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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.
Changes (Orca, 1982)
Memory Area:marineb_io_map
Address RangeLengthFunctionDescription
0x0008-0x00092Device Writeay1, ay8910_device, address_data_w
Memory Area:marineb_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM
0x8800-0x8BFF1024RAM Write, Sharedmarineb_videoram_w, videoram
0x8C00-0x8C3F64RAM, Sharedspriteram (/* Hoccer only */)
0x9000-0x93FF1024RAM Write, Sharedmarineb_colorram_w, colorram
0x98001Writemarineb_column_scroll_w
0x9A001Writemarineb_palette_bank_0_w
0x9C001Writemarineb_palette_bank_1_w
0xA0001Read Port, WriteP2, irq_mask_w
0x0001Joystick UpActive High
0x0002Joystick DownActive High
0x003cUnknownActive High
0x0040Joystick LeftActive High
0x0080Joystick RightActive High
0xA0011Writemarineb_flipscreen_y_w
0xA0021Writemarineb_flipscreen_x_w
0xA8001Read PortP1
0x0001Joystick UpActive High
0x0002Joystick DownActive High
0x003cUnknownActive High
0x0040Joystick LeftActive High
0x0080Joystick RightActive High
0xB0001Read PortDSW
0x00003Active High
0x00014Active High
0x00025Active High
0x00036Active High
0x00001C_1CActive High
0x0004???Active High
0x0008???Active High
0x000cFree_PlayActive High
0x000020000Active High
0x001040000Active High
0x000050000Active High
0x0020100000Active High
0x0040UprightActive High
0x0000CocktailActive High
0x0000OffActive High
0x0080OnActive High
0xB8001Read Port, Write NOPSYSTEM, (/* also watchdog */)
0x0001Coin 1Active High
0x0002UnknownActive High
0x0004Start 1Active High
0x0008Start 2Active High
0x00f0UnknownActive High
 

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
0x0000-0x1FFF8192changes.7CRC(2204194e) (Fluke: BB59)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192changes.6CRC(985c9db4) (Fluke: E9E8)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096changes.1CRC(56f83813) (Fluke: 5723)
0x1000-0x1FFF4096changes.2CRC(0e627f0b) (Fluke: 2357)
0x2000-0x2FFF4096changes.3CRC(ff8291e9) (Fluke: 640A)
0x3000-0x3FFF4096changes.4CRC(a8e9aa22) (Fluke: F930)
0x4000-0x4FFF4096changes.5CRC(f4198e9e) (Fluke: D999)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256changes.1bCRC(f693c153),palette low 4 bits (Fluke: 35E8)
0x0100-0x01FF256changes.1cCRC(f8331705),palette high 4 bits (Fluke: 293F)
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