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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.
Space Invaders DX (Taito Corporation, 1994)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x7FFF16384ROM Bankbank1
0xC000-0xDFFF8192RAM
0xE000-0xE0034Device Read/Writeymsnd, ym2610_device, read, write
0xE2001Read NOP, Device Writetc0140syt, tc0140syt_device, slave_port_w
0xE2011Device Read/Writetc0140syt, tc0140syt_device, slave_comm_r, slave_comm_w
0xE400-0xE4034Write NOP(/* pan */)
0xE6001Write NOP(/* ? */)
0xEA001Read NOP
0xEE001Write NOP(/* ? */)
0xF0001Write NOP(/* ? */)
0xF2001Writebankswitch_w
Memory Area:spacedx_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x500000-0x50000F16Read, Device Writepbobble_input_bypass_r, tc0640fio, tc0640fio_device, halfword_byteswap_w
0x500024-0x5000252Read PortP3_P4_A
0x500026-0x5000272Read/Writeeep_latch_r, eeprom_w
0x500028-0x5000292Writeplayer_34_coin_ctrl_w (/* simply locks coins 3&4 out */)
0x50002E-0x50002F2Read PortP3_P4_B
0x600000-0x6000034Writegain_control_w
0x700000-0x7000012Read NOP, Device Write 8-bittc0140syt, tc0140syt_device, master_port_w, 0xff00
0x700002-0x7000032Device Read/Write 8-bittc0140syt, tc0140syt_device, master_comm_r, master_comm_w, 0xff00
0x800000-0x801FFF8192RAM Device Write, Sharedpalette, palette_device, write, palette
0x900000-0x90FFFF65536RAM(/* Main 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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536d89-07.27CRC(bd743401) (Fluke: D45C)
0x0000-0xFFFF65536d89-07.27CRC(bd743401) (Fluke: D45C)
0x0000-0xFFFF65536d89-07.27CRC(bd743401) (Fluke: D45C)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288d89-02.14CRC(c36544b9) (Fluke: 469B)
0x0000-0x7FFFF524288d89-02.14CRC(c36544b9) (Fluke: 469B)
0x80000-0xFFFFF524288d89-01.9CRC(fffa0660) (Fluke: 323A)
0x80000-0xFFFFF524288d89-01.9CRC(fffa0660) (Fluke: 323A)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0103260pal16l8-d72-05.ic37CRC(c3d4cb7e),Matches D72-05 in qzshowby (Fluke: 07A5)
0x0000-0x0103260pal16l8-d72-05.ic37CRC(c3d4cb7e),Matches D72-05 in qzshowby (Fluke: 07A5)
0x0200-0x0303260pal16l8-d72-06.ic50CRC(e96b7f37),Differs from D72-06 in qzshowby (Fluke: 2888)
0x0200-0x0303260pal16l8-d72-06.ic50CRC(e96b7f37),Differs from D72-06 in qzshowby (Fluke: 2888)
0x0400-0x0556343palce20v8-d72-07.ic28CRC(6359e64c),Matches D72-07 in qzshowby (Fluke: 4EE2)
0x0400-0x0556343palce20v8-d72-07.ic28CRC(6359e64c),Matches D72-07 in qzshowby (Fluke: 4EE2)
0x0600-0x0756343palce20v8-d72-09.ic47CRC(de1760fd),Differs from D72-09 in qzshowby (Fluke: B228)
0x0600-0x0756343palce20v8-d72-09.ic47CRC(de1760fd),Differs from D72-09 in qzshowby (Fluke: B228)
0x0800-0x0916279palce16v8-d72-10.ic12CRC(a5181ba2),Matches D72-10 in qzshowby (Fluke: 676A)
0x0800-0x0916279palce16v8-d72-10.ic12CRC(a5181ba2),Matches D72-10 in qzshowby (Fluke: 676A)
0x0A00-0x0B43324pal20l8b-d89-04.ic40PAL is read protected
0x0A00-0x0B43324pal20l8b-d89-04.ic40PAL is read protected
Memory Area:ymsnd
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288d89-03.15CRC(218f31a4) (Fluke: 81FC)
0x0000-0x7FFFF524288d89-03.15CRC(218f31a4) (Fluke: 81FC)
0x0000-0x7FFFF524288d89-03.15CRC(218f31a4) (Fluke: 81FC)
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