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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.
Delta Race (bootleg (Allied Leisure), 1981)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x4BFF3072RAM
0x5C00-0x5CFF256RAM, Sharednvram (/* NVRAM */)
0x8000-0x8FFF4096RAM, Shared, Regionvectorram, maincpu, 0x8000 (/* vector ram */)
0x9000-0x9FFF4096ROM(/* vector rom */)
Memory Area:port_map
Address RangeLengthFunctionDescription
0x00081Readomegrace_vg_go_r
0x00091Device Readwatchdog, watchdog_timer_device, reset_r
0x000A1Device Writedvg, dvg_device, reset_w
0x000B1Read PortAVGDVG (/* vg_halt */)
0x00101Read PortDSW1 (/* DIP SW C4 */)
0x00111Read PortIN0 (/* Player 1 input */)
0x00121Read PortIN1 (/* Player 2 input */)
0x00131Writeomegrace_leds_w (/* coin counters, leds, flip screen */)
0x00141Writeomegrace_soundlatch_w (/* Sound command */)
0x00151Readomegrace_spinner1_r (/* 1st controller */)
0x00161Read PortSPIN1 (/* 2nd controller (cocktail) */)
0x00171Read PortDSW2 (/* DIP SW C6 */)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048ROM, Mirror0x800
0x1000-0x13FF1024RAM
Memory Area:sound_port
Address RangeLengthFunctionDescription
0x00001Device Readsoundlatch, generic_latch_8_device, read (// the game reads from ay1 port b, but ay8912 only has port a)
0x0000-0x00012Device Writeay1, ay8912_device, address_data_w
0x0002-0x00032Device Writeay2, ay8912_device, address_data_w
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048sound.k5CRC(7d426017) (Fluke: 7D72)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096omega.m7CRC(0424d46e) (Fluke: 9B58)
0x1000-0x1FFF4096omega.l7CRC(edcd7a7d) (Fluke: 57EE)
0x2000-0x2FFF4096omega.k7CRC(6d10f197) (Fluke: 3F07)
0x3000-0x3FFF4096delta.j7CRC(8ef9541e) (Fluke: 4E69)
0x9000-0x97FF2048omega.e1CRC(1d0fdf3a) (Fluke: 286F)
0x9800-0x9FFF2048omega.f1CRC(d44c0814) (Fluke: A9F1)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256dvgprom.binCRC(d481e958) (Fluke: F02C)
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