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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.
Buccaneers (Duintronic, 1989)
Memory Area:buccanrs_sound_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Read/Writeym1, ym2203_device, read, write
0x0002-0x00032Device Read/Writeym2, ym2203_device, read, write
0x0080-0x00812Device Writem72, m72_audio_device, vigilant_sample_addr_w (/* STL / STH */)
0x00801Device Readsoundlatch, generic_latch_8_device, read (/* SDRE */)
0x00821Device Writem72, m72_audio_device, sample_w (/* COUNT UP */)
0x00831Device Writem72, m72_audio_device, sound_irq_ack_w (/* IRQ clear */)
0x00841Device Readm72, m72_audio_device, sample_r (/* S ROM C */)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xF000-0xFFFF4096RAM
Memory Area:vigilant_io_map
Address RangeLengthFunctionDescription
0x00001Read Port, Device WriteIN0, m72, m72_audio_device, sound_command_byte_w (/* SD */)
0x0010Coin 1Active Low
0x0040Start 2Active Low
0x0080Start 1Active Low
0x00011Read Port, WriteIN1, vigilant_out2_w (/* OUT2 */)
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010UnknownActive Low
0x0020Button 2Active Low
0x0040UnknownActive Low
0x0080Button 1Active Low
0x00021Read PortIN2
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010Coin 2Active Low
0x0020Button 2Active Low
0x0040UnknownActive Low
0x0080Button 1Active Low
0x00031Read PortDSW1
0x000fCoin_AActive High
0x00044C_1CActive High
0x00073C_1CActive High
0x00005 Coins/2 CreditsActive High
0x000a2C_1CActive High
0x00063C_2CActive High
0x00034C_3CActive High
0x000f1C_1CActive High
0x00053 Coins/5 CreditsActive High
0x000e1C_2CActive High
0x000d1C_3CActive High
0x000c1C_4CActive High
0x000b1C_5CActive High
0x00f0Coin_BActive High
0x00404C_1CActive High
0x00703C_1CActive High
0x00005 Coins/2 CreditsActive High
0x00a02C_1CActive High
0x00603C_2CActive High
0x00304C_3CActive High
0x00f01C_1CActive High
0x00503 Coins/5 CreditsActive High
0x00e01C_2CActive High
0x00d01C_3CActive High
0x00c01C_4CActive High
0x00b01C_5CActive High
0x00041Read Port, WriteDSW2, bank_select_w (/* PBANK */)
0x0001Flip_ScreenActive High
0x0001OffActive High
0x0000OnActive High
0x0006LivesActive High
0x00062Active High
0x00043Active High
0x00024Active High
0x00005Active High
0x0018DifficultyActive High
0x0010HardActive High
0x0008MediumActive High
0x0018NormalActive High
0x0000Invicibility (time still decrease)Active High
0x0020CabinetActive High
0x0020UprightActive High
0x0000CocktailActive High
0x0040Demo_SoundsActive High
0x0000OffActive High
0x0040OnActive High
0x0080Allow_ContinueActive High
0x0080NoActive High
0x0000YesActive High
0x0080-0x00812Writevigilant_horiz_scroll_w (/* HSPL, HSPH */)
0x0082-0x00832Writevigilant_rear_horiz_scroll_w (/* RHSPL, RHSPH */)
0x00841Writevigilant_rear_color_w (/* RCOD */)
Memory Area:vigilant_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankbank1 (/* Fallthrough */)
0xC020-0xC0DF192RAM, Sharedspriteram
0xC800-0xCFFF2048RAM Write, Sharedpaletteram_w, paletteram
0xD000-0xDFFF4096RAM, Sharedvideoram
0xE000-0xEFFF4096RAM
 

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
0x0000-0xFFFF65536BC-003_K-0161.U212CRC(95e3c517) (Fluke: 83E4)
0x0000-0xFFFF65536BC-003_K-0161.U212CRC(95e3c517) (Fluke: 83E4)
0x0000-0xFFFF65536BC-003_K-0161.U212CRC(95e3c517) (Fluke: 83E4)
0x10000-0x1FFFF65536BC-004_K-0161.U189CRC(fe2377ab) (Fluke: 0EA6)
0x10000-0x1FFFF65536BC-004_K-0161.U189CRC(fe2377ab) (Fluke: 0EA6)
0x10000-0x1FFFF65536BC-004_K-0161.U189CRC(fe2377ab) (Fluke: 0EA6)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536BC-005_K-0161.U113CRC(16dc435f) (Fluke: FA19)
0x0000-0xFFFF65536BC-005_K-0161.U113CRC(16dc435f) (Fluke: FA19)
0x0000-0xFFFF65536BC-005_K-0161.U113CRC(16dc435f) (Fluke: FA19)
0x10000-0x1FFFF65536BC-006_K-161.U80CRC(4fe3bf97) (Fluke: A661)
0x10000-0x1FFFF65536BC-006_K-161.U80CRC(4fe3bf97) (Fluke: A661)
0x10000-0x1FFFF65536BC-006_K-161.U80CRC(4fe3bf97) (Fluke: A661)
0x40000-0x4FFFF65536BC-008_K-161.U52CRC(078aef7f) (Fluke: 944E)
0x40000-0x4FFFF65536BC-008_K-161.U52CRC(078aef7f) (Fluke: 944E)
0x40000-0x4FFFF65536BC-008_K-161.U52CRC(078aef7f) (Fluke: 944E)
0x50000-0x5FFFF65536BC-007_K-161.U70CRC(f650fa90) (Fluke: 11C8)
0x50000-0x5FFFF65536BC-007_K-161.U70CRC(f650fa90) (Fluke: 11C8)
0x50000-0x5FFFF65536BC-007_K-161.U70CRC(f650fa90) (Fluke: 11C8)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072BC-010_K-163.U27CRC(2d383ff8) (Fluke: 71)
0x0000-0x1FFFF131072BC-010_K-163.U27CRC(2d383ff8) (Fluke: 71)
0x0000-0x1FFFF131072BC-010_K-163.U27CRC(2d383ff8) (Fluke: 71)
0x20000-0x3FFFF131072BC-009_K-163.U49CRC(0c6188fb) (Fluke: 6E05)
0x20000-0x3FFFF131072BC-009_K-163.U49CRC(0c6188fb) (Fluke: 6E05)
0x20000-0x3FFFF131072BC-009_K-163.U49CRC(0c6188fb) (Fluke: 6E05)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536BC-011_K-163.U58CRC(bf1d7e6f) (Fluke: 90B2)
0x10000-0x1FFFF65536BC-012_K-163.U25CRC(87303ba8) (Fluke: A570)
0x10000-0x1FFFF65536BC-012_K-163.U25CRC(87303ba8) (Fluke: A570)
0x10000-0x1FFFF65536BC-012_K-163.U25CRC(87303ba8) (Fluke: A570)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0103260pal16l8.u103PAL is read protected
0x0200-0x0303260pal16l8.u156PAL is read protected
0x0400-0x0503260pal16l8.u42PAL is read protected
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256prom1.u54CRC(c324835e) (Fluke: B00C)
0x0000-0x00FF256prom1.u54CRC(c324835e) (Fluke: B00C)
0x0000-0x00FF256prom1.u54CRC(c324835e) (Fluke: B00C)
0x0100-0x01FF256prom4.u79CRC(e6506ef4) (Fluke: 459C)
0x0100-0x01FF256prom4.u79CRC(e6506ef4) (Fluke: 459C)
0x0100-0x01FF256prom4.u79CRC(e6506ef4) (Fluke: 459C)
0x0200-0x02FF256prom3.u88CRC(b43d094f) (Fluke: D4F1)
0x0200-0x02FF256prom3.u88CRC(b43d094f) (Fluke: D4F1)
0x0200-0x02FF256prom3.u88CRC(b43d094f) (Fluke: D4F1)
0x0300-0x03FF256prom2.u99CRC(e0aa8869) (Fluke: 6123)
0x0300-0x03FF256prom2.u99CRC(e0aa8869) (Fluke: 6123)
0x0300-0x03FF256prom2.u99CRC(e0aa8869) (Fluke: 6123)
Memory Area:samples
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536BC-002_K-0161.U74CRC(36ee1dac) (Fluke: EE00)
0x0000-0xFFFF65536BC-002_K-0161.U74CRC(36ee1dac) (Fluke: EE00)
0x0000-0xFFFF65536BC-002_K-0161.U74CRC(36ee1dac) (Fluke: EE00)
Memory Area:soundcpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536BC-001_K-0161.U128CRC(eb65f8c3) (Fluke: 5D36)
0x0000-0xFFFF65536BC-001_K-0161.U128CRC(eb65f8c3) (Fluke: 5D36)
0x0000-0xFFFF65536BC-001_K-0161.U128CRC(eb65f8c3) (Fluke: 5D36)
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