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:dec8_mcu_io_map
Address RangeLengthFunctionDescription
0x00001Unknown
Memory Area:gondo_map
Address RangeLengthFunctionDescription
0x0000-0x17FF6144RAM
0x1800-0x1FFF2048RAM Write, Shareddec8_videoram_w, videoram
0x2000-0x27FF2048Read/Write, Shareddec8_bg_data_r, dec8_bg_data_w, bg_data
0x2800-0x2BFF1024RAM Device Write, Sharedpalette, palette_device, write, palette
0x2C00-0x2FFF1024RAM Device Write, Sharedpalette, palette_device, write_ext, palette_ext
0x3000-0x37FF2048RAM, Sharedspriteram (/* Sprites */)
0x38001Read PortDSW0 (/* Dip 1 */)
0x38011Read PortDSW1 (/* Dip 2 */)
0x380A-0x380B2Readgondo_player_1_r (/* Player 1 rotary */)
0x380C-0x380D2Readgondo_player_2_r (/* Player 2 rotary */)
0x380E1Read PortIN3 (/* VBL */)
0x380F1Read PortIN2 (/* Fire buttons */)
0x38101Writedec8_sound_w
0x3818-0x382F24Writegondo_scroll_w
0x38301Writeghostb_bank_w (/* Bank + NMI enable */)
0x38381Readi8751_h_r
0x38391Readi8751_l_r
0x383A-0x383B2Writedec8_i8751_w
0x4000-0x7FFF16384ROM Bankbank1
0x8000-0xFFFF32768ROM
Memory Area:oscar_s_map
Address RangeLengthFunctionDescription
0x0000-0x05FF1536RAM
0x2000-0x20012Device Writeym1, ym2203_device, write
0x4000-0x40012Device Writeym2, ym3526_device, write
0x60001Device Readsoundlatch, generic_latch_8_device, read
0x8000-0xFFFF32768ROM
 

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
0x8000-0xFFFF32768ds05.h5CRC(e6e28ca9) (Fluke: C018)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768ds14.b18CRC(00cbe9c8) (Fluke: 77D1)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536dt-19.512CRC(da2abe4b) (Fluke: C8C9)
0x10000-0x17FFF32768ds20.f15CRC(0eef7f56) (Fluke: D0F5)
0x20000-0x2FFFF65536dt-16.512CRC(e9955d8f) (Fluke: D851)
0x30000-0x37FFF32768ds18.f12CRC(2b2d1468) (Fluke: E959)
0x40000-0x4FFFF65536dt-15.512CRC(a54b2eb6) (Fluke: 2B63)
0x50000-0x57FFF32768ds17.f11CRC(75ae349a) (Fluke: FABD)
0x60000-0x6FFFF65536dt-21.512CRC(1c5f682d) (Fluke: 4621)
0x70000-0x77FFF32768ds22.f18CRC(c8ffb148) (Fluke: 0859)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768dt-08.512CRC(aec483f5) (Fluke: 8AD8)
0x8000-0xFFFF32768dt-09.256CRC(446f0ce0) (Fluke: F7CB)
0x20000-0x27FFF32768dt-06.512CRC(3fe1527f) (Fluke: E2AE)
0x28000-0x2FFFF32768dt-07.256CRC(61f9bce5) (Fluke: EE13)
0x40000-0x47FFF32768dt-12.512CRC(1a72ca8d) (Fluke: 7D55)
0x48000-0x4FFFF32768dt-13.256CRC(ccb81aec) (Fluke: 6BFB)
0x60000-0x67FFF32768dt-10.512CRC(cfcfc9ed) (Fluke: 2B97)
0x68000-0x6FFFF32768dt-11.256CRC(53e9cf17) (Fluke: 3E36)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x8000-0xFFFF32768ds00.f3CRC(33bb16fe) (Fluke: 1267)
0x10000-0x1FFFF65536dt-01.512CRC(c39bb877) (Fluke: 1C0C)
0x20000-0x2FFFF65536ds02.f6CRC(925307a4) (Fluke: 489B)
0x30000-0x3FFFF65536ds03.f7CRC(9c0fcbf6) (Fluke: BC85)
Memory Area:mcu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096ds-a.b1BAD_DUMP CRC(f61b77cf)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0103260pal16r4nc.u10PAL is read protected
0x0200-0x0303260pal16r4nc.g11PAL is read protected
0x0400-0x0503260pal16r4nc.s1PAL is read protected
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024ds-23.b10CRC(dcbfec4e),BPROM type MB7122E for Priority (Not yet used) (Fluke: 6D12)
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