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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.
Clowns (Midway, 1978)
Memory Area:clowns_io_map
Address RangeLengthFunctionDescription
0x00001Mirror, Read Port0x04, IN0
0x00ffSpecialActive High
0x00011Mirror, Read Port0x04, IN1
0x0001UnusedActive Low
0x0002UnusedActive Low
0x0004UnusedActive Low
0x0008UnusedActive Low
0x0010Start 2Active Low
0x0020Start 1Active Low
0x0040Coin 1Active Low
0x0080UnusedActive Low
0x00011Device Writemb14241, mb14241_device, shift_count_w
0x00021Device Writemb14241, mb14241_device, shift_data_w
0x00021Mirror, Read Port0x04, IN2
0x0003CoinageActive High
0x00032C_1CActive High
0x00022C_2CActive High
0x00001C_1CActive High
0x00011C_2CActive High
0x0000No BonusActive High
0x00049000Active High
0x000811000Active High
0x000c13000Active High
0x0000Each RowActive High
0x0010All RowsActive High
0x0020Bonus_LifeActive High
0x00003000Active High
0x00204000Active High
0x0040LivesActive High
0x00003Active High
0x00404Active High
0x00031Mirror, Device Read0x04, mb14241, mb14241_device, shift_result_r
0x00031Writeclowns_audio_1_w
0x00041Device Writewatchdog, watchdog_timer_device, reset_w
0x00051Writemidway_tone_generator_lo_w
0x00061Writemidway_tone_generator_hi_w
0x00071Writeclowns_audio_2_w
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192ROM, Write NOP
0x2000-0x3FFF8192Mirror, RAM, Shared0x4000, , main_ram
0x4000-0x5FFF8192ROM, Write NOP
 

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:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024h2.cpuCRC(ff4432eb) (Fluke: DFF5)
0x0400-0x07FF1024g2.cpuCRC(676c934b) (Fluke: 7C29)
0x0800-0x0BFF1024f2.cpuCRC(00757962) (Fluke: 29C2)
0x0C00-0x0FFF1024e2.cpuCRC(9e506a36) (Fluke: F6E8)
0x1000-0x13FF1024d2.cpuCRC(d61b5b47) (Fluke: 4D57)
0x1400-0x17FF1024c2.cpuCRC(154d129a) (Fluke: 5B01)
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