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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.
Last Fortress - Toride (Metro, 1994)
Memory Area:lastfort_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x400000-0x40FFFF65536RAM, Mirror0x0f0000 (// RAM (mirrored))
0x800000-0x81FFFF131072RAM Write, Sharedmetro_vram_0_w, vram_0 (// Layer 0)
0x820000-0x83FFFF131072RAM Write, Sharedmetro_vram_1_w, vram_1 (// Layer 1)
0x840000-0x85FFFF131072RAM Write, Sharedmetro_vram_2_w, vram_2 (// Layer 2)
0x860000-0x86FFFF65536Readmetro_bankedrom_r (// Banked ROM)
0x870000-0x871FFF8192RAM(// ???)
0x872000-0x873FFF8192RAM Device Write, Sharedpalette, palette_device, write, palette (// Palette)
0x874000-0x874FFF4096RAM, Sharedspriteram (// Sprites)
0x878000-0x8787FF2048RAM, Sharedtiletable (// Tiles Set)
0x878800-0x87881320Write Only, Sharedvideoregs (// Video Registers)
0x878840-0x87884D14Write, Sharedmetro_blitter_w, blitter_regs (// Tiles Blitter)
0x878860-0x87886B12Write, Sharedmetro_window_w, window (// Tilemap Window)
0x878870-0x87887B12Write Only, Sharedscroll (// Scroll)
0x878880-0x8788812Write NOP(// ? CRT)
0x878890-0x8788912Write NOP(// ? CRT)
0x8788A2-0x8788A32Read/Writemetro_irq_cause_r, metro_irq_cause_w (// IRQ Cause / IRQ Acknowledge)
0x8788A4-0x8788A52Write Only, Sharedirq_enable (// IRQ Enable)
0x8788A8-0x8788A92Writemetro_soundlatch_w (// To Sound CPU)
0x8788AA-0x8788AB2Write Only, Sharedrombank (// Rom Bank)
0x8788AC-0x8788AD2Write Only, Sharedscreenctrl (// Screen Control)
0xC00000-0xC000012Read/Writemetro_soundstatus_r, metro_soundstatus_w (// From / To Sound CPU)
0xC00002-0xC000032Writemetro_coin_lockout_1word_w (// Coin Lockout)
0xC00004-0xC000052Read PortIN0 (// Inputs)
0xC00006-0xC000072Read PortIN1 (//)
0xC00008-0xC000092Read PortIN2 (//)
0xC0000A-0xC0000B2Read PortDSW0 (//)
0xC0000C-0xC0000D2Read PortDSW1 (//)
0x0003DifficultyActive High
0x0002EasyActive High
0x0003NormalActive High
0x0001HardActive High
0x0000HardestActive High
0x0004UnusedActive High
0x0004OffActive High
0x0000OnActive High
0x0008Ask PlayerActive High
0x0000YesActive High
0x00102 CreditsActive High
0x00001 CreditActive High
0x0020Allow_ContinueActive High
0x0000NoActive High
0x0020YesActive High
0x0040Demo_SoundsActive High
0x0000OffActive High
0x0040OnActive High
0x0080MahjongActive High
0x0000CardsActive High
0xC0000E-0xC0000F2Read PortIN3 (//)
0xffffUnknownActive Low
Memory Area:metro_sound_io_map
Address RangeLengthFunctionDescription
0x00001Writemetro_portb_w
0x00001Read/Writemetro_porta_r, metro_porta_w
0x00001Writemetro_sound_rombank_w
Memory Area:metro_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM(/* External ROM */)
0x4000-0x7FFF16384ROM Bankbank1 (/* External ROM (Banked) */)
0x8000-0x87FF2048RAM(/* External RAM */)
0xFF00-0xFFFF256RAM(/* Internal RAM */)
 

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
0x0000-0x3FFF16384tr_jb12CRC(8a8f5fef) (Fluke: 62A7)
0x0000-0x3FFF16384tr_jb12CRC(8a8f5fef) (Fluke: 62A7)
0x0000-0x3FFF16384tr_jb12CRC(8a8f5fef) (Fluke: 62A7)
0x0000-0x3FFF16384tr_jb12CRC(8a8f5fef) (Fluke: 62A7)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072tr_jb11CRC(83786a09) (Fluke: A3C7)
0x0000-0x1FFFF131072tr_jb11CRC(83786a09) (Fluke: A3C7)
0x0000-0x1FFFF131072tr_jb11CRC(83786a09) (Fluke: A3C7)
0x0000-0x1FFFF131072tr_jb11CRC(83786a09) (Fluke: A3C7)
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