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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.
Perfect Billiard (Nihon System, 1987)
Memory Area:pbillrd_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankbank1
0xC000-0xCFFF4096RAM
0xD000-0xD7FF2048RAM Write, Sharedfreek_videoram_w, videoram
0xD800-0xD8FF256RAM, Sharedspriteram
0xD900-0xDFFF1792RAM
0xE0001Read PortIN0
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004Joystick RightActive Low
0x0008Joystick LeftActive Low
0x0010Joystick DownActive Low
0x0020Joystick UpActive Low
0x0040Start 1Active Low
0x0080Coin 1Active Low
0xE000-0xE0012Writeflipscreen_xy_w
0xE002-0xE0032Writecoin_w
0xE0041Writenmi_enable_w
0xE8001Read PortIN1
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004Joystick RightActive Low
0x0008Joystick LeftActive Low
0x0010Joystick DownActive Low
0x0020Joystick UpActive Low
0x0040Start 2Active Low
0x0080Coin 2Active Low
0xF0001Read Port, WriteDSW1, pbillrd_bankswitch_w
0x00013Active High
0x00005Active High
0x000610000, 30000 & 50000 PointsActive High
0x000220000 & 60000 PointsActive High
0x000430000 & 80000 PointsActive High
0x0000Only 20000 PointsActive High
0x0010Allow_ContinueActive High
0x0000NoActive High
0x0010YesActive High
0x00002Active High
0x00203Active High
0x0040CabinetActive High
0x0000UprightActive High
0x0040CocktailActive High
0x0080Flip_ScreenActive High
0x0000OffActive High
0x0080OnActive High
0xF8001Read PortDSW2
0x000fCoin_AActive High
0x00005C_1CActive High
0x000c4C_1CActive High
0x000e3C_1CActive High
0x00052C_1CActive High
0x00063C_2CActive High
0x00044C_3CActive High
0x000f1C_1CActive High
0x00084C_5CActive High
0x000a3C_4CActive High
0x00092C_3CActive High
0x00023 Coins/5 CreditsActive High
0x00071C_2CActive High
0x00012C_5CActive High
0x000b1C_3CActive High
0x00031C_4CActive High
0x000d1C_5CActive High
0x00f0Coin_BActive High
0x00005C_1CActive High
0x00c04C_1CActive High
0x00e03C_1CActive High
0x00502C_1CActive High
0x00603C_2CActive High
0x00404C_3CActive High
0x00f01C_1CActive High
0x00804C_5CActive High
0x00a03C_4CActive High
0x00902C_3CActive High
0x00203 Coins/5 CreditsActive High
0x00701C_2CActive High
0x00102C_5CActive High
0x00b01C_3CActive High
0x00301C_4CActive High
0x00d01C_5CActive High
0xFC001Device Writesn1, sn76489a_device, write
0xFC011Device Writesn2, sn76489a_device, write
0xFC021Device Writesn3, sn76489a_device, write
0xFC031Device Writesn4, sn76489a_device, 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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384pb.4CRC(2f4d4dd3) (Fluke: 6747)
0x0000-0x3FFF16384pb.4CRC(2f4d4dd3) (Fluke: 6747)
0x4000-0x7FFF16384pb.5CRC(9dfccbd3) (Fluke: 0385)
0x4000-0x7FFF16384pb.5CRC(9dfccbd3) (Fluke: 0385)
0x8000-0xBFFF16384pb.6CRC(b5c3f6f6) (Fluke: 1DDA)
0x8000-0xBFFF16384pb.6CRC(b5c3f6f6) (Fluke: 1DDA)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF819210619.3rCRC(3296b9d9) (Fluke: B71E)
0x0000-0x1FFF819210619.3rCRC(3296b9d9) (Fluke: B71E)
0x2000-0x3FFF819210621.3mCRC(3dca8e4b) (Fluke: 11D5)
0x2000-0x3FFF819210621.3mCRC(3dca8e4b) (Fluke: 11D5)
0x4000-0x5FFF819210620.3nCRC(ee76b079) (Fluke: 6BB6)
0x4000-0x5FFF819210620.3nCRC(ee76b079) (Fluke: 6BB6)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384pb.18CRC(9e6275ac) (Fluke: 80E5)
0x4000-0xBFFF32768pb.7CRC(dd438431) (Fluke: 967F)
0xC000-0xFFFF16384pb.9CRC(089ce80a) (Fluke: 8689)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF25682s129.3aCRC(44802169) (Fluke: 76D8)
0x0000-0x00FF25682s129.3aCRC(44802169) (Fluke: 76D8)
0x0000-0x00FF25682s129.3aCRC(44802169) (Fluke: 76D8)
0x0100-0x01FF25682s129.4dCRC(69ca07cc) (Fluke: 55)
0x0100-0x01FF25682s129.4dCRC(69ca07cc) (Fluke: 55)
0x0100-0x01FF25682s129.4dCRC(69ca07cc) (Fluke: 55)
0x0200-0x02FF25682s129.4aCRC(145f950a) (Fluke: 3658)
0x0200-0x02FF25682s129.4aCRC(145f950a) (Fluke: 3658)
0x0200-0x02FF25682s129.4aCRC(145f950a) (Fluke: 3658)
0x0300-0x03FF25682s129.3dCRC(43d24e17) (Fluke: A20F)
0x0300-0x03FF25682s129.3dCRC(43d24e17) (Fluke: A20F)
0x0300-0x03FF25682s129.3dCRC(43d24e17) (Fluke: A20F)
0x0400-0x04FF25682s129.3bCRC(7fdc872c) (Fluke: 2887)
0x0400-0x04FF25682s129.3bCRC(7fdc872c) (Fluke: 2887)
0x0400-0x04FF25682s129.3bCRC(7fdc872c) (Fluke: 2887)
0x0500-0x05FF25682s129.3cCRC(cc1657e5) (Fluke: 2D4A)
0x0500-0x05FF25682s129.3cCRC(cc1657e5) (Fluke: 2D4A)
0x0500-0x05FF25682s129.3cCRC(cc1657e5) (Fluke: 2D4A)
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