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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.
Orius (Konami, 1991)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x80000-0x8FFFF65536RAM, Sharedworkram (// work RAM)
0x80014-0x800152Readxexex_waitskip_r (// helps sound CPU by giving back control as early as possible)
0x90000-0x97FFF32768RAM, Sharedspriteram (// K053247 sprite RAM)
0x98000-0x9FFFF32768Read/Writespriteram_mirror_r, spriteram_mirror_w (// K053247 sprite RAM mirror read)
0xC0000-0xC003F64Device Writek056832, k056832_device, word_w (// VACSET (K054157))
0xC0000-0xC003F64Device Readk056832, k056832_device, word_r
0xC2000-0xC20078Device Writek053246, k053247_device, k053246_word_w (// OBJSET1)
0xC2000-0xC20078Device Readk053246, k053247_device, k053246_reg_word_r
0xC4000-0xC40012Device Readk053246, k053247_device, k053246_word_r (// Passthrough to sprite roms)
0xC6000-0xC7FFF8192Device Read/Writek053250, k053250_device, ram_r, ram_w (// K053250 "road" RAM)
0xC8000-0xC800F16Device Read/Writek053250, k053250_device, reg_r, reg_w
0xCA000-0xCA01F32Device Writek054338, k054338_device, word_w (// CLTC)
0xCA000-0xCA01F32Device Readk054338, k054338_device, word_r
0xCC000-0xCC01F32Device Writek053251, k053251_device, lsb_w (// priority encoder)
0xCC000-0xCC01F32Device Readk053251, k053251_device, lsb_r
0xD4000-0xD40012Writesound_irq_w
0xD6000-0xD601F32RAM(// sound regs fall through)
0xD600C-0xD600D2Writesound_cmd1_w
0xD600E-0xD600F2Writesound_cmd2_w
0xD6014-0xD60152Readsound_status_r
0xD8000-0xD80078Device Writek056832, k056832_device, b_word_w (// VSCCS regs)
0xD8000-0xD80078Device Readk056832, k056832_device, b_word_r
0xDA000-0xDA0012Read PortP1
0xDA002-0xDA0032Read PortP2
0xDC000-0xDC0012Read PortSYSTEM
0xDC002-0xDC0032Read PortEEPROM
0xDE000-0xDE0012Read/Writecontrol2_r, control2_w
0x100000-0x17FFFF524288ROM
0x180000-0x181FFF8192Device Read/Writek056832, k056832_device, ram_word_r, ram_word_w
0x182000-0x183FFF8192Device Read/Writek056832, k056832_device, ram_word_r, ram_word_w
0x190000-0x191FFF8192Device Readk056832, k056832_device, rom_word_r (// Passthrough to tile roms)
0x1A0000-0x1A1FFF8192Device Readk053250, k053250_device, rom_r
0x1B0000-0x1B1FFF8192RAM Device Write, Sharedpalette, palette_device, write, palette
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankz80bank
0xC000-0xDFFF8192RAM
0xE000-0xE22F560Device Read/Writek054539, k054539_device, read, write
0xEC00-0xEC012Device Read/Writeymsnd, ym2151_device, read, write
0xF0001Device Writesoundlatch3, generic_latch_8_device, write
0xF0021Device Readsoundlatch, generic_latch_8_device, read
0xF0031Device Readsoundlatch2, generic_latch_8_device, read
0xF8001Writesound_bankswitch_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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072067uaa05.4eCRC(0e33d6ec) (Fluke: EC28)
Memory Area:eeprom
Address RangeLengthLabel/LocationDescription
0x0000-0x007F128er5911.19bCRC(547ee4e4)
Memory Area:k053250
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288067b08.22fCRC(ca816b7b) (Fluke: F3A2)
Memory Area:k054539
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152067b06.3eCRC(3b12fce4) (Fluke: 6761)
0x200000-0x2FFFFF1048576067b07.1eCRC(ec87fe1b) (Fluke: 124C)
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