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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.
Dodge City (Merit, 1988)
Memory Area:meritm_crt250_io_map
Address RangeLengthFunctionDescription
0x0010-0x00134Device Read/Writev9938_0, v9938_device, read, write
0x0020-0x00234Device Read/Writev9938_1, v9938_device, read, write
0x0030-0x00334Device Read/Writeppi8255, i8255_device, read, write
0x0040-0x00434Device Read/Writez80pio_0, z80pio_device, read, write
0x0050-0x00534Device Read/Writez80pio_1, z80pio_device, read, write
0x0080-0x00812Device Writeaysnd, ay8930_device, address_data_w
0x00801Device Readaysnd, ay8930_device, data_r
0x00FF1Writemeritm_crt250_bank_w
Memory Area:meritm_crt250_map
Address RangeLengthFunctionDescription
0x0000-0xDFFF57344ROM Bankbank1
0xE000-0xFFFF8192RAM, Sharednvram
 

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
0x0000-0xFFFF655369131-02_u9-2t.u9CRC(22e73039),9131-02 U9-2T 880111
0x10000-0x1FFFF655369131-02_u10-0.u10CRC(bc3391f3)
0x20000-0x2FFFF655369131-02_u11-0.u11CRC(f137d70c)
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