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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.
Opa Opa (Sega, 1987)
Memory Area:io_map
Address RangeLengthFunctionDescription
0x007B1Device Writesn1, segapsg_device, write
0x007E-0x007F2Device Writesn2, segapsg_device, write
0x007E1Device Readvdp1, sega315_5124_device, vcount_read
0x00BA1Device Read/Writevdp1, sega315_5124_device, vram_read, vram_write
0x00BB1Device Read/Writevdp1, sega315_5124_device, register_read, register_write
0x00BE1Device Read/Writevdp2, sega315_5124_device, vram_read, vram_write
0x00BF1Device Read/Writevdp2, sega315_5124_device, register_read, register_write
0x00E01Read Porte0
0x00E11Read Porte1
0x00E21Read Porte2
0x00F21Read Portf2
0x00F31Read Portf3
0x00F71Writebank_write
Memory Area:systeme_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM(/* Fixed ROM */)
0x8000-0xBFFF16384Read Bank, Write Bankbank1, vram_write (/* Banked ROM */)
0xC000-0xFFFF16384RAM, Sharedmainram
 

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:key
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192317-0042.keyCRC(d6312538) (Fluke: 7CAF)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768epr11224.ic7CRC(024b1244),encrypted (Fluke: 043A)
0x10000-0x17FFF32768epr11223.ic5CRC(6bc41d6e),encrypted (Fluke: AA78)
0x18000-0x1FFFF32768epr11222.ic4CRC(395c1d0a),encrypted (Fluke: 35AF)
0x20000-0x27FFF32768epr11221.ic3CRC(4ca132a2),encrypted (Fluke: A2AE)
0x28000-0x2FFFF32768epr11220.ic2CRC(a165e2ef),encrypted (Fluke: 47E4)
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