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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.
Mission 660 (bootleg, 1986)
Memory Area:m660_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xCFFF4096RAM
0xD8031Readm660_unknown_d803_r
0xD8061Readunknown_d806_r
0xD9001Readunknown_d900_r
0xD9381Readunknown_d938_r
0xE000-0xE3FF1024RAM Write, Sharedfg_videoram_w, videoram
0xE400-0xE43F64RAM Write, Sharedfg_colorram_w, colorram
0xE440-0xE7FF960RAM
0xE800-0xEFFF2048RAM Write, Sharedbg_videoram_w, bg_videoram
0xF000-0xF3FF1024RAM, Sharedspriteram
0xF4001Write NOP(/* This is always written with F401, F402 & F403 data */)
0xF4011Writem660_sound_command3_w
0xF4021Writesound_command2_w
0xF4031Writesound_command1_w
0xF8001Read PortP1
0xF8011Read Port, WriteP2, bgcolor_w
0xF8021Read Port, WriteSYSTEM, scrolly_w
0xF8031Writescrollx_w
0xF8041Read PortDSW1
0xF8051Read PortDSW2
0xFC001Writeflip_screen_w
0xFC011Writenmi_enable_w
0xFC021Writetextbank1_w
0xFC03-0xFC042Writecoincounter_w
0xFC071Writem660_textbank2_w (/* Mission 660 uses a bit here */)
Memory Area:sound1_m660_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x8000-0x87FF2048RAM
0xC0001Readsound_command1_r
0xC0011Write NOP(/* ? - probably clear IRQ */)
0xC0021Device Writedac1, dac_byte_interface, write
Memory Area:sound2_m660_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x8000-0x87FF2048RAM
0xC0001Readsound_command2_r
0xC0011Write NOP(/* ? - probably clear IRQ */)
0xC0021Device Writedac2, dac_byte_interface, write
Memory Area:sound3_m660_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Writeaysnd, ay8910_device, address_data_w
Memory Area:sound3_m660_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM
0xC0001Readm660_sound_command3_r
0xC0011Write NOP(/* ? - probably clear IRQ */)
0xFFFC-0xFFFF4RAM(/* CPU writes here - music data */)
Memory Area:z80_m660_io_map
Address RangeLengthFunctionDescription
0x00001Write NOP(/* ? */)
0x00011Write NOP(/* Written continuously. Increments with level. */)
0x00021Write NOP(/* Always follows above with 0x01 data */)
 

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:audio2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF1638413.4jCRC(fba51cf7) (Fluke: 1E19)
Memory Area:audio3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768660x.binCRC(b82f0cfa) (Fluke: 8F6B)
Memory Area:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF1638414.4nCRC(5734db5a) (Fluke: F760)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF163844.7kCRC(e24e431a) (Fluke: 6F49)
0x4000-0x7FFF163845.6kCRC(b2c93d46) (Fluke: 487B)
0x8000-0xBFFF163846.5kCRC(763c5983) (Fluke: 6989)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192m660-10.binCRC(b11405a6) (Fluke: 10E0)
0x2000-0x3FFF8192b.16kCRC(94b8b69f) (Fluke: 06B9)
0x4000-0x5FFF8192c.16mCRC(d6768c68) (Fluke: 10C2)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF163847.15eCRC(990c0cee) (Fluke: F632)
0x4000-0x7FFF163848.15dCRC(d9aa7834) (Fluke: F63A)
0x8000-0xBFFF163849.15bCRC(27b26905) (Fluke: B291)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384m660-1.binCRC(18f6c4be) (Fluke: 5B11)
0x4000-0x7FFF163842.3dCRC(e6661504) (Fluke: B686)
0x8000-0xBFFF163843.3fCRC(3a389ccd) (Fluke: B49B)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF2564r.bprCRC(cd16d0f1) (Fluke: 3869)
0x0100-0x01FF2564p.bprCRC(22e8b22c) (Fluke: 17B9)
0x0200-0x02FF2565r.bprCRC(b7d6fdb5) (Fluke: 94B6)
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