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:nevada_map
Address RangeLengthFunctionDescription
0x10000-0x21FFF73728RAM, Sharedbackup
0x900000-0x9000012Device Write 8-bitcrtc,mc6845_device, address_w,0x00ff
0x908000-0x9080012Device Write 8-bitcrtc,mc6845_device,register_w,0x00ff
0xA00000-0xA000012Read/Writeio_board_r,io_board_w
0xA08000-0xA080012Writeio_board_x
0xA10000-0xA100012Device Writewatchdog, watchdog_timer_device, reset16_w
0xA20000-0xA200012Device Write 8-bitaysnd, ay8910_device, address_w, 0x00ff
0xA28000-0xA280012Device Write 8-bitaysnd, ay8910_device, data_w, 0x00ff
0xA30000-0xA300FF256Device Read/Write 8-bitrtc,msm6242_device, read, write, 0x00ff
0xA40000-0xA400012Read/Writenevada_sec_r, nevada_sec_w
0xB00000-0xB01FFF8192RAM(// Video)
0xB10000-0xB100FF256Device Read/Write 8-bitduart40_68681, mc68681_device, read, write, 0x00ff (// Lower byte)
0xB20000-0xB200FF256Device Read/Write 8-bitduart39_68681, mc68681_device, read, write, 0x00ff (// Lower byte)
0xE00000-0xE000FF256Device Read/Write 8-bitduart18_68681, mc68681_device, read, write, 0xff00 (// Upper byte)
0xFA0000-0xFBFFFF131072RAM(// not used)
0xFC0000-0xFFFFFF262144ROM(// ROM ext + ROM boot)
 

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
0x0000-0x7FFF32768u34char.binCRC(6f1c6953),Characters
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