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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.
Speed Attack! (Seta Kikaku Corp., 1984)
Memory Area:speedatk_io
Address RangeLengthFunctionDescription
0x0000-0x00012Writem6845_w (//h46505 address / data routing)
0x00241Device Writewatchdog, watchdog_timer_device, reset_w
0x00401Device Readaysnd, ay8910_device, data_r
0x0040-0x00412Device Writeaysnd, ay8910_device, address_data_w
Memory Area:speedatk_mem
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x80001Read/Writekey_matrix_r,key_matrix_w
0x80011Read/Writekey_matrix_status_r,key_matrix_status_w
0x8800-0x8FFF2048RAM
0xA000-0xA3FF1024RAM, Sharedvideoram
0xB000-0xB3FF1024RAM, Sharedcolorram
 

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
0x0000-0x1FFF8192cb0-7CRC(a86007b5) (Fluke: DC69)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192cb0-5CRC(47a966e7) (Fluke: 70E3)
0x2000-0x3FFF8192cb0-6CRC(cc1da937) (Fluke: 160A)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192cb1-1CRC(df988e05) (Fluke: 6A7E)
0x2000-0x3FFF8192cb0-2CRC(be949154) (Fluke: 2ADB)
0x4000-0x5FFF8192cb1-3CRC(741a5949) (Fluke: 1DD1)
0x6000-0x7FFF8192cb0-4CRC(53a9c0c8) (Fluke: F650)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32cb1.bprCRC(a0176c23),color PROM (Fluke: D044)
0x0020-0x011F256cb2.bprCRC(a604cf96),lookup table (Fluke: 42C4)
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