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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.
Reaktor (Zilec, 1987)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x10001Mirror, Device Write0x007f, watchdog, watchdog_timer_device, reset_w (/* AFE */)
0x10801Mirror, Write0x0078, trackfld_flipscreen_w (/* FLIP */)
0x10811Mirror, Device Write0x0078, trackfld_audio, trackfld_audio_device, konami_sh_irqtrigger_w (/* 26 */ /* cause interrupt on audio CPU */)
0x10821Mirror, Write NOP0x0078, (/* 25 */)
0x1083-0x10842Mirror, Write0x0078, coin_w (/* 24, 23 */)
0x10851Mirror, Write NOP0x0078, (/* CN3.2 */)
0x10861Mirror, Write NOP0x0078, (/* CN3.4 */)
0x10871Mirror, Write0x0078, irq_mask_w (/* INT */)
0x11001Mirror, Device Write0x007f, soundlatch, generic_latch_8_device, write (/* 32 */)
0x12001Mirror, Read Port0x007f, DSW2
0x0001For Vertical MonitorActive High
0x0000For Horizontal MonitorActive High
0x0002OffActive High
0x0000OnActive High
0x0004OffActive High
0x0000OnActive High
0x0008OffActive High
0x0000OnActive High
0x0000OffActive High
0x0010OnActive High
0x0020OffActive High
0x0000OnActive High
0x0040OffActive High
0x0000OnActive High
0x0080OffActive High
0x0000OnActive High
0x12801Mirror, Read Port0x007c, SYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008Start 1Active Low
0x0010Start 2Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x12811Mirror, Read Port0x007c, IN0
0x0001Joystick LeftActive Low
0x0002Joystick RightActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Button 1Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x12821Mirror, Read Port0x007c, IN1
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x12831Mirror, Read Port0x007c, DSW1
0x000110p / 25c per playActive High
0x000020p / 50c per playActive High
0x0002OffActive High
0x0000OnActive High
0x0004OffActive High
0x0000OnActive High
0x0008OffActive High
0x0000OnActive High
0x0010English (10p / 20p)Active High
0x0000American (25c / 50c)Active High
0x00602Active High
0x00403Active High
0x00204Active High
0x00005Active High
0x008020000Active High
0x000030000Active High
0x1800-0x183F64RAM, Sharedspriteram2
0x1840-0x185F32RAM, Sharedscroll
0x1860-0x1BFF928RAM
0x1C00-0x1C3F64RAM, Sharedspriteram
0x1C40-0x1C5F32RAM, Sharedscroll2
0x1C60-0x1FFF928RAM
0x2800-0x2FFF2048RAM, Sharednvram
0x3000-0x37FF2048RAM Write, Sharedtrackfld_videoram_w, videoram
0x3800-0x3FFF2048RAM Write, Sharedtrackfld_colorram_w, colorram
0x6000-0xFFFF40960ROM
Memory Area:reaktor_io_map
Address RangeLengthFunctionDescription
0x00001Write NOP
0x00011Read/Write NOP
0x00021Write NOP
0x00031Write NOP
Memory Area:reaktor_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x90001Device Writewatchdog, watchdog_timer_device, reset_w
0x90801Writetrackfld_flipscreen_w
0x90811Device Writetrackfld_audio, trackfld_audio_device, konami_sh_irqtrigger_w (/* cause interrupt on audio CPU */)
0x9083-0x90842Writecoin_w
0x90871Writeirq_mask_w
0x91001Device Writesoundlatch, generic_latch_8_device, write
0x92001Read PortDSW2
0x0001For Vertical MonitorActive High
0x0000For Horizontal MonitorActive High
0x0002OffActive High
0x0000OnActive High
0x0004OffActive High
0x0000OnActive High
0x0008OffActive High
0x0000OnActive High
0x0000OffActive High
0x0010OnActive High
0x0020OffActive High
0x0000OnActive High
0x0040OffActive High
0x0000OnActive High
0x0080OffActive High
0x0000OnActive High
0x92801Read PortSYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008Start 1Active Low
0x0010Start 2Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x92811Read PortIN0
0x0001Joystick LeftActive Low
0x0002Joystick RightActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Button 1Active Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x92821Read PortIN1
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x92831Read PortDSW1
0x000110p / 25c per playActive High
0x000020p / 50c per playActive High
0x0002OffActive High
0x0000OnActive High
0x0004OffActive High
0x0000OnActive High
0x0008OffActive High
0x0000OnActive High
0x0010English (10p / 20p)Active High
0x0000American (25c / 50c)Active High
0x00602Active High
0x00403Active High
0x00204Active High
0x00005Active High
0x008020000Active High
0x000030000Active High
0x9800-0x983F64RAM, Sharedspriteram2
0x9840-0x985F32RAM, Sharedscroll
0x9860-0x9BFF928RAM
0x9C00-0x9C3F64RAM, Sharedspriteram
0x9C40-0x9C5F32RAM, Sharedscroll2
0x9C60-0x9FFF928RAM
0xA800-0xABFF1024RAM
0xAC00-0xAFFF1024RAM, Sharednvram
0xB000-0xB7FF2048RAM Write, Sharedtrackfld_videoram_w, videoram
0xB800-0xBFFF2048RAM Write, Sharedtrackfld_colorram_w, colorram
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x43FF1024Mirror, RAM0x1c00,
0x60001Mirror, Device Read0x1fff, soundlatch, generic_latch_8_device, read
0x80001Mirror, Device Read0x1fff, trackfld_audio, trackfld_audio_device, trackfld_sh_timer_r
0xA0001Mirror, Write0x1fff, konami_SN76496_latch_w
0xC0001Mirror, Read, Write0x1fff, trackfld_SN76496_r, konami_SN76496_w
0xE0001Mirror, Device Write0x1ff8, dac, dac_byte_interface, write
0xE0011Mirror, Read/Write NOP0x1ff8, (/* watch dog ?; reaktor reads here */)
0xE0021Mirror, Device Read0x1ff8, trackfld_audio, trackfld_audio_device, trackfld_speech_r
0xE0031Mirror, Mask, Device Write0x1c78, 0x0380, trackfld_audio, trackfld_audio_device, trackfld_sound_w
0xE0041Mirror, Device Write0x1ff8, vlm, vlm5030_device, data_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.   
Memory Area:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF81922c.binCRC(105a8beb) (Fluke: 7D5A)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF819211c.binCRC(d24553fa) (Fluke: 23D6)
0x2000-0x3FFF819212c.binCRC(d0d39e66) (Fluke: D46B)
0x4000-0x5FFF819214c.binCRC(4d0ab831) (Fluke: 14E2)
0x6000-0x7FFF819215c.binCRC(bf1e608d) (Fluke: 8652)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF819216h.binCRC(cb062c3b) (Fluke: 1817)
0x2000-0x3FFF819215h.binCRC(df83e659) (Fluke: 2B93)
0x4000-0x5FFF819214h.binCRC(5ca53215) (Fluke: 1D92)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768prog3.binCRC(8ba956fa) (Fluke: 056B)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32361b16.f1CRC(d55f30b5),palette (Fluke: FE70)
0x0020-0x011F256361b17.b16CRC(d2ba4d32),sprite lookup table (Fluke: BEE4)
0x0120-0x021F256361b18.e15CRC(053e5861),char lookup table (Fluke: FFAE)
Memory Area:vlm
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192c9_d15.binCRC(f546a56b) (Fluke: 3D68)
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