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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.
Ruleta RE-900 (Entretenimientos GEMINIS, 1993)
Memory Area:mem_io
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152Readrom_r
0x00001Read/Write NOP
0x00001Writecpu_port_0_w
0xC000-0xDFFF8192RAM, Sharednvram
0xE000-0xEFFF4096Writewatchdog_reset_w
0xE0001Device Writetms9128, tms9928a_device, vram_write
0xE0011Device Writetms9128, tms9928a_device, register_write
0xE800-0xE8012Device Writeay_re900, ay8910_device, address_data_w
0xE8021Device Readay_re900, ay8910_device, data_r
Memory Area:mem_prg
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM, Sharedrom
 

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
0x0000-0xFFFF65536re900.binCRC(967ae944) (Fluke: A570)
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