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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.
Bonus Chance (Wing Co., Ltd., 1990)
Memory Area:bonusch_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM(// ok)
0xD800-0xDFFF2048RAM(//AM_SHARE("nvram"))
0xE000-0xE7FF2048RAM Write, Sharedgoldstar_fg_vidram_w, fg_vidram
0xE800-0xEFFF2048RAM Write, Sharedgoldstar_fg_atrram_w, fg_atrram
0xF000-0xFFFF4096RAM
0xF000-0xF1FF512RAM Write, Sharedgoldstar_reel1_ram_w, reel1_ram
0xF200-0xF3FF512RAM Write, Sharedgoldstar_reel2_ram_w, reel2_ram
0xF400-0xF5FF512RAM Write, Sharedgoldstar_reel3_ram_w, reel3_ram
0xF640-0xF67F64RAM, Sharedreel1_scroll
0xF680-0xF6BF64RAM, Sharedreel2_scroll
0xF700-0xF73F64RAM, Sharedreel3_scroll
0xF800-0xF9FF512RAM Write, Sharedreel1_attrram_w, reel1_attrram
0xFA00-0xFBFF512RAM Write, Sharedreel2_attrram_w, reel2_attrram
0xFC00-0xFDFF512RAM Write, Sharedreel3_attrram_w, reel3_attrram
Memory Area:bonusch_portmap
Address RangeLengthFunctionDescription
0x00101Read PortIN0
0x0001IN0-1Active Low
0x0002IN0-2Active Low
0x0004IN0-3Active Low
0x0008IN0-4Active Low
0x0010IN0-5Active Low
0x0020IN0-6Active Low
0x0040IN0-7Active Low
0x0080IN0-8Active Low
0x00201Read PortIN1
0x0001IN1-1Active Low
0x0002IN1-2Active Low
0x0004IN1-3Active Low
0x0008IN1-4Active Low
0x0010IN1-5Active Low
0x0020IN1-6Active Low
0x0040IN1-7Active Low
0x0080IN1-8Active Low
0x00501Device Writesn1, sn76489_device, write (/* SN76489 #1 */)
0x00511Device Writesn2, sn76489_device, write (/* SN76489 #2 */)
0x00521Device Writesn3, sn76489_device, write (/* SN76489 #3 */)
0x00531Device Writesn4, sn76489_device, write (/* SN76489 #4 */)
0x00601Read PortIN3
0x0001IN3-1Active Low
0x0002IN3-2Active Low
0x0004IN3-3Active Low
0x0008IN3-4Active Low
0x0010IN3-5Active Low
0x0020IN3-6Active Low
0x0040IN3-7Active Low
0x0080IN3-8Active Low
 

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
0x0000-0xFFFF655361.1cCRC(33ce67c0)
0x10000-0x1FFFF655362.1eCRC(fc394767)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF655363.1mCRC(2acac012)
0x10000-0x1FFFF655364.1pCRC(530bdec2)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF6553610.1uCRC(5098eba6)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256tbp24s10.3eCRC(f8d160c5)
0x0100-0x01FF256tbp24s10.3fCRC(bbc03eb2)
0x0200-0x02FF256tbp24s10.3hCRC(77b2585d)
Memory Area:proms2
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256tbp24s10.4eCRC(06fa2649)
0x0100-0x01FF256tbp24s10.4fCRC(38000593)
0x0200-0x02FF256tbp24s10.4hCRC(cbf0062d)
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