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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.
Dog Fight (Orca / Thunderbolt, 1983)
Memory Area:io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Writeaysnd, ay8910_device, address_data_w
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x4FFF20480ROM
0x5800-0x5FFF2048RAM
0x60811Read Port, WriteDSW0, control_w
0x00052C_1CActive High
0x00063C_2CActive High
0x00001C_1CActive High
0x00011C_2CActive High
0x00021C_3CActive High
0x00031C_4CActive High
0x00041C_6CActive High
0x0007Free_PlayActive High
0x00385C_1CActive High
0x00304C_1CActive High
0x00283C_1CActive High
0x00202C_1CActive High
0x00001C_1CActive High
0x00183C_4CActive High
0x00081C_2CActive High
0x00101C_3CActive High
0x0000OffActive High
0x0040OnActive High
0x0000OffActive High
0x0080OnActive High
0x60821Read PortDSW1
0x00003Active High
0x00014Active High
0x00025Active High
0x00036Active High
0x0000OffActive High
0x0004OnActive High
0x0000OffActive High
0x0008OnActive High
0x0000OffActive High
0x0010OnActive High
0x000020000 50000Active High
0x002040000 70000Active High
0x0040UprightActive High
0x0000CocktailActive High
0x0000OffActive High
0x0080OnActive High
0x60831Read PortIN0
0x0001Start 1Active High
0x0002Start 2Active High
0x0004Joystick RightActive High
0x0008Joystick LeftActive High
0x0010UnknownActive High
0x0020UnknownActive High
0x0040UnknownActive High
0x0080UnknownActive High
0x60841Read PortIN1
0x0001Coin 2Active High
0x0002Coin 1Active High
0x0004Coin 3Active High
0x0008Joystick RightActive High
0x0010UnknownActive High
0x0020Button 1Active High
0x0040Button 1Active High
0x0080Joystick LeftActive High
0x60901Device Read, Writesoundlatch, generic_latch_8_device, read, master_soundlatch_w
0x70001Read NOP, Device Writewatchdog, watchdog_timer_device, reset_w (/* NOP??? */)
0x71001Writenmi_mask_w
0x72001Writeflipscreen_w
0x9000-0x903F64RAM Write, Sharedattributes_w, attributeram
0x9040-0x905F32RAM, Sharedspriteram
0x9060-0x907F32RAM, Sharedbulletsram
0x9080-0x93FF896RAM
0xA000-0xA3FF1024RAM Write, Sharedvideoram_w, videoram
0xB000-0xB3FF1024RAM Write, Sharedvideoram2_w, videoram_2
0xC000-0xCFFF4096ROM
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192ROM
0x2000-0x23FF1024RAM
0x40001Writesound_nmi_enable_w
0x60001Device Read/Writesoundlatch, generic_latch_8_device, read, write
 

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
0x0000-0x0FFF4096df-1.4nCRC(dcbb1c5b) (Fluke: CDC3)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048df-6.3sCRC(3059b515) (Fluke: BFFF)
0x0800-0x17FF4096df-7.7nCRC(ffe05fee) (Fluke: 47D3)
0x1800-0x27FF4096df-8.7rCRC(2cb51793) (Fluke: C859)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192df-2.4fCRC(ad24b28b) (Fluke: EDBD)
0x2000-0x3FFF8192df-3.4hCRC(cd172707) (Fluke: E105)
0x4000-0x4FFF4096df-5.4nCRC(874dc6bf) (Fluke: 104F)
0xC000-0xCFFF4096df-4.4mCRC(d8aa3d6d) (Fluke: 9FD1)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32mmi6331.2aCRC(69a35aa5) (Fluke: B386)
0x0020-0x003F32mmi6331.2bCRC(596ae457) (Fluke: 77A2)
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