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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.
S-Plus (IGT - International Game Technology, 1994)
Memory Area:splus_iomap
Address RangeLengthFunctionDescription
0x00001Read, Write, Sharedsplus_io_r, splus_io_w, io_port
0x00001Read, Writesplus_serial_r, splus_serial_w
0x1000-0x1FFF4096RAM, Sharedcmosl
0x20001Read/Writesplus_watchdog_r, splus_7seg_w
0x3000-0x300F16Read/Writesplus_duart_r, splus_duart_w
0x40001Read Port, Device WriteSW1, aysnd, ay8910_device, address_w
0x40011Device Writeaysnd, ay8910_device, data_w
0x50001Read, Writesplus_reel_optics_r, i2c_nvram_w
0x60001Read/Writesplus_registers_r, splus_load_pulse_w
0x7000-0x7FFF4096RAM, Sharedcmosh
0x8000-0x9FFF8192Read, Sharedsplus_m_reel_ram_r, reel_ram
Memory Area:splus_map
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM, Sharedprograram
 

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
0x0000-0xFFFF65536sp1271.u52CRC(dc164599)
Memory Area:reeldata
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192ss4240.u53CRC(c5715b9b)
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