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:bigrun_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// ROM)
0x80000-0x800012Read Port, WriteIN1, leds_out_w (// Coins)
0x80002-0x800032Read Port, WriteIN2, unknown_out_w (// Buttons)
0x80004-0x800052Read Port, WriteIN3, motor_out_w (// Motor Limit Switches)
0x80006-0x800072Read Port, WriteIN4, wheel_out_w (// DSW 1 & 2)
0x80008-0x800092Device Readsoundlatch2, generic_latch_16_device, read (// From sound cpu)
0x8000A-0x8000B2Device Writesoundlatch, generic_latch_16_device, write (// To sound cpu)
0x8000C-0x8000D2Write NOP(// ??)
0x80010-0x800112Read/Writebigrun_ip_select_r, ip_select_w
0x80012-0x800132Writeip_select_plus1_w
0x82000-0x820056Device Read/Writescroll0, megasys1_tilemap_device, scroll_r, scroll_w
0x82008-0x8200D6Device Read/Writescroll1, megasys1_tilemap_device, scroll_r, scroll_w
0x82100-0x821056Device Read/Writescroll2, megasys1_tilemap_device, scroll_r, scroll_w
0x82108-0x821092Read/Write NOP(// ? written with 0 only)
0x82200-0x822012Read PortIN5 (// DSW 3 (4 bits))
0x82208-0x822092Read/Write NOP(// watchdog reset)
0x82308-0x823092Writecischeat_comms_w
0x82400-0x824012Writeactive_layers_w
0x84000-0x847FF2048RAM(// Linking with other units)
0x88000-0x8BFFF16384RAM, Sharedshare2 (// Sharedram with sub CPU#2)
0x8C000-0x8FFFF16384RAM, Sharedshare1 (// Sharedram with sub CPU#1)
0x90000-0x93FFF16384RAM Device Write, Sharedscroll0, megasys1_tilemap_device, write, scroll0 (// Scroll ram 0)
0x94000-0x97FFF16384RAM Device Write, Sharedscroll1, megasys1_tilemap_device, write, scroll1 (// Scroll ram 1)
0x98000-0x9BFFF16384RAM Device Write, Sharedscroll2, megasys1_tilemap_device, write, scroll2 (// Scroll ram 2)
0x9C000-0x9FFFF16384RAM Device Write, Sharedpalette, palette_device, write, palette (// Palettes)
0xF0000-0xFFFFF65536RAM, Sharedram (// RAM)
0x100000-0x13FFFF262144ROM, Regionuser1,0 (// ROM)
Memory Area:bigrun_map2
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x40000-0x47FFF32768RAM, Sharedshare1 (// Shared RAM (with Main CPU))
0x80000-0x807FF2048RAM, Sharedroadram.0 (// Road RAM)
0xC0000-0xC3FFF16384RAM(// RAM)
Memory Area:bigrun_map3
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x40000-0x47FFF32768RAM, Sharedshare2 (// Shared RAM (with Main CPU))
0x80000-0x807FF2048RAM, Sharedroadram.1 (// Road RAM)
0xC0000-0xC3FFF16384RAM(// RAM)
Memory Area:bigrun_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x40000-0x400012Device Read, Writesoundlatch, generic_latch_16_device, read, bigrun_soundbank_w (// From Main CPU)
0x60000-0x600012Device Writesoundlatch2, generic_latch_16_device, write (// To Main CPU)
0x80000-0x800034Device Read/Write 8-bitymsnd, ym2151_device, read, write, 0x00ff
0xA0000-0xA00034Device Read/Write 8-bitoki1, okim6295_device, read, write, 0x00ff
0xC0000-0xC00034Device Read/Write 8-bitoki2, okim6295_device, read, write, 0x00ff
0xF0000-0xFFFFF65536RAM(// RAM)
Memory Area:f1gpstar_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// ROM)
0x80000-0x800012Read PortIN1 (// DSW 1 & 2)
0x80004-0x800052Read Port, WriteIN2, f1gpstar_motor_w (// Buttons)
0x80006-0x800072Read PortIN3 (// ? Read at boot only)
0x80008-0x800092Device Writesoundlatch, generic_latch_16_device, write (// To sound cpu)
0x80008-0x800092Device Readsoundlatch2, generic_latch_16_device, read (// From sound cpu)
0x8000C-0x8000D2Read PortIN4 (// DSW 3)
0x80010-0x800112Read, Write NOPf1gpstar_wheel_r, (// Accel + Driving Wheel)
0x80014-0x800152Write NOP
0x80018-0x800192Writef1gpstar_soundint_w
0x82000-0x820056Device Read/Writescroll0, megasys1_tilemap_device, scroll_r, scroll_w
0x82008-0x8200D6Device Read/Writescroll1, megasys1_tilemap_device, scroll_r, scroll_w
0x82100-0x821056Device Read/Writescroll2, megasys1_tilemap_device, scroll_r, scroll_w
0x82108-0x821092Read/Write NOP(// ? written with 0 only)
0x82208-0x822092Read/Write NOP(// watchdog reset)
0x82308-0x823092Read NOP, Writef1gpstar_comms_w
0x82400-0x824012Writeactive_layers_w
0x88000-0x883FF1024RAM(// Linking with other units)
0x90000-0x97FFF32768RAM, Sharedshare2 (// Sharedram with sub CPU#2)
0x98000-0x9FFFF32768RAM, Sharedshare1 (// Sharedram with sub CPU#1)
0xA0000-0xA7FFF32768RAM Device Write, Sharedscroll0, megasys1_tilemap_device, write, scroll0 (// Scroll ram 0)
0xA8000-0xAFFFF32768RAM Device Write, Sharedscroll1, megasys1_tilemap_device, write, scroll1 (// Scroll ram 1)
0xB0000-0xB7FFF32768RAM Device Write, Sharedscroll2, megasys1_tilemap_device, write, scroll2 (// Scroll ram 2)
0xB8000-0xBFFFF32768RAM Device Write, Sharedpalette, palette_device, write, palette (// Palettes)
0xF0000-0xFFFFF65536RAM, Sharedram (// RAM)
0x100000-0x17FFFF524288ROM, Regionuser1,0 (// ROM)
Memory Area:f1gpstar_map2
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x80000-0x807FF2048RAM, Sharedshare1 (// Shared RAM (with Main CPU))
0x100000-0x1007FF2048RAM, Sharedroadram.0 (// Road RAM)
0x180000-0x183FFF16384RAM(// RAM)
0x200000-0x2000012Write NOP(// watchdog)
Memory Area:f1gpstar_map3
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x80000-0x807FF2048RAM, Sharedshare2 (// Shared RAM (with Main CPU))
0x100000-0x1007FF2048RAM, Sharedroadram.1 (// Road RAM)
0x180000-0x183FFF16384RAM(// RAM)
0x200000-0x2000012Write NOP(// watchdog)
Memory Area:f1gpstar_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x40004-0x400052Writecischeat_soundbank_1_w (// Sample Banking (cischeat: 40002))
0x40008-0x400092Writecischeat_soundbank_2_w (// Sample Banking (cischeat: 40004))
0x60000-0x600012Device Read, Device Writesoundlatch, generic_latch_16_device, read, soundlatch2, generic_latch_16_device, write (// From Main CPU (cischeat: 60004))
0x80000-0x800034Device Read/Write 8-bitymsnd, ym2151_device, read, write, 0x00ff
0xA0000-0xA00034Device Read/Write 8-bitoki1, okim6295_device, read, write, 0x00ff
0xC0000-0xC00034Device Read/Write 8-bitoki2, okim6295_device, read, write, 0x00ff
0xE0000-0xFFFFF131072RAM(// RAM (cischeat: f0000-fffff))
Memory Area:f1gpstr2_io_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// ROM)
0x80000-0x80FFF4096RAM, Sharedshareio
0x100000-0x1000012Write Only, Sharedioready (//)
0x180000-0x183FFF16384RAM(// RAM)
0x200000-0x2000012Read/Write NOP(//)
Memory Area:f1gpstr2_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// ROM)
0x80000-0x800012Read Port, WriteIN1, f1gpstr2_io_w (// DSW 1 & 2)
0x80004-0x800052Read Port, WriteIN2, f1gpstar_motor_w (// Buttons)
0x80006-0x800072Read PortIN3 (// ? Read at boot only)
0x80008-0x800092Device Readsoundlatch2, generic_latch_16_device, read (// From sound cpu)
0x80008-0x800092Device Writesoundlatch, generic_latch_16_device, write (// To sound cpu)
0x8000C-0x8000D2Read PortIN4 (// DSW 3)
0x80010-0x800112Read, Write NOPf1gpstar_wheel_r,
0x80014-0x800152Write NOP
0x80018-0x800192Read/Writef1gpstr2_ioready_r, f1gpstar_soundint_w
0x81000-0x81FFF4096RAM, Sharedshareio
0x82000-0x820056Device Read/Writescroll0, megasys1_tilemap_device, scroll_r, scroll_w
0x82008-0x8200D6Device Read/Writescroll1, megasys1_tilemap_device, scroll_r, scroll_w
0x82100-0x821056Device Read/Writescroll2, megasys1_tilemap_device, scroll_r, scroll_w
0x82108-0x821092Read/Write NOP(// ? written with 0 only)
0x82208-0x822092Read/Write NOP(// watchdog reset)
0x82308-0x823092Read NOP, Writef1gpstar_comms_w
0x82400-0x824012Writeactive_layers_w
0x88000-0x887FF2048RAM(// Linking with other units)
0x90000-0x97FFF32768RAM, Sharedshare2 (// Sharedram with sub CPU#2)
0x98000-0x9FFFF32768RAM, Sharedshare1 (// Sharedram with sub CPU#1)
0xA0000-0xA7FFF32768RAM Device Write, Sharedscroll0, megasys1_tilemap_device, write, scroll0 (// Scroll ram 0)
0xA8000-0xAFFFF32768RAM Device Write, Sharedscroll1, megasys1_tilemap_device, write, scroll1 (// Scroll ram 1)
0xB0000-0xB7FFF32768RAM Device Write, Sharedscroll2, megasys1_tilemap_device, write, scroll2 (// Scroll ram 2)
0xB8000-0xBFFFF32768RAM Device Write, Sharedpalette, palette_device, write, palette (// Palettes)
0xF0000-0xFFFFF65536RAM, Sharedram (// RAM)
0x100000-0x17FFFF524288ROM, Regionuser1,0 (// ROM)
Memory Area:f1gpstr2_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM(// ROM)
0x40004-0x400052Writecischeat_soundbank_1_w (// Sample Banking)
0x40008-0x400092Writecischeat_soundbank_2_w (// Sample Banking)
0x4000E-0x4000F2Write NOP(// ? 0 (f1gpstar: no))
0x60002-0x600032Device Writesoundlatch2, generic_latch_16_device, write (// To Main CPU)
0x60004-0x600052Device Readsoundlatch, generic_latch_16_device, read (// From Main CPU)
0x80000-0x800034Device Read/Write 8-bitymsnd, ym2151_device, read, write, 0x00ff
0xA0000-0xA00034Device Read/Write 8-bitoki1, okim6295_device, read, write, 0x00ff
0xC0000-0xC00034Device Read/Write 8-bitoki2, okim6295_device, read, write, 0x00ff
0xE0000-0xFFFFF131072RAM(// RAM)
 

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:oki1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF52428892116-2.18CRC(8c06cded) (Fluke: 5056)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF52428892116-1.4CRC(8da37b9d) (Fluke: C5CE)
Memory Area:road0
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF52428892021-08.64CRC(54ff00c4) (Fluke: 42B1)
0x80000-0xFFFFF52428892021-07.63CRC(258d524a) (Fluke: B66E)
0x100000-0x17FFFF52428892021-06.62CRC(f1423efe) (Fluke: F8ED)
0x180000-0x1FFFFF52428892021-05.61CRC(88bb6db1) (Fluke: BEA3)
Memory Area:road1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF52428892021-04.17CRC(3a2e6b1e) (Fluke: F66C)
0x80000-0xFFFFF52428892021-03.16CRC(1f041f65) (Fluke: EC65)
0x100000-0x17FFFF52428892021-02.15CRC(d0582ad8) (Fluke: FCA6)
0x180000-0x1FFFFF52428892021-01.14CRC(06e50be4) (Fluke: 3EE7)
Memory Area:scroll0
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF5242889188a-25.123CRC(000c83d2) (Fluke: D7FB)
Memory Area:scroll1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF5242889188a-28.152CRC(e734f8ea) (Fluke: 6518)
Memory Area:scroll2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF1310729188a-30.174CRC(c5906023) (Fluke: 5C49)
Memory Area:user2
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256pr88004w.66CRC(3d648467) (Fluke: EB3D)
0x0000-0x1FFF8192ch9072_5.33CRC(e122916b) (Fluke: 1CD3)
0x0000-0x01FF512pr88004q.105CRC(9327dc37) (Fluke: E257)
0x0000-0x1FFF8192ch9072_8.59CRC(6bf52596) (Fluke: 13A3)
0x0000-0x1FFF8192ch9072_4.39CRC(b45b4dc0) (Fluke: 5128)
0x0000-0x1FFF8192ch9072_6.35CRC(05d95bf7) (Fluke: EEDF)
0x0000-0x7FFFF52428890015-01.79CRC(ce4bfe6e) (Fluke: E4BC)
0x0000-0x7FFFF52428890015-35.54CRC(9d428fb7) (Fluke: 08D2)
0x0000-0x07FF2048pr90015a.117CRC(777583db) (Fluke: 8FA9)
0x0000-0x7FFFF52428890015-01.14CRC(ce4bfe6e) (Fluke: E4BC)
0x0000-0x7FFFF52428890015-02.80CRC(fcbecc9b) (Fluke: 27CF)
0x0000-0x7FFFF52428890015-02.15CRC(fcbecc9b) (Fluke: 27CF)
0x0000-0x7FFFF52428890015-03.81CRC(ccf5b158) (Fluke: B3AF)
0x0000-0x7FFFF52428890015-03.16CRC(ccf5b158) (Fluke: B3AF)
0x0000-0x7FFFF52428890015-04.82CRC(5b324c81) (Fluke: 2995)
0x0000-0x7FFFF52428890015-04.17CRC(5b324c81) (Fluke: 2995)
0x0000-0x7FFFF52428890015-35.67CRC(9d428fb7) (Fluke: 08D2)
0x0000-0x00FF256pr90015b.153CRC(be240dac) (Fluke: BD56)
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