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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.
Panic Road (Seibu Kaihatsu (Taito license), 1986)
Memory Area:panicr_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192RAM, Sharedmainram
0x2000-0x3CFF7424RAM, Sharedspriteram (// how big is sprite ram, some places definitely have sprites at 3000+)
0x3D00-0x3FFF768RAM
0x8000-0xBFFF16384Readcollision_r
0xC000-0xCFFF4096RAM, Sharedtextram
0xD0001Device Writet5182, t5182_device, sound_irq_w
0xD0021Device Writet5182, t5182_device, sharedram_semaphore_main_acquire_w
0xD0041Device Readt5182, t5182_device, sharedram_semaphore_snd_r
0xD0061Device Writet5182, t5182_device, sharedram_semaphore_main_release_w
0xD200-0xD2FF256Read/Writet5182shared_r, t5182shared_w
0xD4001Read PortP1
0x0001P1 Left FlipperActive Low
0x0002P1 Right FlipperActive Low
0x0004P1 Left ShakeActive Low
0x0008P1 Right ShakeActive Low
0x00f0UnusedActive Low
0xD4021Read PortP2
0x0001P2 Left FlipperActive Low
0x0002P2 Right FlipperActive Low
0x0004P2 Left ShakeActive Low
0x0008P2 Right ShakeActive Low
0x00f0UnusedActive Low
0xD4041Read PortSTART
0x0008Start 1Active Low
0x0010Start 2Active Low
0x00e7UnknownActive Low
0xD4061Read PortDSW1
0x0007Coin_AActive High
0x00005C_1CActive High
0x00044C_1CActive High
0x00023C_1CActive High
0x00062C_1CActive High
0x00071C_1CActive High
0x00031C_2CActive High
0x00051C_3CActive High
0x00011C_5CActive High
0x0018Coin_BActive High
0x00102C_1CActive High
0x00181C_1CActive High
0x00002C_3CActive High
0x00081C_2CActive High
0x0040Allow_ContinueActive High
0x0040NoActive High
0x0000YesActive High
0x0080UnknownActive High
0x0080OffActive High
0x0000OnActive High
0xD4071Read PortDSW2
0x0001Demo_SoundsActive High
0x0001OffActive High
0x0000OnActive High
0x0006DifficultyActive High
0x0006EasyActive High
0x0004MediumActive High
0x0002HardActive High
0x0000HardestActive High
0x00185k 10kActive High
0x001010k 20kActive High
0x000820k 40kActive High
0x000050k 100kActive High
0x0060LivesActive High
0x00004Active High
0x00203Active High
0x00402Active High
0x00601Active High
0x0080CabinetActive High
0x0080UprightActive High
0x0000CocktailActive High
0xD8021Writescrollx_hi_w
0xD8041Writescrollx_lo_w
0xD80A1Writeoutput_w
0xD80C1Write Only, Sharedspritebank
0xD8181Write NOP(// watchdog?)
0xF0000-0xFFFFF65536ROM
 

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
0x0000-0x1FFF819213f.binCRC(4e6b3c04) (Fluke: EED5)
0x2000-0x3FFF819215f.binCRC(d735b572) (Fluke: BE4E)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF1310722a.binCRC(3ac0e5b4) (Fluke: 940E)
0x20000-0x3FFFF1310722b.binCRC(567d327b) (Fluke: 4862)
0x40000-0x5FFFF1310722c.binCRC(cd77ec79) (Fluke: B465)
0x60000-0x7FFFF1310722d.binCRC(218d2c3e) (Fluke: 4198)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF1310722j.binCRC(80f05923) (Fluke: 28C3)
0x20000-0x3FFFF1310722k.binCRC(35f07bca) (Fluke: F125)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256b.14cCRC(145d1e0d) (Fluke: FFBA)
0x0100-0x01FF256a.15cCRC(c75772bc) (Fluke: C8D9)
0x0200-0x02FF256c.13cCRC(11c11bbd) (Fluke: D253)
0x0300-0x03FF25612d.bprCRC(0df8aa3c) (Fluke: 1E76)
0x0400-0x04FF2568a.bprCRC(908684a6) (Fluke: 0587)
0x0500-0x05FF25610j.bprCRC(1dd80ee1) (Fluke: 5A5D)
0x0600-0x06FF256d.9bCRC(f99cac4b) (Fluke: 86B9)
0x0700-0x07FF25610l.bprCRC(f3f29695) (Fluke: 229F)
Memory Area:t5182_z80
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF3276822d.binCRC(eb1a46e1) (Fluke: D66B)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF163845d.binCRC(f3466906) (Fluke: 3466)
Memory Area:user2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF163847d.binCRC(8032c1e9) (Fluke: 8DC9)
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