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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.
Pontoon (Tehkan, 1985)
Memory Area:lvcards_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Writeaysnd, ay8910_device, data_address_w
0x00001Device Readaysnd, ay8910_device, data_r
Memory Area:lvcards_map
Address RangeLengthFunctionDescription
0x0000-0x5FFF24576ROM
0x6000-0x67FF2048RAM, Sharednvram
0x9000-0x93FF1024RAM Write, Sharedlvcards_videoram_w, videoram
0x9400-0x97FF1024RAM Write, Sharedlvcards_colorram_w, colorram
0xA0001Read PortIN0
0x0002Service 1Active Low
0x0004Reset AllActive Low
0x0008Clear StatsActive Low
0x0010Call AttendantActive Low
0x0020Hopper ResetActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0xA0011Read Port, Write NOPIN1,
0x0001UnusedActive Low
0x0002UnusedActive Low
0x0004UnusedActive Low
0x0008Bonus GameActive Low
0x0010StandActive Low
0x0020HitActive Low
0x0040Use CreditActive Low
0x0080Remove Credit as coinsActive Low
0xA0021Read Port, Write NOPIN2,
0x0001SpecialActive Low
0x0002UnusedActive Low
0x0004Coin 2Active Low
0x0008Coin 1Active Low
0x0010Coin 3Active Low
0x0020SpecialActive High
0x0040Coinout SensorActive High
0x0080SpecialActive Low
0xC000-0xDFFF8192ROM
Memory Area:ponttehk_map
Address RangeLengthFunctionDescription
0x0000-0x5FFF24576ROM
0x6000-0x67FF2048RAM, Sharednvram
0x8000-0x83FF1024RAM Write, Sharedlvcards_videoram_w, videoram
0x8400-0x87FF1024RAM Write, Sharedlvcards_colorram_w, colorram
0xA0001Read PortIN0
0x0002Service 1Active Low
0x0004Reset AllActive Low
0x0008Clear StatsActive Low
0x0010Call AttendantActive Low
0x0020Hopper ResetActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0xA0011Read Port, Write NOPIN1, (// lamps)
0x0001UnusedActive Low
0x0002UnusedActive Low
0x0004UnusedActive Low
0x0008Bonus GameActive Low
0x0010StandActive Low
0x0020HitActive Low
0x0040Use CreditActive Low
0x0080Remove Credit as coinsActive Low
0xA0021Read, Writepayout_r, control_port_2a_w (//AM_WRITENOP // ???)
 

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
0x0000-0x1FFF8192ponttehk.003CRC(a6a91b3d) (Fluke: 082B)
0x2000-0x3FFF8192ponttehk.004CRC(976ed924) (Fluke: EB22)
0x4000-0x5FFF8192ponttehk.005CRC(2b8e8ca7) (Fluke: 9918)
0x6000-0x7FFF8192ponttehk.006CRC(6bc23965) (Fluke: 4424)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384ponttehk.001CRC(1f8c1b38) (Fluke: 8449)
0x4000-0x5FFF8192ponttehk.002CRC(befb4f48) (Fluke: A0E2)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256pon24s10.003CRC(4623b7f3),red component (Fluke: 82EA)
0x0100-0x01FF256pon24s10.002CRC(117e1b67),green component (Fluke: 04F6)
0x0200-0x02FF256pon24s10.001CRC(c64ecee8),blue component (Fluke: 8750)
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