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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.
Power Instinct (Atlus, 1993)
Memory Area:powerins_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM
0x100000-0x1000012Read PortSYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008Start 1Active Low
0x0010Start 2Active Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x100002-0x1000032Read PortP1_P2
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Button 4Active Low
0x0100Joystick RightActive Low
0x0200Joystick LeftActive Low
0x0400Joystick DownActive Low
0x0800Joystick UpActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 3Active Low
0x8000Button 4Active Low
0x100008-0x1000092Read PortDSW1
0x0001Free_PlayActive High
0x0001OffActive High
0x0000OnActive High
0x000eCoin_BActive High
0x00084C_1CActive High
0x00043C_1CActive High
0x000c2C_1CActive High
0x00002 Coins/1 Credit (1 to continue)Active High
0x000e1C_1CActive High
0x00061C_2CActive High
0x000a1C_3CActive High
0x00021C_4CActive High
0x0070Coin_AActive High
0x00404C_1CActive High
0x00203C_1CActive High
0x00602C_1CActive High
0x00002 Coins/1 Credit (1 to continue)Active High
0x00701C_1CActive High
0x00301C_2CActive High
0x00501C_3CActive High
0x00101C_4CActive High
0x0080Flip_ScreenActive High
0x0080OffActive High
0x0000OnActive High
0x10000A-0x10000B2Read PortDSW2
0x00011 ChuteActive High
0x00002 ChutesActive High
0x0002OffActive High
0x0000OnActive High
0x0004Demo_SoundsActive High
0x0004OffActive High
0x0000OnActive High
0x0008Allow_ContinueActive High
0x0000OffActive High
0x0008OnActive High
0x0010RedActive High
0x0000BlueActive High
0x0020Game_TimeActive High
0x0020NormalActive High
0x0000ShortActive High
0x00c0DifficultyActive High
0x0040EasyActive High
0x00c0NormalActive High
0x0080HardActive High
0x0000HardestActive High
0x100014-0x1000152Write 8-bitflipscreen_w, 0x00ff
0x100016-0x1000172Write NOP(// ? always 1)
0x100018-0x1000192Write 8-bittilebank_w, 0x00ff
0x10001E-0x10001F2Device Write 8-bitsoundlatch, generic_latch_8_device, write, 0x00ff
0x120000-0x120FFF4096RAM Device Write, Sharedpalette, palette_device, write, palette
0x130000-0x1300078RAM, Sharedvctrl_0
0x140000-0x143FFF16384RAM Write, Sharedvram_0_w, vram_0
0x170000-0x170FFF4096RAM Write, Sharedvram_1_w, vram_1
0x171000-0x171FFF4096Writevram_1_w
0x180000-0x18FFFF65536RAM, Sharedspriteram
Memory Area:powerins_sound_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Read/Writeym2203, ym2203_device, read, write
0x00801Device Read/Writeoki1, okim6295_device, read, write
0x00881Device Read/Writeoki2, okim6295_device, read, write
0x0090-0x00978Device Writenmk112, nmk112_device, okibank_w
Memory Area:powerins_sound_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xDFFF8192RAM
0xE0001Device Readsoundlatch, generic_latch_8_device, read
 

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
0x0000-0xFFFFF104857693095-5.u16CRC(b1371808) (Fluke: F7F7)
0x100000-0x1FFFFF104857693095-6.u17CRC(29c85d80) (Fluke: C882)
0x200000-0x27FFFF52428893095-7.u18CRC(2dd76149) (Fluke: F804)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF13107293095-1.u15CRC(6a579ee0) (Fluke: C92C)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF104857693095-12.u116CRC(35f3c2a3) (Fluke: A03B)
0x100000-0x1FFFFF104857693095-13.u117CRC(1ebd45da) (Fluke: 4DD5)
0x200000-0x2FFFFF104857693095-14.u118CRC(760d871b) (Fluke: 6522)
0x300000-0x3FFFFF104857693095-15.u119CRC(d011be88) (Fluke: 9C40)
0x400000-0x4FFFFF104857693095-16.u120CRC(a9c16c9c) (Fluke: 1CB3)
0x500000-0x5FFFFF104857693095-17.u121CRC(51b57288) (Fluke: A762)
0x600000-0x6FFFFF104857693095-18.u122CRC(b135e3f2) (Fluke: ABBB)
0x700000-0x7FFFFF104857693095-19.u123CRC(67695537) (Fluke: 28D4)
Memory Area:oki1
Address RangeLengthLabel/LocationDescription
0x40000-0x13FFFF104857693095-10.u48CRC(329ac6c5) (Fluke: 4F45)
0x140000-0x23FFFF104857693095-11.u49CRC(75d6097c) (Fluke: 3161)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x40000-0x13FFFF104857693095-8.u46CRC(f019bedb) (Fluke: 9854)
0x140000-0x23FFFF104857693095-9.u47CRC(adc83765) (Fluke: B703)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F3222.u81CRC(67d5ec4b) (Fluke: 0243)
0x0020-0x011F25621.u71CRC(182cd81f) (Fluke: EDCE)
0x0100-0x01FF25620.u54CRC(38bd0e2f) (Fluke: A239)
Memory Area:soundcpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF13107293095-2.u90CRC(4b123cc6) (Fluke: 559E)
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