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.
Memory Area:srider_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xCFFF4096RAM
0xD0001Read PortSW1
0xD0011Read PortSW2
0xD0021Read PortSW3
0xD0041Read PortSW4
0xD0051Read PortINA
0xD0061Read PortINB
0xD0091Writesubsino_out_b_w
0xD00A1Writesubsino_out_a_w
0xD00C1Read PortINC
0xD016-0xD0172Device Writeymsnd, ym3812_device, write
0xD0181Device Writeoki, okim6295_device, write
0xD01B1Writesubsino_tiles_offset_w
0xE000-0xE7FF2048RAM Write, Sharedsubsino_colorram_w, colorram
0xE800-0xEFFF2048RAM Write, Sharedsubsino_videoram_w, videoram
Memory Area:subsino_iomap
Address RangeLengthFunctionDescription
0x0000-0x003F64RAM(// internal regs)
 

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:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536rideritaly_1ver1.6.u18CRC(c7c0c3e8) (Fluke: 0C8D)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072rideritaly_4ver1.6.u54CRC(df828563) (Fluke: 0C2E)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256prom-n82s129an.u11CRC(e17730a6) (Fluke: 27FD)
0x0100-0x01FF256prom-n82s129an.u12CRC(df848861) (Fluke: 6587)
0x0200-0x02FF256prom-n82s129an.u13CRC(9cb4a5c0) (Fluke: FDA6)
Memory Area:tilemap
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768rideritaly_3ver1.6.u16CRC(998a8feb) (Fluke: 7DC3)
0x20000-0x27FFF32768rideritaly_2ver1.6.u17CRC(bdf9bf26) (Fluke: C79C)
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