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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.
Double Dealer (NMK, 1991)
Memory Area:ddealer
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x80000-0x800012Read PortIN0
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008Start 1Active Low
0x0010Start 2Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x80002-0x800032Read PortIN1
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick DownActive High
0x0008Joystick UpActive High
0x0010Button 1Active High
0x0020Button 2Active High
0x0040UnknownActive High
0x0080UnknownActive High
0x0100Joystick RightActive High
0x0200Joystick LeftActive High
0x0400Joystick DownActive High
0x0800Joystick UpActive High
0x1000Button 1Active High
0x2000Button 2Active High
0x4000UnknownActive High
0x8000UnknownActive High
0x80008-0x800092Read PortDSW1
0x001cCoin_BActive High
0x00104C_1CActive High
0x00083C_1CActive High
0x00182C_1CActive High
0x001c1C_1CActive High
0x000c1C_2CActive High
0x00141C_3CActive High
0x00041C_4CActive High
0x0000Free_PlayActive High
0x00e0Coin_AActive High
0x00804C_1CActive High
0x00403C_1CActive High
0x00c02C_1CActive High
0x00e01C_1CActive High
0x00601C_2CActive High
0x00a01C_3CActive High
0x00201C_4CActive High
0x0000Free_PlayActive High
0x0100Flip_ScreenActive High
0x0100OffActive High
0x0000OnActive High
0x0200Demo_SoundsActive High
0x0200OffActive High
0x0000OnActive High
0x0400LanguageActive High
0x0400JapaneseActive High
0x0000EnglishActive High
0x1800DifficultyActive High
0x0800EasyActive High
0x1800NormalActive High
0x1000HardActive High
0x0000HardestActive High
0x0000OffActive High
0x2000OnActive High
0x8000A-0x8000B2Read PortUNK
0x84000-0x840034Device Write 8-bitymsnd, ym2203_device, write, 0x00ff (// ym ?)
0x88000-0x887FF2048RAM Device Write, Sharedpalette, palette_device, write, palette
0x8C000-0x8CFFF4096RAM Write, Sharedddealer_vregs_w, vregs (// palette ram)
0x90000-0x90FFF4096RAM, Sharedleft_fg_vratop
0x91000-0x91FFF4096RAM, Sharedright_fg_vratop
0x92000-0x92FFF4096RAM, Sharedleft_fg_vrabot
0x93000-0x93FFF4096RAM, Sharedright_fg_vrabot
0x98000-0x980012Writeddealer_flipscreen_w
0x9C000-0x9CFFF4096RAM Write, Sharedback_vram_w, back_vram (// bg tilemap)
0xF0000-0xFDFFF57344RAM, Sharedwork_ram
0xFE000-0xFEFFF4096RAM Write, Sharedddealer_mcu_shared_w, mcu_shared_ram
0xFF000-0xFFFFF4096RAM
 

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
0x0000-0x1FFFF1310724.ic65CRC(4939ff1b) (Fluke: 5D0E)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF5242883.ic64CRC(660e367c) (Fluke: 0CA0)
Memory Area:mcu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096mcu
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF2565.ic67
0x0100-0x01FF2566.ic86
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