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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.
The Great Ragtime Show (Data East Corporation, 1992)
Memory Area:audio_map
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM
0x100000-0x1000012Read/Write NOP
0x110000-0x1100012Device Read/Writeymsnd, ym2151_device, read, write
0x120000-0x1200012Device Read/Writeoki1, okim6295_device, read, write
0x130000-0x1300012Device Read/Writeoki2, okim6295_device, read, write
0x140000-0x1400012Device Readsoundlatch, generic_latch_8_device, read
0x1F0000-0x1F1FFF8192RAM Bankbank8
0x1FEC00-0x1FEC012Device Writeaudiocpu, h6280_device, timer_w
0x1FF400-0x1FF4034Device Writeaudiocpu, h6280_device, irq_status_w
Memory Area:boogwing_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM
0x200000-0x20FFFF65536RAM
0x220000-0x2200012Device Writedeco_common, decocomn_device, priority_w
0x220002-0x22000F14Read/Write NOP
0x240000-0x2400012Device Writespriteram, buffered_spriteram16_device, write
0x242000-0x2427FF2048RAM, Sharedspriteram
0x244000-0x2440012Device Writespriteram2, buffered_spriteram16_device, write
0x246000-0x2467FF2048RAM, Sharedspriteram2
0x24E000-0x24EFFF4096Read/Write, Sharedboogwing_protection_region_0_104_r,boogwing_protection_region_0_104_w, prot16ram (/* Protection device */)
0x260000-0x26000F16Device Writetilegen1, deco16ic_device, pf_control_w
0x264000-0x265FFF8192Device Read/Writetilegen1, deco16ic_device, pf1_data_r, pf1_data_w
0x266000-0x267FFF8192Device Read/Writetilegen1, deco16ic_device, pf2_data_r, pf2_data_w
0x268000-0x268FFF4096RAM, Sharedpf1_rowscroll
0x26A000-0x26AFFF4096RAM, Sharedpf2_rowscroll
0x270000-0x27000F16Device Writetilegen2, deco16ic_device, pf_control_w
0x274000-0x275FFF8192RAM Device Writetilegen2, deco16ic_device, pf1_data_w
0x276000-0x277FFF8192RAM Device Writetilegen2, deco16ic_device, pf2_data_w
0x278000-0x278FFF4096RAM, Sharedpf3_rowscroll
0x27A000-0x27AFFF4096RAM, Sharedpf4_rowscroll
0x280000-0x28000F16Read/Write NOP(// ?)
0x282000-0x2820012Read/Write NOP(// Palette setup?)
0x282008-0x2820092Device Writedeco_common, decocomn_device, palette_dma_w
0x284000-0x285FFF8192Device Write, Shareddeco_common, decocomn_device, buffered_palette_w, paletteram
0x3C0000-0x3C004F80RAM(// ?)
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536km06.18pCRC(3e8bc4e1) (Fluke: 8D88)
0x0000-0xFFFF65536km06.18pCRC(3e8bc4e1) (Fluke: 8D88)
Memory Area:oki1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288mbd-10.17pCRC(f159f76a) (Fluke: 6670)
0x0000-0x7FFFF524288mbd-10.17pCRC(f159f76a) (Fluke: 6670)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288mbd-09.16pCRC(f44f2f87) (Fluke: F19D)
0x0000-0x7FFFF524288mbd-09.16pCRC(f44f2f87) (Fluke: F19D)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024kj-00.15nCRC(add4d50b) (Fluke: D10A)
0x0000-0x03FF1024kj-00.15nCRC(add4d50b) (Fluke: D10A)
Memory Area:tiles2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576mbd-01.9bCRC(d7de4f4b) (Fluke: 9B96)
0x0000-0xFFFFF1048576mbd-01.9bCRC(d7de4f4b) (Fluke: 9B96)
0x100000-0x1FFFFF1048576mbd-00.8bCRC(adb20ba9) (Fluke: 8610)
0x100000-0x1FFFFF1048576mbd-00.8bCRC(adb20ba9) (Fluke: 8610)
Memory Area:tiles3
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576mbd-03.13bCRC(cf798f2c) (Fluke: 15AC)
0x0000-0xFFFFF1048576mbd-03.13bCRC(cf798f2c) (Fluke: 15AC)
0x100000-0x1FFFFF1048576mbd-04.14bCRC(d9764d0b) (Fluke: 7548)
0x100000-0x1FFFFF1048576mbd-04.14bCRC(d9764d0b) (Fluke: 7548)
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