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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.
Son Son (Capcom, 1984)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096RAM
0x1000-0x13FF1024RAM Write, Sharedsonson_videoram_w, videoram
0x1400-0x17FF1024RAM Write, Sharedsonson_colorram_w, colorram
0x2020-0x207F96RAM, Sharedspriteram
0x30001Writesonson_scrollx_w
0x30021Read PortP1
0x0001Button 1Active Low
0x0002UnknownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Joystick UpActive Low
0x0020Joystick DownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x30031Read PortP2
0x0001Button 1Active Low
0x0002UnknownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Joystick UpActive Low
0x0020Joystick DownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x30041Read PortSYSTEM
0x0001Start 1Active Low
0x0002Start 2Active Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010Coin 1Active Low
0x0020Coin 2Active Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x30051Read PortDSW1
0x000fCoinageActive High
0x00024C_1CActive High
0x00053C_1CActive High
0x00082C_1CActive High
0x00043C_2CActive High
0x00014C_3CActive High
0x000f1C_1CActive High
0x00033C_4CActive High
0x00072C_3CActive High
0x000e1C_2CActive High
0x00062C_5CActive High
0x000d1C_3CActive High
0x000c1C_4CActive High
0x000b1C_5CActive High
0x000a1C_6CActive High
0x00091C_7CActive High
0x0000Free_PlayActive High
0x0010Coin_AActive High
0x0000Coin_BActive High
0x0020Demo_SoundsActive High
0x0020OffActive High
0x0000OnActive High
0x0080Flip_ScreenActive High
0x0080OffActive High
0x0000OnActive High
0x30061Read PortDSW2
0x0003LivesActive High
0x00033Active High
0x00024Active High
0x00015Active High
0x00007Active High
0x00041 CreditActive High
0x00002 CreditsActive High
0x0018Bonus_LifeActive High
0x000820000 80000 100000Active High
0x000030000 90000 120000Active High
0x001820000Active High
0x001030000Active High
0x0060DifficultyActive High
0x0060EasyActive High
0x0040NormalActive High
0x0020HardActive High
0x0000Very_HardActive High
0x0080OffActive High
0x0000OnActive High
0x30081Write NOP(// might be Y scroll, but the game always sets it to 0)
0x30101Device Writesoundlatch, generic_latch_8_device, write
0x30181Writesonson_flipscreen_w
0x30191Writesonson_sh_irqtrigger_w
0x301E1Writesonson_coin2_counter_w
0x301F1Writesonson_coin1_counter_w
0x4000-0xFFFF49152ROM
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM
0x2000-0x20012Device Writeay1, ay8910_device, address_data_w
0x4000-0x40012Device Writeay2, ay8910_device, address_data_w
0xA0001Device Readsoundlatch, generic_latch_8_device, read
0xE000-0xFFFF8192ROM
 

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
0xE000-0xFFFF8192ss_6.c11CRC(1135c48a) (Fluke: 588B)
0xE000-0xFFFF8192ss_6.c11CRC(1135c48a) (Fluke: 588B)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192ss_7.b6CRC(990890b1),characters (Fluke: 4743)
0x0000-0x1FFF8192ss_7.b6CRC(990890b1),characters (Fluke: 4743)
0x2000-0x3FFF8192ss_8.b5CRC(9388ff82) (Fluke: E64D)
0x2000-0x3FFF8192ss_8.b5CRC(9388ff82) (Fluke: E64D)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192ss_9.m5CRC(8cb1cacf),sprites (Fluke: 748B)
0x0000-0x1FFF8192ss_9.m5CRC(8cb1cacf),sprites (Fluke: 748B)
0x2000-0x3FFF8192ss_10.m6CRC(f802815e) (Fluke: 6CFA)
0x2000-0x3FFF8192ss_10.m6CRC(f802815e) (Fluke: 6CFA)
0x4000-0x5FFF8192ss_11.m3CRC(4dbad88a) (Fluke: 2426)
0x4000-0x5FFF8192ss_11.m3CRC(4dbad88a) (Fluke: 2426)
0x6000-0x7FFF8192ss_12.m4CRC(aa05e687) (Fluke: AEDA)
0x6000-0x7FFF8192ss_12.m4CRC(aa05e687) (Fluke: AEDA)
0x8000-0x9FFF8192ss_13.m1CRC(66119bfa) (Fluke: 2DE4)
0x8000-0x9FFF8192ss_13.m1CRC(66119bfa) (Fluke: 2DE4)
0xA000-0xBFFF8192ss_14.m2CRC(e14ef54e) (Fluke: DA1E)
0xA000-0xBFFF8192ss_14.m2CRC(e14ef54e) (Fluke: DA1E)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x4000-0x7FFF16384ss.01eCRC(cd40cc54) (Fluke: 740B)
0x8000-0xBFFF16384ss.02eCRC(c3476527) (Fluke: 8E10)
0xC000-0xFFFF16384ss.03eCRC(1fd0e729) (Fluke: 65ED)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32ssb4.b2CRC(c8eaf234),red/green component (Fluke: D846)
0x0000-0x001F32ssb4.b2CRC(c8eaf234),red/green component (Fluke: D846)
0x0020-0x003F32ssb5.b1CRC(0e434add),blue component (Fluke: A42A)
0x0020-0x003F32ssb5.b1CRC(0e434add),blue component (Fluke: A42A)
0x0040-0x013F256ssb2.c4CRC(c53321c6),character lookup table (Fluke: 143F)
0x0040-0x013F256ssb2.c4CRC(c53321c6),character lookup table (Fluke: 143F)
0x0140-0x023F256ssb3.h7CRC(7d2c324a),sprite lookup table (Fluke: 12AC)
0x0140-0x023F256ssb3.h7CRC(7d2c324a),sprite lookup table (Fluke: 12AC)
0x0240-0x033F256ssb1.k11CRC(a04b0cfe),unknown (not used) (Fluke: 617A)
0x0240-0x033F256ssb1.k11CRC(a04b0cfe),unknown (not used) (Fluke: 617A)
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