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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.
Space Invaders / Qix Silver Anniversary Edition (Taito / Namco, 2003)
Memory Area:invqix_io_map
Address RangeLengthFunctionDescription
0x00001Read PortP1
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Right 2 players startActive Low
0x0080UnusedActive Low
0x00001Read/Writeport3_r, port3_w
0x00001Read/Writeport5_r, port5_w
0x00001Read, Write NOPportg_r,
0x00001Read/Writeport6_r, port6_w
0x00001Read Port, Write NOPSYSTEM,
0x0002Coin 1Active Low
0x0004Left 1 player startActive Low
0x0008Service 1Active Low
0x0010Coin 2Active Low
0x0020Left 2 players startActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00001Read PortP4
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Right 1 player startActive Low
0x0080UnusedActive Low
0x00001Readporta_r
Memory Area:invqix_prg_map
Address RangeLengthFunctionDescription
0x0000-0x1FFFFF2097152ROM, Regionprogram, 0
0x200000-0x21FFFF131072RAM
0x400000-0x4000012Device Write 8-bitoki, okim9810_device, write_TMP_register, 0x00ff
0x400000-0x4000012Device Write 8-bitoki, okim9810_device, write, 0xff00
0x400002-0x4000032Device Read 8-bitoki, okim9810_device, read, 0xff00
0x600000-0x61FFFF131072RAM, Sharedvram
0x620004-0x6200052Writevctl_w
 

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:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152f34-01.ic13CRC(7b055722),Can also be labeled F34-03 based on ROM chip type
Memory Area:program
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152f34-02.ic2CRC(035ace40)
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