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.
Memory Area:mgcrystl
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// ROM)
0x300000-0x30FFFF65536RAM(// Work RAM)
0x400000-0x40001F32Read/Writekaneko16_ay1_YM2149_r, kaneko16_ay1_YM2149_w (// Sound)
0x400200-0x40021F32Read/Writekaneko16_ay2_YM2149_r, kaneko16_ay2_YM2149_w
0x400400-0x4004012Device Read/Write 8-bitoki, okim6295_device, read, write, 0x00ff
0x500000-0x500FFF4096RAM Device Write, Sharedpalette, palette_device, write, palette (// Palette)
0x600000-0x603FFF16384Device Read/Writeview2_0, kaneko_view2_tilemap_device, kaneko_tmap_vram_r, kaneko_tmap_vram_w
0x680000-0x683FFF16384Device Read/Writeview2_1, kaneko_view2_tilemap_device, kaneko_tmap_vram_r, kaneko_tmap_vram_w
0x700000-0x701FFF8192RAM, Sharedspriteram (// Sprites)
0x800000-0x80001F32Device Read/Writeview2_0, kaneko_view2_tilemap_device, kaneko_tmap_regs_r, kaneko_tmap_regs_w
0x900000-0x90001F32Device Read/Writekan_spr, kaneko16_sprite_device, kaneko16_sprites_regs_r, kaneko16_sprites_regs_w
0xA00000-0xA000012Device Readwatchdog, watchdog_timer_device, reset16_r (// Watchdog)
0xB00000-0xB0001F32Device Read/Writeview2_1, kaneko_view2_tilemap_device, kaneko_tmap_regs_r, kaneko_tmap_regs_w
0xC00000-0xC000012Read PortDSW_P1
0x0001Flip_ScreenActive High
0x0001OffActive High
0x0000OnActive High
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000UnknownActive Low
0x8000UnknownActive Low
0xC00002-0xC000032Read PortP2
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000UnknownActive Low
0x8000UnknownActive Low
0xC00004-0xC000052Read PortSYSTEM
0x00ffUnknownActive Low
0x0100Start 1Active Low
0x0200Start 2Active Low
0x0400Coin 1Active Low
0x0800Coin 2Active Low
0x2000TiltActive Low
0x4000Service 1Active Low
0x8000UnknownActive Low
0xD00000-0xD000012Writekaneko16_eeprom_w (// EEPROM)
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576mc000.u38CRC(28acf6f4) (Fluke: E653)
0x0000-0xFFFFF1048576mc000.u38CRC(28acf6f4) (Fluke: E653)
0x100000-0x17FFFF524288mc001.u37CRC(005bc43d) (Fluke: 2B2E)
0x100000-0x17FFFF524288mc001.u37CRC(005bc43d) (Fluke: 2B2E)
0x200000-0x21FFFF131072mc002e02.u36CRC(27ac1056),Labeled as MC002E/U36-02 (Fluke: 4A59)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576mc010.u04CRC(85072772) (Fluke: 4232)
0x0000-0xFFFFF1048576mc010.u04CRC(85072772) (Fluke: 4232)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576mc020.u34CRC(1ea92ff1) (Fluke: 560F)
0x0000-0xFFFFF1048576mc020.u34CRC(1ea92ff1) (Fluke: 560F)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144mc030.u32CRC(c165962e) (Fluke: 3E63)
0x0000-0x3FFFF262144mc030.u32CRC(c165962e) (Fluke: 3E63)
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