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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.
TouchDown Fever (SNK, 1987)
Memory Area:tdfever_cpuA_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC0001Read PortIN0
0x0001UnknownActive Low
0x0002ServiceActive Low
0x0004Service 1Active Low
0x0008SpecialActive High
0x0010Coin 1Active Low
0x0020Coin 2Active Low
0x0040Start Game AActive Low
0x0080Start Game BActive Low
0xC0801Read PortIN1
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040Start Game CActive Low
0x0080Start Game DActive Low
0xC1001Read PortIN2
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004UnusedActive Low
0x0008UnusedActive Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Joystick DownActive Low
0x0080Joystick UpActive Low
0xC1801Read PortIN3
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004UnusedActive Low
0x0008UnusedActive Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Joystick DownActive Low
0x0080Joystick UpActive Low
0xC2001Read PortIN4
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004UnknownActive Low
0x0008Start Game EActive Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Joystick DownActive Low
0x0080Joystick UpActive Low
0xC2801Read PortIN5
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Joystick DownActive Low
0x0080Joystick UpActive Low
0xC3001Read PortIN6
0x007fDialActive High
0x0080UnusedActive Low
0xC3801Read PortIN7
0x007fDialActive High
0x0080UnusedActive Low
0xC4001Read PortIN8
0x007fDialActive High
0x0080UnusedActive Low
0xC4801Read PortIN9
0x007fDialActive High
0x0080UnusedActive Low
0xC5001Writesnk_soundlatch_w
0xC5801Read PortDSW1
0x0001Allow_ContinueActive High
0x0001NoActive High
0x0000YesActive High
0x0002CabinetActive High
0x00022 Player UprightActive High
0x00004 Player CocktailActive High
0x0000Every 1st DownActive High
0x0004Every 4 1st DownsActive High
0x0008Every 6 1st DownsActive High
0x000cEvery 8 1st DownsActive High
0x0030Coin_AActive High
0x00004C_1CActive High
0x00103C_1CActive High
0x00202C_1CActive High
0x00301C_1CActive High
0x00c0Coin_BActive High
0x00001C_2CActive High
0x00401C_3CActive High
0x00801C_4CActive High
0x00c01C_6CActive High
0xC6001Read PortDSW2
0x0003DifficultyActive High
0x0003EasyActive High
0x0002NormalActive High
0x0001HardActive High
0x0000HardestActive High
0x000cDemo Sound OffActive High
0x0008Demo Sound OnActive High
0x0000FreezeActive High
0x0004Never Finish (Cheat)Active High
0x00701:00Active High
0x00601:10Active High
0x00501:20Active High
0x00401:30Active High
0x00301:40Active High
0x00201:50Active High
0x00102:00Active High
0x00002:10Active High
0x0080Flip_ScreenActive High
0x0080OffActive High
0x0000OnActive High
0xC6801Writetdfever_coin_counter_w
0xC7001Read/Writesnk_cpuB_nmi_trigger_r, snk_cpuA_nmi_ack_w
0xC8001Writesnk_bg_scrolly_w
0xC8401Writesnk_bg_scrollx_w
0xC8801Writegwara_videoattrs_w (// flip screen, scroll msb)
0xC8C01Writegwar_tx_bank_w (// char and palette bank)
0xC9001Writetdfever_sp_scroll_msb_w
0xC9801Writesnk_sp32_scrolly_w
0xC9C01Writesnk_sp32_scrollx_w
0xD000-0xD7FF2048RAM Write, Sharedsnk_bg_videoram_w, bg_videoram
0xD800-0xDFFF2048RAM, Sharedshare2
0xE000-0xF7FF6144RAM Write, Sharedtdfever_spriteram_w, spriteram (// + work ram)
0xF800-0xFFFF2048RAM Write, Sharedsnk_tx_videoram_w, tx_videoram (// + work RAM)
Memory Area:tdfever_cpuB_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC0001Read/Writesnk_cpuA_nmi_trigger_r, snk_cpuB_nmi_ack_w (// tdfever, tdfever2)
0xC7001Read/Writesnk_cpuA_nmi_trigger_r, snk_cpuB_nmi_ack_w (// fsoccer)
0xC8C01Writegwar_tx_bank_w (// char and palette bank)
0xD000-0xD7FF2048RAM Write, Sharedsnk_bg_videoram_w, bg_videoram
0xD800-0xDFFF2048RAM, Sharedshare2
0xE000-0xF7FF6144RAM Write, Sharedtdfever_spriteram_w, spriteram
0xF800-0xFFFF2048RAM Write, Sharedsnk_tx_videoram_w, tx_videoram
Memory Area:YM3526_Y8950_sound_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xCFFF4096RAM
0xE0001Device Readsoundlatch, generic_latch_8_device, read
0xE8001Device Read/Writeym1, ym3526_device, status_port_r, control_port_w
0xEC001Device Writeym1, ym3526_device, write_port_w
0xF0001Device Read/Writeym2, y8950_device, status_port_r, control_port_w
0xF4001Device Writeym2, y8950_device, write_port_w
0xF8001Read/Writesnk_sound_status_r, snk_sound_status_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
0x0000-0xFFFF65536td3-ver2u.3jCRC(5d13e0b1),Red "U" stamped on label (Fluke: DAB9)
Memory Area:bg_tiles
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536td15.8dCRC(ad6e0927) (Fluke: BE0C)
0x0000-0xFFFF65536td15.8dCRC(ad6e0927) (Fluke: BE0C)
0x10000-0x1FFFF65536td16.8eCRC(181db036) (Fluke: C924)
0x10000-0x1FFFF65536td16.8eCRC(181db036) (Fluke: C924)
0x20000-0x2FFFF65536td17.8fCRC(c5decca3) (Fluke: 26F0)
0x20000-0x2FFFF65536td17.8fCRC(c5decca3) (Fluke: 26F0)
0x30000-0x3FFFF65536td18-ver2u.8gCRC(3924da37),Red "U" stamped on label (Fluke: 18CB)
0x40000-0x4FFFF65536td19.8jCRC(bc17ea7f) (Fluke: 66A9)
0x40000-0x4FFFF65536td19.8jCRC(bc17ea7f) (Fluke: 66A9)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536td2-ver3u.6cCRC(92138fe4),Red "U" stamped on label (Fluke: 6C86)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF10242t.8eCRC(67bdf8a0),Silkscreened as MB7122E (R) (Fluke: 87DD)
0x0000-0x03FF10242t.8eCRC(67bdf8a0),Silkscreened as MB7122E (R) (Fluke: 87DD)
0x0400-0x07FF10241t.8dCRC(9c4a9198),Silkscreened as MB7122E (G) (Fluke: 2C09)
0x0400-0x07FF10241t.8dCRC(9c4a9198),Silkscreened as MB7122E (G) (Fluke: 2C09)
0x0800-0x0BFF10243t.9eCRC(c93c18e8),Silkscreened as MB7122E (B) (Fluke: 0C14)
0x0800-0x0BFF10243t.9eCRC(c93c18e8),Silkscreened as MB7122E (B) (Fluke: 0C14)
Memory Area:sp32_tiles
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536td13.2tCRC(88e2e819) (Fluke: EB9F)
0x0000-0xFFFF65536td13.2tCRC(88e2e819) (Fluke: EB9F)
0x10000-0x1FFFF65536td12-1.2sCRC(f6f83d63),Blue "1" stamped on label (Fluke: 0FB1)
0x10000-0x1FFFF65536td12-1.2sCRC(f6f83d63),Blue "1" stamped on label (Fluke: 0FB1)
0x20000-0x2FFFF65536td11.2rCRC(a0d53fbd) (Fluke: DB01)
0x20000-0x2FFFF65536td11.2rCRC(a0d53fbd) (Fluke: DB01)
0x30000-0x3FFFF65536td10-1.20CRC(c8c71c7b),Blue "1" stamped on label (Fluke: C80E)
0x30000-0x3FFFF65536td10-1.20CRC(c8c71c7b),Blue "1" stamped on label (Fluke: C80E)
0x40000-0x4FFFF65536td9.2nCRC(a8979657) (Fluke: 27E4)
0x40000-0x4FFFF65536td9.2nCRC(a8979657) (Fluke: 27E4)
0x50000-0x5FFFF65536td8-1.2lCRC(28f49182),Blue "1" stamped on label (Fluke: BDA3)
0x50000-0x5FFFF65536td8-1.2lCRC(28f49182),Blue "1" stamped on label (Fluke: BDA3)
0x60000-0x6FFFF65536td7.2kCRC(72a5590d) (Fluke: 8BF0)
0x60000-0x6FFFF65536td7.2kCRC(72a5590d) (Fluke: 8BF0)
0x70000-0x7FFFF65536td6-1.2jCRC(9b6d4053),Blue "1" stamped on label (Fluke: 973F)
0x70000-0x7FFFF65536td6-1.2jCRC(9b6d4053),Blue "1" stamped on label (Fluke: 973F)
Memory Area:sub
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536td1-ver3u.2cCRC(798711f5),Red "U" stamped on label (Fluke: 8922)
Memory Area:tx_tiles
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768td14-u.4nCRC(e841bf1a),Red "U" stamped on label (Fluke: 3607)
Memory Area:ym2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536td5.7pCRC(04794557) (Fluke: 5FC7)
0x0000-0xFFFF65536td5.7pCRC(04794557) (Fluke: 5FC7)
0x10000-0x1FFFF65536td4.7nCRC(155e472e) (Fluke: 8B9C)
0x10000-0x1FFFF65536td4.7nCRC(155e472e) (Fluke: 8B9C)
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