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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.
Atomic Boy (Irem (Memetron license), 1985)
Memory Area:i8039_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096ROM
Memory Area:i8039_port_map
Address RangeLengthFunctionDescription
0x00001Readirq_r
0x00001Writep2_w
0x0000-0x00FF256Read/Writesnddata_r, snddata_w
0x00001Writep1_w
Memory Area:m63_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xD000-0xDFFF4096RAM
0xE000-0xE1FF512RAM
0xE200-0xE2FF256RAM, Sharedspriteram
0xE300-0xE3FF256RAM, Sharedscrollram
0xE400-0xE7FF1024RAM Write, Sharedm63_videoram2_w, videoram2
0xE800-0xEBFF1024RAM Write, Sharedm63_videoram_w, videoram
0xEC00-0xEFFF1024RAM Write, Sharedm63_colorram_w, colorram
0xF0001Writenmi_mask_w
0xF0021Writem63_flipscreen_w
0xF0031Writem63_palbank_w
0xF006-0xF0072Writecoin_w
0xF8001Read Port, Device WriteP1, soundlatch, generic_latch_8_device, write
0xF8011Read Port, Write NOPP2, (/* continues game when in stop mode (cleared by NMI handler) */)
0xF8021Read PortDSW1
0xF8031Writesnd_irq_w
0xF8061Read PortDSW2
 

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
0x0000-0x0FFF4096wt_b-5e.binCRC(fe45df43) (Fluke: 26B5)
0x0000-0x0FFF4096wt_b-5e.binCRC(fe45df43) (Fluke: 26B5)
0x1000-0x1FFF4096wt_b-5f.binCRC(87a17eff) (Fluke: FEED)
0x1000-0x1FFF4096wt_b-5f.binCRC(87a17eff) (Fluke: FEED)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192wt_b-5a.binCRC(da22c452) (Fluke: FC97)
0x0000-0x1FFF8192wt_b-5a.binCRC(da22c452) (Fluke: FC97)
0x2000-0x3FFF8192wt_b-5b.binCRC(4fb25a1f) (Fluke: F9ED)
0x2000-0x3FFF8192wt_b-5b.binCRC(4fb25a1f) (Fluke: F9ED)
0x4000-0x5FFF8192wt_b-5d.binCRC(75be2604) (Fluke: 4C19)
0x4000-0x5FFF8192wt_b-5d.binCRC(75be2604) (Fluke: 4C19)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192wt_a-3j-b.binCRC(996470f1),All these ROMs are 2764 type/size (Fluke: FF09)
0x2000-0x3FFF8192wt_a-3k-b.binCRC(8f4ec45c) (Fluke: 40DE)
0x4000-0x5FFF8192wt_a-3m-b.binCRC(4ac40358) (Fluke: BC87)
0x6000-0x7FFF8192wt_a-3n-b.binCRC(709eef5b) (Fluke: 47CA)
0x8000-0x9FFF8192wt_a-3p-b.binCRC(3018b840) (Fluke: 3CDB)
0xA000-0xBFFF8192wt_a-3s-b.binCRC(05a251d4) (Fluke: EEF2)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192wt_a-4e.binCRC(f7978185) (Fluke: F9D3)
0x0000-0x1FFF8192wt_a-4e.binCRC(f7978185) (Fluke: F9D3)
0x2000-0x3FFF8192wt_a-4h.binCRC(0ca9950b) (Fluke: D0C5)
0x2000-0x3FFF8192wt_a-4h.binCRC(0ca9950b) (Fluke: D0C5)
0x4000-0x5FFF8192wt_a-4j.binCRC(1badbc65) (Fluke: 35A5)
0x4000-0x5FFF8192wt_a-4j.binCRC(1badbc65) (Fluke: 35A5)
0x6000-0x7FFF8192wt_a-4k.binCRC(5a341f75) (Fluke: 689A)
0x6000-0x7FFF8192wt_a-4k.binCRC(5a341f75) (Fluke: 689A)
0x8000-0x9FFF8192wt_a-4m.binCRC(c1f8a7d5) (Fluke: 7719)
0x8000-0x9FFF8192wt_a-4m.binCRC(c1f8a7d5) (Fluke: 7719)
0xA000-0xBFFF8192wt_a-4n.binCRC(b212f7d2) (Fluke: 3E0D)
0xA000-0xBFFF8192wt_a-4n.binCRC(b212f7d2) (Fluke: 3E0D)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256wt_a-5s-b.bprCRC(991e2a04),red TBP24S10 (read as 82s129) (Fluke: F4DC)
0x0100-0x01FF256wt_a-5r-b.bprCRC(fb3822b7),green TBP24S10 (read as 82s129) (Fluke: E30B)
0x0200-0x02FF256wt_a-5p-b.bprCRC(95849f7d),blue TBP24S10 (read as 82s129) (Fluke: D106)
0x0300-0x031F32wt_b-9l-.bprCRC(d2728744),char palette (Fluke: 0592)
0x0300-0x031F32wt_b-9l-.bprCRC(d2728744),char palette (Fluke: 0592)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096wt_a-6d.binCRC(a5dde29b) (Fluke: 88B7)
0x0000-0x0FFF4096wt_a-6d.binCRC(a5dde29b) (Fluke: 88B7)
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