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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.
Zoar (Data East USA, 1982)
Memory Area:audio_map
Address RangeLengthFunctionDescription
0x0000-0x03FF1024Mirror, RAM, Shared0x1c00, , audio_rambase
0x2000-0x3FFF8192Device Writeay1, ay8910_device, data_w
0x4000-0x5FFF8192Device Writeay1, ay8910_device, address_w
0x6000-0x7FFF8192Device Writeay2, ay8910_device, data_w
0x8000-0x9FFF8192Device Writeay2, ay8910_device, address_w
0xA000-0xBFFF8192Readaudio_command_r
0xC000-0xDFFF8192Writeaudio_nmi_enable_w
0xE000-0xEFFF4096Mirror, ROM0x1000,
Memory Area:btime_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM, Sharedrambase
0x0C00-0x0C0F16RAM Device Write, Sharedpalette, palette_device, write, palette
0x1000-0x13FF1024RAM, Sharedvideoram
0x1400-0x17FF1024RAM, Sharedcolorram
0x1800-0x1BFF1024Read/Writebtime_mirrorvideoram_r, btime_mirrorvideoram_w
0x1C00-0x1FFF1024Read/Writebtime_mirrorcolorram_r, btime_mirrorcolorram_w
0x40001Read Port, Write NOPP1,
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x00c0UnusedActive Low
0x40011Read PortP2
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x00c0UnusedActive Low
0x40021Read Port, WriteSYSTEM, btime_video_control_w
0x0001Start 1Active Low
0x0002Start 2Active Low
0x0004Button 3Active Low
0x0008Button 3Active Low
0x0010UnusedActive Low
0x0020UnusedActive Low
0x0040Coin 1Active Low
0x0080Coin 2Active Low
0x40031Read Port, WriteDSW1, audio_command_w
0x0003Coin_AActive High
0x00002C_1CActive High
0x00031C_1CActive High
0x00021C_2CActive High
0x00011C_3CActive High
0x000cCoin_BActive High
0x00002C_1CActive High
0x000c1C_1CActive High
0x00081C_2CActive High
0x00041C_3CActive High
0x0000UprightActive High
0x0040CocktailActive High
0x0080CabinetActive High
0x0000UprightActive High
0x0080CocktailActive High
0x0080SpecialActive High
0x40041Read Port, WriteDSW2, bnj_scroll1_w
0x0001LivesActive High
0x00013Active High
0x00005Active High
0x0006Bonus_LifeActive High
0x00065000Active High
0x000410000Active High
0x000215000Active High
0x000020000Active High
0x0008DifficultyActive High
0x0008EasyActive High
0x0000HardActive High
0x0000ManualActive High
0x0010AutoActive High
0xB000-0xFFFF20480ROM
Memory Area:zoar_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM, Sharedrambase
0x8000-0x83FF1024Write Only, Sharedvideoram
0x8400-0x87FF1024Write Only, Sharedcolorram
0x8800-0x8BFF1024Writebtime_mirrorvideoram_w
0x8C00-0x8FFF1024Writebtime_mirrorcolorram_w
0x90001Writezoar_video_control_w
0x9800-0x98034Write Only, Sharedzoar_scrollram
0x98001Readzoar_dsw1_read
0x98011Read PortDSW2
0x0001LivesActive High
0x00013Active High
0x00005Active High
0x0006Bonus_LifeActive High
0x00065000Active High
0x000410000Active High
0x000215000Active High
0x000020000Active High
0x0008DifficultyActive High
0x0008EasyActive High
0x0000HardActive High
0x0000ManualActive High
0x0010AutoActive High
0x98021Read PortP1
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x00c0UnusedActive Low
0x98031Read PortP2
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x00c0UnusedActive Low
0x98041Read Port, WriteSYSTEM, bnj_scroll2_w
0x0001Start 1Active Low
0x0002Start 2Active Low
0x0004Button 3Active Low
0x0008Button 3Active Low
0x0010UnusedActive Low
0x0020UnusedActive Low
0x0040Coin 1Active Low
0x0080Coin 2Active Low
0x98051Writebnj_scroll1_w
0x98061Writeaudio_command_w
0xD000-0xFFFF12288ROM
 

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
0xE000-0xEFFF4096z09.13cCRC(18d96ff1) (Fluke: 81D7)
Memory Area:bg_map
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096z13.6bCRC(8fefa960) (Fluke: 796D)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096z00.3lCRC(fd2dcb64) (Fluke: 9C22)
0x1000-0x1FFF4096z01.5lCRC(74d3ca48) (Fluke: 6531)
0x2000-0x2FFF4096z03.8lCRC(77b7df14) (Fluke: 5B2B)
0x3000-0x3FFF4096z04.9lCRC(9be786de) (Fluke: F7E4)
0x4000-0x4FFF4096z06.12lCRC(07638c71) (Fluke: 625F)
0x5000-0x5FFF4096z07.14lCRC(f4710f25) (Fluke: FFCF)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048z10.1bCRC(aa8bcab8) (Fluke: 7F65)
0x0800-0x0FFF2048z11.3bCRC(dcdad357) (Fluke: BB00)
0x1000-0x17FF2048z12.4bCRC(ed317e40) (Fluke: ECBA)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096z02.6lCRC(d8c3c122) (Fluke: 3562)
0x1000-0x1FFF4096z05.14lCRC(05dc6b09) (Fluke: 1)
0x2000-0x2FFF4096z08.15lCRC(9a148551) (Fluke: 6AB9)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0xD000-0xDFFF4096z15.12bCRC(1f0cfdb7) (Fluke: 1773)
0xE000-0xEFFF4096z16.13bCRC(7685999c) (Fluke: 5A3A)
0xF000-0xFFFF4096z17.15bCRC(619ea867) (Fluke: 03FD)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32z20.1lCRC(a63f0a07) (Fluke: 7624)
0x0020-0x003F32z21.2lCRC(5e1e5788) (Fluke: 77D4)
0x0040-0x005F32z19.7bCRC(03ee3a96) (Fluke: B138)
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