Search

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.
Sea Battle (Zaccaria, 1980)
Memory Area:seabattl_io_map
Address RangeLengthFunctionDescription
0x00001Read/Writeseabattl_collision_clear_r, seabattl_collision_clear_w
0x00001Read PortSENSE
0x0080CustomActive High
0x00001Read/Writeseabattl_collision_r, seabattl_control_w
Memory Area:seabattl_map
Address RangeLengthFunctionDescription
0x0000-0x13FF5120ROM
0x1400-0x17FF1024Mirror, RAM Write, Shared0x2000, seabattl_colorram_w, colorram
0x1800-0x1BFF1024Mirror, RAM Write, Shared0x2000, seabattl_videoram_w, videoram
0x1C00-0x1CFF256Mirror, RAM0x2000,
0x1D00-0x1DFF256Mirror, RAM, Shared0x2000, , objram
0x1E001Mirror, Write0x20f0, time_display_w
0x1E011Mirror, Write0x20f0, score_display_w
0x1E021Mirror, Read Port, Write0x20f0, IN0, score2_display_w
0x0001Coin 1Active Low
0x0002UnknownActive Low
0x0004Button 1Active Low
0x0008Button 2Active Low
0x0010Coin 2Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x1E051Mirror, Read Port0x20f0, DIPS2
0x00f0UnusedActive Low
0x1E061Mirror, Read Port, Write0x20f0, DIPS1, sound_w
0x0001SlowActive High
0x0000FastActive High
0x0006OffActive High
0x00042000 pointsActive High
0x00023000 pointsActive High
0x00004000 pointsActive High
0x0038Coin_AActive High
0x00002C_1CActive High
0x00081C_1CActive High
0x00101C_2CActive High
0x00181C_3CActive High
0x00201C_4CActive High
0x00281C_5CActive High
0x00301C_6CActive High
0x00381C_7CActive High
0x00c0UnusedActive Low
0x1E071Mirror, Read Port, Write0x20f0, DIPS0, sound2_w
0x0000Time BasedActive High
0x0001Lives BasedActive High
0x0006Game_TimeActive High
0x0000Free_PlayActive High
0x000275 secondsActive High
0x000690 secondsActive High
0x0004105 secondsActive High
0x0000Free_PlayActive High
0x00023Active High
0x00064Active High
0x00045Active High
0x0038Coin_BActive High
0x00002C_1CActive High
0x00081C_1CActive High
0x00101C_2CActive High
0x00181C_3CActive High
0x00201C_4CActive High
0x00281C_5CActive High
0x00301C_6CActive High
0x00381C_7CActive High
0x00c0UnusedActive Low
0x1F00-0x1FFF256Mirror, Device Read/Write0x2000, s2636, s2636_device, read_data, write_data
0x1FCC1Mirror, Read Port0x2000, IN1
0x00ffAd Stick XActive High
0x2000-0x33FF5120ROM
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048sea b red.prgCRC(fe7192df)
0x0800-0x0FFF2048sea b green.prgCRC(cea4c0c9)
0x1000-0x17FF2048sea b blu.prgCRC(cd972c4a)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048sea b screen.prgCRC(8e4391dd)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048sea b wawe.prgCRC(7e356dc5)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024sea b b_1 1.prgCRC(16a475c0)
0x0400-0x07FF1024sea b b_1 2.prgCRC(4bd73a82)
0x0800-0x0BFF1024sea b b_1 3.prgCRC(e251492b)
0x0C00-0x0FFF1024sea b b_1 4.prgCRC(6012b83f)
0x1000-0x13FF1024sea b b_1 5.prgCRC(55c263f6)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3