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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.
Xenophobe (Bally Midway, 1987)
Memory Area:mcr68_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x60000-0x63FFF16384RAM
0x70000-0x70FFF4096RAM Write, Sharedmcr68_videoram_w, videoram
0x71000-0x71FFF4096RAM
0x80000-0x80FFF4096RAM, Sharedspriteram
0x90000-0x9007F128Device Write, Sharedpalette, palette_device, write, palette
0xA0000-0xA000F16Read/Writemcr68_6840_upper_r, mcr68_6840_upper_w
0xB0000-0xBFFFF65536Device Writewatchdog, watchdog_timer_device, reset16_w
0xD0000-0xDFFFF65536Read PortIN0
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Coin 3Active Low
0x0018UnusedActive Low
0x0020TiltActive Low
0x0040Service 1Active Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 3Active Low
0x4000Button 2Active Low
0x8000UnusedActive Low
0xE0000-0xEFFFF65536Read PortIN1
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 3Active Low
0x0040Button 2Active Low
0x0080UnusedActive Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 3Active Low
0x4000Button 2Active Low
0x8000UnusedActive Low
0xF0000-0xFFFFF65536Read PortDSW
0x0004Free_PlayActive High
0x0004OffActive High
0x0000OnActive High
0x00081Active High
0x00002Active High
0x00101000Active High
0x00002000Active High
0x0020Demo_SoundsActive High
0x0000OffActive High
0x0020OnActive High
0x00c0DifficultyActive High
0x0040EasyActive High
0x0000MediumActive High
0x0080HardActive High
0x00c0Medium (duplicate)Active High
0xff00UnusedActive Low
 

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:cpu_plds
Address RangeLengthLabel/LocationDescription
0x00001b61a-49aaj-axad.binPAL20L8 at 9B
0x00011b75a-50aaj-bxad.binPAL16L8 at 1J
0x00021b75a-50aaj-axad.binPAL16L8 at 2J
0x00031b75a-41aaj-axad.binPAL16R4 at 2K
0x00041b75a-41aaj-bxab.binPAL16R4 at 14K
0x00051a59a26axlaxhd.binPLS153 at 11J
0x00061a59a26axlbxhd.binPLS153 at 12J
0x00071a59a26axlcxhd.binPLS153 at 14H
0x000810066-316bx-xxqx.bin20 Pin PLD? at 14E
0x000910066-314bx-xxqx.bin24 Pin PLD? at 14F
0x000A10066-315bx-xxqx.bin20 Pin PLD? at 15E
0x000B10066-313bx-xxqx.bin24 Pin PLD? at 15F
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768xeno_bg.11dCRC(3d2cf284) (Fluke: 2C1A)
0x8000-0xFFFF32768xeno_bg.12dCRC(c32288b1) (Fluke: EF26)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536xeno_fg.7jCRC(b12eddb2) (Fluke: 5893)
0x10000-0x1FFFF65536xeno_fg.8jCRC(20e682f5) (Fluke: 3D0E)
0x20000-0x2FFFF65536xeno_fg.9jCRC(82fb3e09) (Fluke: 13B7)
0x30000-0x3FFFF65536xeno_fg.10jCRC(6a7a3516) (Fluke: 6710)
Memory Area:snd_pld
Address RangeLengthLabel/LocationDescription
0x0000-0x00CB204e36a31axnaxad.binCRC(33e62608),PAL20L10 at U15
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