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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.
Heated Barrel (TAD Corporation, 1992)
Memory Area:heatbrl_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x100000-0x1003FF1024RAM
0x100470-0x1004712Writeheatbrl_setgfxbank
0x100600-0x1006012Write NOP(// irq ack?)
0x100640-0x10068F80Device Read/Writecrtc, seibu_crtc_device, read, write
0x100740-0x1007412Read PortDSW1
0x00156C_1CActive High
0x00175C_1CActive High
0x00194C_1CActive High
0x001b3C_1CActive High
0x00038C_3CActive High
0x001d2C_1CActive High
0x00055C_3CActive High
0x00073C_2CActive High
0x001f1C_1CActive High
0x00092C_3CActive High
0x00131C_2CActive High
0x00111C_3CActive High
0x000f1C_4CActive High
0x000d1C_5CActive High
0x000b1C_6CActive High
0x001eA 1/1 B 1/2Active High
0x0014A 2/1 B 1/3Active High
0x000aA 3/1 B 1/5Active High
0x0000A 5/1 B 1/6Active High
0x0001Free_PlayActive High
0x00202Active High
0x00004Active High
0x0040OffActive High
0x0000OnActive High
0x0080OffActive High
0x0000OnActive High
0x02001Active High
0x01002Active High
0x03003Active High
0x00005Active High
0x0000OffActive High
0x0400OnActive High
0x0800UnusedActive Low
0x2000EasyActive High
0x3000NormalActive High
0x1000HardActive High
0x0000Very_HardActive High
0x0000NoActive High
0x4000YesActive High
0x0000OffActive High
0x8000OnActive High
0x100744-0x1007452Read PortPLAYERS12
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active 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
0x100748-0x1007492Read PortPLAYERS34
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active 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
0x10074C-0x10074D2Read PortSYSTEM
0x0001Start 1Active Low
0x0002Start 2Active Low
0x0004UnknownActive Low
0x0008Coin 3Active Low
0x0010Start 3Active Low
0x0020Start 4Active Low
0x0040UnknownActive Low
0x0080Coin 4Active Low
0xff00UnknownActive Low
0x1007C0-0x1007DF32Read/Writesound_comms_r,sound_comms_w
0x100800-0x100FFF2048RAM(// _WRITE(legionna_background_w) AM_SHARE("back_data"))
0x101000-0x1017FF2048RAM(// _WRITE(legionna_foreground_w) AM_SHARE("fore_data"))
0x101800-0x101FFF2048RAM(// _WRITE(legionna_midground_w) AM_SHARE("mid_data"))
0x102000-0x102FFF4096RAM(// _WRITE(legionna_text_w) AM_SHARE("textram"))
0x103000-0x103FFF4096RAM, Sharedspriteram
0x104000-0x104FFF4096RAM(// _DEVWRITE("palette", palette_device, write) AM_SHARE("palette"))
0x108000-0x11FFFF98304RAM
 

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:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576heated-barrel_bg-1.u075CRC(2f5d8baa) (Fluke: 97AC)
0x0000-0xFFFFF1048576heated-barrel_bg-1.u075CRC(2f5d8baa) (Fluke: 97AC)
0x0000-0xFFFFF1048576heated-barrel_bg-1.u075CRC(2f5d8baa) (Fluke: 97AC)
0x0000-0xFFFFF1048576heated-barrel_bg-1.u075CRC(2f5d8baa) (Fluke: 97AC)
Memory Area:gfx5
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288heated-barrel_bg-3.u076CRC(83850e2d) (Fluke: 5D57)
0x0000-0x7FFFF524288heated-barrel_bg-3.u076CRC(83850e2d) (Fluke: 5D57)
0x0000-0x7FFFF524288heated-barrel_bg-3.u076CRC(83850e2d) (Fluke: 5D57)
0x0000-0x7FFFF524288heated-barrel_bg-3.u076CRC(83850e2d) (Fluke: 5D57)
Memory Area:gfx6
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288heated-barrel_bg-2.u074CRC(77ee4c6f) (Fluke: 7CCB)
0x0000-0x7FFFF524288heated-barrel_bg-2.u074CRC(77ee4c6f) (Fluke: 7CCB)
0x0000-0x7FFFF524288heated-barrel_bg-2.u074CRC(77ee4c6f) (Fluke: 7CCB)
0x0000-0x7FFFF524288heated-barrel_bg-2.u074CRC(77ee4c6f) (Fluke: 7CCB)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768barrel_7.u1110CRC(0784dbd8) (Fluke: C7FB)
0x0000-0x7FFF32768barrel_7.u1110CRC(0784dbd8) (Fluke: C7FB)
0x0000-0x7FFF32768barrel_7.u1110CRC(0784dbd8) (Fluke: C7FB)
0x0000-0x7FFF32768barrel_7.u1110CRC(0784dbd8) (Fluke: C7FB)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072barrel_8.u106CRC(489e5b1d) (Fluke: EE79)
0x0000-0x1FFFF131072barrel_8.u106CRC(489e5b1d) (Fluke: EE79)
0x0000-0x1FFFF131072barrel_8.u106CRC(489e5b1d) (Fluke: EE79)
0x0000-0x1FFFF131072barrel_8.u106CRC(489e5b1d) (Fluke: EE79)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512heat07.u0910CRC(265eccc8),N82S147N type BPROM
0x0000-0x01FF512heat07.u0910CRC(265eccc8),N82S147N type BPROM
0x0000-0x01FF512heat07.u0910CRC(265eccc8),N82S147N type BPROM
0x0000-0x01FF512heat07.u0910CRC(265eccc8),N82S147N type BPROM
Memory Area:sprite
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576heated-barrel_obj1.u085CRC(f7a7c31c) (Fluke: 90FF)
0x0000-0xFFFFF1048576heated-barrel_obj1.u085CRC(f7a7c31c) (Fluke: 90FF)
0x0000-0xFFFFF1048576heated-barrel_obj1.u085CRC(f7a7c31c) (Fluke: 90FF)
0x0000-0xFFFFF1048576heated-barrel_obj1.u085CRC(f7a7c31c) (Fluke: 90FF)
0x100000-0x1FFFFF1048576heated-barrel_obj2.u0814CRC(24236116) (Fluke: 45A7)
0x100000-0x1FFFFF1048576heated-barrel_obj2.u0814CRC(24236116) (Fluke: 45A7)
0x100000-0x1FFFFF1048576heated-barrel_obj2.u0814CRC(24236116) (Fluke: 45A7)
0x100000-0x1FFFFF1048576heated-barrel_obj2.u0814CRC(24236116) (Fluke: 45A7)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288copx-d2.u0339CRC(7c52581b),not dumped from this PCB assumed to be the same (Fluke: 6AF0)
0x0000-0x7FFFF524288copx-d2.u0339CRC(7c52581b),not dumped from this PCB assumed to be the same (Fluke: 6AF0)
0x0000-0x7FFFF524288copx-d2.u0339CRC(7c52581b),not dumped from this PCB assumed to be the same (Fluke: 6AF0)
0x0000-0x7FFFF524288copx-d2.u0339CRC(7c52581b),not dumped from this PCB assumed to be the same (Fluke: 6AF0)
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