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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.
Viper Phase 1 (Seibu Kaihatsu (Metrotainment license), 1995)
Memory Area:spi_map
Address RangeLengthFunctionDescription
0x0600-0x06034Write NOP(// ?)
0x0680-0x06834Device Read 8-bitsoundfifo2, fifo7200_device, data_byte_r, 0x000000ff
0x0680-0x06834Device Write 8-bitsoundfifo1, fifo7200_device, data_byte_w, 0x000000ff
0x0684-0x06874Read 8-bitsound_fifo_status_r, 0x000000ff
0x0688-0x068B4Write 8-bitz80_prg_transfer_w, 0x000000ff
0x068C-0x068F4Write 8-bitrf2_layer_bank_w, 0x00ff0000
0x068C-0x068F4Write 8-bitz80_enable_w, 0x000000ff
0x06D0-0x06D34Device Write 8-bitds2404, ds2404_device, ds2404_1w_reset_w, 0x000000ff
0x06D4-0x06D74Device Write 8-bitds2404, ds2404_device, ds2404_data_w, 0x000000ff
0x06D8-0x06DB4Device Write 8-bitds2404, ds2404_device, ds2404_clk_w, 0x000000ff
0x06DC-0x06DF4Device Read 8-bitds2404, ds2404_device, ds2404_data_r, 0x000000ff
0x06DC-0x06DF4Read 8-bitspi_ds2404_unknown_r, 0x0000ff00
0xA00000-0x13FFFFF10485760ROM, Regionsound01, 0
Memory Area:spi_soundmap
Address RangeLengthFunctionDescription
0x40081Device Writesoundfifo2, fifo7200_device, data_byte_w
0x400A1Read PortJUMPERS (// TO DO: get these to actually work)
 

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:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFFF4194304v_obj-1.322CRC(3be5b631) (Fluke: E783)
0x400000-0x7FFFFF4194304v_obj-2.324CRC(924153b4) (Fluke: A75F)
0x800000-0xBFFFFF4194304v_obj-3.323CRC(e9fb9062) (Fluke: 091D)
Memory Area:soundflash1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576flash0_blank_region22.u1053CRC(5fee8413)
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