaf3)
0x0000-0x01FF512ln-00.j7CRC(5e83eaf3)
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