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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.
Uchuu Tokkyuu Medalian (Sigma, 1997)
Memory Area:gegege_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Read/Writeymz, ymz280b_device, read, write
0x00A0-0x00A12Read/Writegegege_regs_r, gegege_regs_w
0x00A4-0x00A52Read/Writegegege_regs2_r, gegege_regs2_w
0x00C01Read Port, WriteEEPROM, eeprom_w
0x00C21Read PortBUTTON
0x00C41Read Port, WritePAYOUT, c4_w
0x00C61Writec6_w
0x00C81Writec8_w
0x00E51Read NOP(// during irq)
Memory Area:gegege_mem_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x9FFF8192ROM Bankrombank
0xA000-0xAFFF4096RAM, Sharedspriteram
0xC000-0xC1FF512RAM Device Write, Sharedpalette, palette_device, write, palette
0xC800-0xC87F128RAM, Sharedvtable
0xD000-0xD02134Read/Write, Sharedvregs_r, vregs_w, vregs
0xD0131Readd013_r
0xD0211Readd021_r
0xD800-0xDFFF2048RAM Bankrambank
0xE000-0xEFFF4096RAM, Sharednvram (// battery)
0xF000-0xFFFF4096RAM
 

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
0x0000-0x1FFFF131072b9809-1.ic7CRC(5be6adff)
Memory Area:sprites
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288b9809-2.ic12CRC(18f342b3)
0x80000-0xFFFFF524288b9809-3.ic13CRC(88a2a52a)
0x100000-0x17FFFF524288b9809-4.ic17CRC(ea74eacd)
Memory Area:ymz
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288b9809-5.ic16CRC(470006e6)
0x80000-0xFFFFF524288b9809-6.ic26CRC(4e2d5fdf)
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