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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.
XX Mission (UPL, 1986)
Memory Area:map1
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x80012Device Read/Writeym1, ym2203_device, read, write
0x8002-0x80032Device Read/Writeym2, ym2203_device, read, write
0xA0001Read PortP1
0x0080UnknownActive Low
0x0040Start 1Active Low
0x0020Button 2Active Low
0x0010Button 1Active Low
0x0008Joystick RightActive Low
0x0004Joystick LeftActive Low
0x0002Joystick DownActive Low
0x0001Joystick UpActive Low
0xA0011Read PortP2
0x0080Coin 1Active Low
0x0040Start 2Active Low
0x0020Button 2Active Low
0x0010Button 1Active Low
0x0008Joystick RightActive Low
0x0004Joystick LeftActive Low
0x0002Joystick DownActive Low
0x0001Joystick UpActive Low
0xA0021Read PortSTATUS
0x0001SpecialActive High
0x0002CustomActive Low
0x0004SpecialActive High
0x0008SpecialActive High
0x0010SpecialActive High
0x0020SpecialActive High
0x0040SpecialActive High
0x0080SpecialActive High
0xA0021Writestatus_m_w
0xA0031Writeflipscreen_w
0xC000-0xC7FF2048RAM, Sharedfgram
0xC800-0xCFFF2048Read/Write, Sharedbgram_r, bgram_w, bgram
0xD000-0xD7FF2048RAM, Sharedspriteram
0xD800-0xDAFF768RAM Device Write, Sharedpalette, palette_device, write, palette
0xE000-0xEFFF4096Shared, RAMshare5,
0xF000-0xFFFF4096Shared, RAMshare6,
Memory Area:map2
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x7FFF16384ROM Bankbank1
0x8000-0x80012Device Read/Writeym1, ym2203_device, read, write
0x8002-0x80032Device Read/Writeym2, ym2203_device, read, write
0x80061Writebank_sel_w
0xA0001Read PortP1
0x0080UnknownActive Low
0x0040Start 1Active Low
0x0020Button 2Active Low
0x0010Button 1Active Low
0x0008Joystick RightActive Low
0x0004Joystick LeftActive Low
0x0002Joystick DownActive Low
0x0001Joystick UpActive Low
0xA0011Read PortP2
0x0080Coin 1Active Low
0x0040Start 2Active Low
0x0020Button 2Active Low
0x0010Button 1Active Low
0x0008Joystick RightActive Low
0x0004Joystick LeftActive Low
0x0002Joystick DownActive Low
0x0001Joystick UpActive Low
0xA0021Writestatus_s_w
0xA0021Read PortSTATUS
0x0001SpecialActive High
0x0002CustomActive Low
0x0004SpecialActive High
0x0008SpecialActive High
0x0010SpecialActive High
0x0020SpecialActive High
0x0040SpecialActive High
0x0080SpecialActive High
0xA0031Writeflipscreen_w
0xC000-0xC7FF2048Shared, RAMfgram,
0xC800-0xCFFF2048Shared, Read/Writebgram, bgram_r, bgram_w
0xD000-0xD7FF2048Shared, RAMspriteram,
0xD800-0xDAFF768RAM Device Write, Sharedpalette, palette_device, write, palette
0xE000-0xEFFF4096Shared, RAMshare6,
0xF000-0xFFFF4096Shared, RAMshare5,
 

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:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768xx1.4lCRC(86e07709) (Fluke: 9B19)
Memory Area:sub
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384xx2.4bCRC(13fa7049) (Fluke: D184)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768xx3.6aCRC(16fdacab) (Fluke: 14AB)
0x8000-0xFFFF32768xx4.6bCRC(274bd4d2) (Fluke: 253A)
0x10000-0x17FFF32768xx5.6dCRC(c5f35535) (Fluke: F156)
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