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.
Memory Area:skilldrp_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x200000-0x200FFF4096RAM, Sharedspriteram
0x202000-0x2020012Writeastrocorp_draw_sprites_w
0x204000-0x2040012Read PortINPUTS
0x208000-0x2080012Writeastrocorp_eeprom_w
0x20A000-0x20A0012Writeskilldrp_outputs_w
0x20E000-0x20E0012Read PortEEPROMIN
0x380000-0x3801FF512RAM Device Write, Sharedpalette, palette_device, write, palette
0x400000-0x4000012Writeastrocorp_screen_enable_w
0x500000-0x507FFF32768RAM, Sharednvram (// battery)
0x580000-0x5800012Writeskilldrp_sound_bank_w
0x600000-0x6000012Device Read/Write 8-bitoki, okim6295_device, read, write, 0x00ff
 

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:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288dd_rom5.u33CRC(482e456a)
0x0000-0x007F12893c46.u10CRC(6769bfb8)
Memory Area:sprites
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152dd_rom3.u26CRC(47c95b43)
0x200000-0x3FFFFF2097152dd_rom4.u24CRC(2cf4be21)
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