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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.
Congo Bongo (Sega, 1983)
Memory Area:congo_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x8FFF4096RAM
0xA000-0xA3FF1024Mirror, RAM Write, Shared0x1800, zaxxon_videoram_w, videoram
0xA400-0xA7FF1024Mirror, RAM Write, Shared0x1800, congo_colorram_w, colorram
0xC0001Mirror, Read Port0x1fc4, SW00
0xC0011Mirror, Read Port0x1fc4, SW01
0xC0021Mirror, Read Port0x1fc4, DSW02
0xC0031Mirror, Read Port0x1fc4, DSW03
0xC0081Mirror, Read Port0x1fc7, SW100
0xC018-0xC01A3Mirror, Write0x1fc0, zaxxon_coin_enable_w
0xC01B-0xC01C2Mirror, Write0x1fc0, zaxxon_coin_counter_w
0xC01D1Mirror, Write0x1fc0, zaxxon_bg_enable_w
0xC01E1Mirror, Write0x1fc0, zaxxon_flipscreen_w
0xC01F1Mirror, Write0x1fc0, int_enable_w
0xC0211Mirror, Write0x1fc0, zaxxon_fg_color_w
0xC0231Mirror, Write0x1fc0, zaxxon_bg_color_w
0xC0261Mirror, Write0x1fc0, congo_fg_bank_w
0xC0271Mirror, Write0x1fc0, congo_color_bank_w
0xC028-0xC0292Mirror, Write0x1fc4, zaxxon_bg_position_w
0xC030-0xC0334Mirror, Write0x1fc4, congo_sprite_custom_w
0xC038-0xC03F8Mirror, Device Write0x1fc0, soundlatch, generic_latch_8_device, write
Memory Area:congo_sound_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192ROM
0x4000-0x47FF2048Mirror, RAM0x1800,
0x60001Mirror, Device Write0x1fff, sn1, sn76489a_device, write
0x8000-0x80034Mirror, Device Read/Write0x1ffc, ppi8255, i8255_device, read, write
0xA0001Mirror, Device Write0x1fff, sn2, sn76489a_device, write
Memory Area:zaxxon_map
Address RangeLengthFunctionDescription
0x0000-0x5FFF24576ROM
0x6000-0x6FFF4096RAM
0x8000-0x83FF1024Mirror, RAM Write, Shared0x1c00, zaxxon_videoram_w, videoram
0xA000-0xA0FF256Mirror, RAM, Shared0x1f00, , spriteram
0xC000-0xC0023Mirror, Write0x18f8, zaxxon_coin_enable_w
0xC0001Mirror, Read Port0x18fc, SW00
0xC0011Mirror, Read Port0x18fc, SW01
0xC0021Mirror, Read Port0x18fc, DSW02
0xC003-0xC0042Mirror, Write0x18f8, zaxxon_coin_counter_w
0xC0031Mirror, Read Port0x18fc, DSW03
0xC0061Mirror, Write0x18f8, zaxxon_flipscreen_w
0xC1001Mirror, Read Port0x18ff, SW100
0xE03C-0xE03F4Mirror, Device Read/Write0x1f00, ppi8255, i8255_device, read, write
0xE0F01Mirror, Write0x1f00, int_enable_w
0xE0F11Mirror, Write0x1f00, zaxxon_fg_color_w
0xE0F8-0xE0F92Mirror, Write0x1f00, zaxxon_bg_position_w
0xE0FA1Mirror, Write0x1f00, zaxxon_bg_color_w
0xE0FB1Mirror, Write0x1f00, zaxxon_bg_enable_w
 

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.   
0x0000-0x1FFF8192congo_rev_c_rom1.u21CRC(09355b5b),SUM16 written on label 044A (Fluke: FA1B)
0x0000-0x0FFF4096tip_top_rom_5.u76CRC(7bf6ba2b) (Fluke: F283)
0x0000-0x1FFF8192tip_top_rom_6.u57CRC(d637f02b) (Fluke: 12D9)
0x0000-0x1FFF8192tip_top_rom_6.u57CRC(d637f02b) (Fluke: 12D9)
0x0000-0x1FFF8192tip_top_rom_8.u93CRC(db99a619) (Fluke: 5802)
0x0000-0x0FFF4096tip_top_rom_5.u76CRC(7bf6ba2b) (Fluke: F283)
0x0000-0x1FFF8192tip_top_rom_12.u78CRC(15e3377a) (Fluke: 2721)
0x0000-0x1FFF8192tip_top_rom_8.u93CRC(db99a619) (Fluke: 5802)
0x0000-0x1FFF8192tip_top_rom_17.u19CRC(5024e673) (Fluke: 6B55)
0x0000-0x00FF256mr019.u87CRC(b788d8ae),BPROM type is a TBP28L22 per the schematics (Fluke: 9AC5)
0x0000-0x1FFF8192tip_top_rom_12.u78CRC(15e3377a) (Fluke: 2721)
0x2000-0x3FFF8192tip_top_rom_7.u58CRC(80927943) (Fluke: F406)
0x2000-0x3FFF8192tip_top_rom_13.u79CRC(1d1321c8) (Fluke: F3EF)
0x2000-0x3FFF8192congo_rev_c_rom2a.u22CRC(1c5e30ae),SUM16 written on label DD4D (Fluke: F71A)
0x2000-0x3FFF8192tip_top_rom_9.u94CRC(93e2309e) (Fluke: 3948)
0x2000-0x3FFF8192tip_top_rom_13.u79CRC(1d1321c8) (Fluke: F3EF)
0x2000-0x3FFF8192tip_top_rom_9.u94CRC(93e2309e) (Fluke: 3948)
0x2000-0x3FFF8192tip_top_rom_7.u58CRC(80927943) (Fluke: F406)
0x4000-0x5FFF8192congo_rev_c_rom3.u23CRC(5ee1132c),SUM16 written on label C932 (Fluke: 8805)
0x4000-0x5FFF8192tip_top_rom_11.u77CRC(73e2709f) (Fluke: D16B)
0x4000-0x5FFF8192tip_top_rom_11.u77CRC(73e2709f) (Fluke: D16B)
0x4000-0x5FFF8192tip_top_rom_10.u95CRC(f27a9407) (Fluke: 62ED)
0x4000-0x5FFF8192tip_top_rom_10.u95CRC(f27a9407) (Fluke: 62ED)
0x6000-0x7FFF8192tip_top_rom_14.u104CRC(bf9169fe) (Fluke: BA7F)
0x6000-0x7FFF8192congo_rev_c_rom4.u24CRC(5332b9bf),SUM16 written on label 5128 (Fluke: 4523)
0x6000-0x7FFF8192tip_top_rom_14.u104CRC(bf9169fe) (Fluke: BA7F)
0x8000-0x9FFF8192tip_top_rom_16.u106CRC(cb6d5775) (Fluke: 5399)
0x8000-0x9FFF8192tip_top_rom_16.u106CRC(cb6d5775) (Fluke: 5399)
0xA000-0xBFFF8192tip_top_rom_15.u105CRC(7b15a7a4) (Fluke: 84FB)
0xA000-0xBFFF8192tip_top_rom_15.u105CRC(7b15a7a4) (Fluke: 84FB)
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