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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.
Buggy Challenge (Taito Corporation, 1984)
Memory Area:buggychl_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM(/* A22-04 (23) */)
0x4000-0x7FFF16384ROM(/* A22-05 (22) */)
0x8000-0x87FF2048RAM(/* 6116 SRAM (36) */)
0x8800-0x8FFF2048RAM(/* 6116 SRAM (35) */)
0x9000-0x9FFF4096Writebuggychl_sprite_lookup_w
0xA000-0xBFFF8192ROM Bank, Write, Sharedbank1, buggychl_chargen_w, charram
0xC800-0xCFFF2048RAM, Sharedvideoram
0xD1001Writebuggychl_ctrl_w
0xD2001Writebankswitch_w
0xD3001Device Writewatchdog, watchdog_timer_device, reset_w
0xD3031Writebuggychl_sprite_lookup_bank_w
0xD4001Device Read/Writebmcu, buggychl_mcu_device, buggychl_mcu_r, buggychl_mcu_w
0xD4011Device Readbmcu, buggychl_mcu_device, buggychl_mcu_status_r
0xD500-0xD57F128Write Only, Sharedspriteram
0xD6001Read PortDSW1
0x00032000/1000/50Active High
0x00021000/500/30Active High
0x0001500/200/10Active High
0x0000NoneActive High
0x0004Free_PlayActive High
0x0004OffActive High
0x0000OnActive High
0x0018DifficultyActive High
0x0018EasyActive High
0x0010NormalActive High
0x0008HardActive High
0x0000HardestActive High
0x0040Flip_ScreenActive High
0x0040OffActive High
0x0000OnActive High
0x0080UnusedActive High
0xD6011Read PortDSW2
0x000fCoin_AActive High
0x000f9C_1CActive High
0x000e8C_1CActive High
0x000d7C_1CActive High
0x000c6C_1CActive High
0x000b5C_1CActive High
0x000a4C_1CActive High
0x00093C_1CActive High
0x00082C_1CActive High
0x00001C_1CActive High
0x00011C_2CActive High
0x00021C_3CActive High
0x00031C_4CActive High
0x00041C_5CActive High
0x00051C_6CActive High
0x00061C_7CActive High
0x00071C_8CActive High
0x00f0Coin_BActive High
0x00f09C_1CActive High
0x00e08C_1CActive High
0x00d07C_1CActive High
0x00c06C_1CActive High
0x00b05C_1CActive High
0x00a04C_1CActive High
0x00903C_1CActive High
0x00802C_1CActive High
0x00001C_1CActive High
0x00101C_2CActive High
0x00201C_3CActive High
0x00301C_4CActive High
0x00401C_5CActive High
0x00501C_6CActive High
0x00601C_7CActive High
0x00701C_8CActive High
0xD6021Read PortDSW3
0x0000NoActive High
0x0001YesActive High
0x0002UnusedActive High
0x0004NormalActive High
0x0000Crash onlyActive High
0x0008UnusedActive High
0x0000NoActive High
0x0010YesActive High
0x0000NoActive High
0x0020YesActive High
0x0040OffActive High
0x0000OnActive High
0x00001Active High
0x00802Active High
0xD6031Read PortIN0 (/* player inputs */)
0x0001Start 1Active High
0x0002UnknownActive High
0x0004UnknownActive High
0x0008Button 2Active High
0x0010Test ButtonActive High
0x0020UnknownActive High
0x0040UnknownActive High
0x0080UnknownActive High
0xD6081Read PortWHEEL
0x00ffDialActive High
0xD6091Read PortIN1 (/* coin + accelerator */)
0x0001Coin 1Active High
0x0002Coin 2Active High
0x0004Service 1Active High
0x0008TiltActive High
0x00f0Button 1Active High
0xD6101Writesound_command_w
0xD6181Write NOP(/* accelerator clear */)
0xD700-0xD7FF256Device Write, Sharedpalette, palette_device, write, palette
0xD840-0xD85F32Write Only, Sharedscrollv
0xDB00-0xDBFF256Write Only, Sharedscrollh
0xDC041Write Only(/* should be fg scroll */)
0xDC061Writebuggychl_bg_scrollx_w
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x47FF2048RAM
0x4800-0x48012Device Writeay1, ay8910_device, address_data_w
0x4802-0x48032Device Writeay2, ay8910_device, address_data_w
0x4810-0x481D14Device Writemsm, msm5232_device, write
0x48201RAM(/* VOL/BAL for the 7630 on the MSM5232 output */)
0x48301RAM(/* TRBL/BASS for the 7630 on the MSM5232 output */)
0x50001Device Readsoundlatch, generic_latch_8_device, read
0x50011Writenmi_enable_w
0x50021Writenmi_disable_w
0x50031Writesound_enable_w
0xE000-0xEFFF4096ROM(/* space for diagnostics ROM */)
 

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
0x0000-0x3FFF16384a22-24.28CRC(1e7f841f) (Fluke: 41EE)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384a22-06.111CRC(1df91b17) (Fluke: C423)
0x4000-0x7FFF16384a22-07.110CRC(2f0ab9b7) (Fluke: CBBE)
0x8000-0xBFFF16384a22-08.109CRC(49cb2134) (Fluke: 509E)
0xC000-0xFFFF16384a22-09.108CRC(e682e200) (Fluke: C3E3)
0x10000-0x13FFF16384a22-10.107CRC(653b7e25) (Fluke: 5CE9)
0x14000-0x17FFF16384a22-11.106CRC(8057b55c) (Fluke: A662)
0x18000-0x1BFFF16384a22-12.105CRC(8b365b24) (Fluke: 2A46)
0x1C000-0x1FFFF16384a22-13.104CRC(2c6d68fe) (Fluke: F082)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192a22-14.59CRC(a450b3ef),vertical (Fluke: 5B7F)
0x2000-0x2FFF4096a22-15.115CRC(337a0c14),horizontal (Fluke: 67EA)
0x3000-0x3FFF4096a22-16.116CRC(337a0c14),horizontal (Fluke: 67EA)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384a22-04-2.23CRC(16445a6a) (Fluke: BA4B)
0x4000-0x7FFF16384a22-05-2.22CRC(d57430b2) (Fluke: B613)
0x10000-0x13FFF16384a22-01.3CRC(af3b7554),banked (Fluke: D925)
0x14000-0x17FFF16384a22-02.2CRC(b8a645fb),banked (Fluke: 1F8E)
0x18000-0x1BFFF16384a22-03.1CRC(5f45d469),banked (Fluke: 9F04)
Memory Area:mcu
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048a22-19.31CRC(06a71df0) (Fluke: 5413)
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