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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.
Shot Rider (Seibu Kaihatsu, 1985)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x8FFF4096RAM Write, Sharedtravrusa_videoram_w, videoram
0x90001Writetravrusa_scroll_x_low_w
0xA0001Writetravrusa_scroll_x_high_w
0xC800-0xC9FF512Write Only, Sharedspriteram
0xD0001Device Writeirem_audio, irem_audio_device, cmd_w
0xD0001Read PortSYSTEM (/* IN0 */)
0x0001Start 1Active Low
0x0002Start 2Active Low
0x0004UnusedActive Low
0x0008Coin 1Active Low
0x0070UnusedActive Low
0x0080Coin 2Active Low
0xD0011Read PortP1 (/* IN1 */)
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Button 2Active Low
0x0008Button 1Active Low
0x0010UnusedActive Low
0x0020Button 1Active Low
0x0040UnusedActive Low
0x0080Button 2Active Low
0xD0011Writetravrusa_flipscreen_w (/* + coin counters - not written by shtrider */)
0xD0021Read PortP2 (/* IN2 */)
0x0003UnusedActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x00f0UnusedActive Low
0xD0031Read PortDSW1 (/* DSW1 */)
0x0007Coin_AActive High
0x00005C_1CActive High
0x00044C_1CActive High
0x00023C_1CActive High
0x00062C_1CActive High
0x00071C_1CActive High
0x00031C_2CActive High
0x00051C_3CActive High
0x00011C_5CActive High
0x0018Coin_BActive High
0x00003C_1CActive High
0x00102C_1CActive High
0x00181C_1CActive High
0x00081C_2CActive High
0xD0041Read PortDSW2 (/* DSW2 */)
0x0001Flip_ScreenActive High
0x0001OffActive High
0x0000OnActive High
0x0002km/hActive High
0x0000mphActive High
0x0008CabinetActive High
0x0008UprightActive High
0x0000CocktailActive High
0xE000-0xEFFF4096RAM
 

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
0x0000-0x1FFF8192sr05a.binCRC(34449f79) (Fluke: 7D29)
0x2000-0x3FFF8192sr06a.binCRC(de43653d) (Fluke: F1A5)
0x4000-0x5FFF8192sr07a.binCRC(3445b81c) (Fluke: 27CE)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192sr08a.binCRC(4072b096) (Fluke: 2614)
0x2000-0x3FFF8192sr09a.binCRC(fd4cc7e6) (Fluke: 182D)
0x4000-0x5FFF8192sr10b.binCRC(0a117925) (Fluke: 035B)
Memory Area:irem_audio:iremsound
Address RangeLengthLabel/LocationDescription
0x6000-0x7FFF8192sr11a.binCRC(a8396b76) (Fluke: 46A7)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192sr01a.binCRC(de76d537) (Fluke: 5835)
0x2000-0x3FFF8192sr02a.binCRC(cd1e1bfc) (Fluke: 1DE4)
0x4000-0x5FFF8192sr03a.binCRC(3ade11b9) (Fluke: E38C)
0x6000-0x7FFF8192sr04a.binCRC(02b96eaa) (Fluke: 7E06)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF2561.bprCRC(e9e258e5) (Fluke: 27FC)
0x0100-0x01FF2562.bprCRC(6cf4591c) (Fluke: FA98)
0x0200-0x021F324.bprCRC(ee97c581) (Fluke: 473E)
0x0220-0x031F2563.bprCRC(5db47092) (Fluke: 1B84)
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