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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.
Galaxy Gunners (Electronic Devices Italy, 1989)
Memory Area:fantland_sound_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192RAM
0x80000-0x9FFFF131072ROM
0xC0000-0xFFFFF262144ROM
Memory Area:galaxygn_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768RAM
0x10000-0x2FFFF131072ROM
0x52000-0x521FF512RAM Device Write, Sharedpalette, palette_device, write, palette
0x530001Read Port, WriteP1, fantland_nmi_enable_w
0x0001Coin 1Active Low
0x0002Start 1Active Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Joystick LeftActive Low
0x0020Joystick RightActive Low
0x0040Button 1Active Low
0x0080Button 2Active Low
0x530011Read PortP2
0x0001Coin 2Active Low
0x0002Start 2Active Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Joystick LeftActive Low
0x0020Joystick RightActive Low
0x0040Button 1Active Low
0x0080Button 2Active Low
0x530021Read Port, WriteDSW1, fantland_soundlatch_w
0x00014C_1CActive High
0x00023C_1CActive High
0x00032C_1CActive High
0x00071C_1CActive High
0x00061C_2CActive High
0x00051C_3CActive High
0x00041C_4CActive High
0x0000Free_PlayActive High
0x0000OffActive High
0x0008OnActive High
0x0000NoActive High
0x0010YesActive High
0x0060NormalActive High
0x0040HardActive High
0x0020HarderActive High
0x0000HardestActive High
0x530031Read PortDSW2
0x0001OffActive High
0x0000OnActive High
0x000e1Active High
0x000c2Active High
0x000a3Active High
0x00084Active High
0x00065Active High
0x00046Active High
0x00027Active High
0x00008Active High
0x003010kActive High
0x002020kActive High
0x001030kActive High
0x000040kActive High
0x0040OffActive High
0x0000OnActive High
0x0080OffActive High
0x0000OnActive High
0x54000-0x567FF10240RAM, Sharedspriteram
0x60000-0x6FFFF65536RAM, Sharedspriteram2
0x70000-0x7FFFF65536ROM
0xF0000-0xFFFFF65536ROM
Memory Area:galaxygn_sound_iomap
Address RangeLengthFunctionDescription
0x00801Device Readsoundlatch, generic_latch_8_device, read
0x0100-0x01012Device Read/Writeymsnd, ym2151_device, read, write
 

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
0xC0000-0xCFFFF65536gg20.binCRC(f5c65a85) (Fluke: 850E)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x10000-0x1FFFF65536gg03.binCRC(9e469189) (Fluke: 7DE1)
0x20000-0x2FFFF65536gg02.binCRC(b87a438f) (Fluke: 6214)
0xF0000-0xFFFFF65536gg01.binCRC(ad0e5b29) (Fluke: 1292)
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