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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.
Avenging Spirit (Jaleco, 1991)
Memory Area:megasys1A_map
Address RangeLengthFunctionDescription
0x80008-0x800092Device Readsoundlatch2, generic_latch_16_device, read (/* from sound cpu */)
0x84000-0x840012Writeactive_layers_w
0x84008-0x8400D6Device Writescroll2, megasys1_tilemap_device, scroll_w
0x84100-0x841012Read/Writesprite_flag_r, sprite_flag_w
0x84308-0x843092Writesoundlatch_w
0x98000-0x9BFFF16384RAM Device Write, Sharedscroll2, megasys1_tilemap_device, write, scroll2
Memory Area:megasys1A_sound_map
Address RangeLengthFunctionDescription
0x0000-0x1FFFF131072ROM
0x40000-0x400012Device Readsoundlatch, generic_latch_16_device, read
0x60000-0x600012Device Writesoundlatch2, generic_latch_16_device, write (// to main cpu)
0x80000-0x800034Device Read/Write 8-bitymsnd, ym2151_device, read, write, 0x00ff
0xA0000-0xA00034Device Write 8-bitoki1, okim6295_device, write, 0x00ff
0xA0000-0xA00012Read 8-bitoki_status_1_r, 0x00ff
0xC0000-0xC00012Read 8-bitoki_status_2_r, 0x00ff
0xC0000-0xC00034Device Write 8-bitoki2, okim6295_device, write, 0x00ff
0xE0000-0xFFFFF131072RAM
Memory Area:megasys1B_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x44000-0x440012Writeactive_layers_w
0x44008-0x4400D6Device Writescroll2, megasys1_tilemap_device, scroll_w
0x44100-0x441012Read/Writesprite_flag_r, sprite_flag_w
0x44200-0x442056Device Writescroll0, megasys1_tilemap_device, scroll_w
0x44208-0x4420D6Device Writescroll1, megasys1_tilemap_device, scroll_w
0x44300-0x443012Writescreen_flag_w
0x44308-0x443092Writesoundlatch_w
0x48000-0x487FF2048RAM Device Write, Sharedpalette, palette_device, write, palette
0x4E000-0x4FFFF8192RAM, Sharedobjectram
0x50000-0x53FFF16384RAM Device Write, Sharedscroll0, megasys1_tilemap_device, write, scroll0
0x54000-0x57FFF16384RAM Device Write, Sharedscroll1, megasys1_tilemap_device, write, scroll1
0x58000-0x5BFFF16384RAM Device Write, Sharedscroll2, megasys1_tilemap_device, write, scroll2
0x60000-0x7FFFF131072RAM Write, Sharedram_w, ram
0x80000-0xBFFFF262144ROM
0xE0000-0xE00012Read/Writeip_select_r,ip_select_w
Memory Area:megasys1B_sound_map
Address RangeLengthFunctionDescription
0x0000-0x1FFFF131072ROM
0x40000-0x400012Device Read, Device Writesoundlatch, generic_latch_16_device, read, soundlatch2, generic_latch_16_device, write (/* from/to main cpu */)
0x60000-0x600012Device Read, Device Writesoundlatch, generic_latch_16_device, read, soundlatch2, generic_latch_16_device, write (/* from/to main cpu */)
0x80000-0x800034Device Read/Write 8-bitymsnd, ym2151_device, read, write, 0x00ff
0xA0000-0xA00034Device Write 8-bitoki1, okim6295_device, write, 0x00ff
0xA0000-0xA00012Read 8-bitoki_status_1_r, 0x00ff
0xC0000-0xC00012Read 8-bitoki_status_2_r, 0x00ff
0xC0000-0xC00034Device Write 8-bitoki2, okim6295_device, write, 0x00ff
0xE0000-0xEFFFF65536RAM
Memory Area:megasys1Z_map
Address RangeLengthFunctionDescription
0x0000-0x5FFFF393216ROM
0x80000-0x800012Read PortSYSTEM
0x80002-0x800032Read PortP1
0x80004-0x800052Read PortP2
0x80006-0x800072Read PortDSW
0x84200-0x842056Device Writescroll0, megasys1_tilemap_device, scroll_w
0x84208-0x8420D6Device Writescroll1, megasys1_tilemap_device, scroll_w
0x84300-0x843012Writescreen_flag_w
0x84308-0x843092Writesoundlatch_z_w
0x88000-0x887FF2048RAM Device Write, Sharedpalette, palette_device, write, palette
0x8E000-0x8FFFF8192RAM, Sharedobjectram
0x90000-0x93FFF16384RAM Device Write, Sharedscroll0, megasys1_tilemap_device, write, scroll0
0x94000-0x97FFF16384RAM Device Write, Sharedscroll1, megasys1_tilemap_device, write, scroll1
0xF0000-0xFFFFF65536RAM Write, Sharedram_w, ram
 

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:mcu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096m50747
Memory Area:oki1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144spirit14.romCRC(13be9979) (Fluke: DE9E)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144spirit13.romCRC(05bc04d9) (Fluke: 8301)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512ph.binCRC(8359650a) (Fluke: 1EF9)
Memory Area:scroll0
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288spirit12.romCRC(728335d4) (Fluke: 317C)
Memory Area:scroll1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288spirit11.romCRC(7896f6b0) (Fluke: FC57)
Memory Area:scroll2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072spirit09.romCRC(0c37edf7) (Fluke: F697)
Memory Area:sprites
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288spirit10.romCRC(2b1180b3) (Fluke: D46F)
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