Buggy Boy Junior/Speed Buggy Memory Map

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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 Boy Junior/Speed Buggy (Tatsumi, 1986)

Memory Area:buggyboy_main

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	RAM, Shared	nvram
0x4000-0x4FFF	4096	Read/Write	tx1_crtc_r, tx1_crtc_w
0x8000-0x9FFF	8192	RAM, Shared	vram
0xA000-0xAFFF	4096	RAM, Shared	rcram
0xB000-0xB001	2	Read/Write	dipswitches_r, z80_busreq_w
0xC000-0xC001	2	Write	buggyboy_scolst_w
0xD000-0xD003	4	Write	tx1_slincs_w
0xE000-0xE001	2	Write	buggyboy_sky_w
0xF000-0xF003	4	Device Read, Write	watchdog, watchdog_timer_device, reset16_r, resume_math_w
0x10000-0x1FFFF	65536	Read/Write	z80_shared_r, z80_shared_w
0x20000-0x2FFFF	65536	ROM
0xF0000-0xFFFFF	65536	ROM

Memory Area:buggyboy_math

Address Range	Length	Function	Description
0x0000-0x07FF	2048	RAM, Shared	math_ram
0x0800-0x0FFF	2048	Read/Write	buggyboy_spcs_ram_r, buggyboy_spcs_ram_w
0x1000-0x1FFF	4096	RAM, Shared	rcram
0x2000-0x22FF	768	RAM, Shared	objram
0x2400-0x24FF	256	Write	buggyboy_gas_w
0x3000-0x3FFF	4096	Read/Write	buggyboy_math_r, buggyboy_math_w
0x4000-0x7FFF	16384	Mirror, ROM	0xf8000,
0x5000-0x7FFF	12288	Read	buggyboy_spcs_rom_r

Memory Area:buggyboy_sound_io

Address Range	Length	Function	Description
0x0040	1	Device Read	ym1, ay8910_device, data_r
0x0040-0x0041	2	Device Write	ym1, ay8910_device, data_address_w
0x0080	1	Device Read	ym2, ay8910_device, data_r
0x0080-0x0081	2	Device Write	ym2, ay8910_device, data_address_w

Memory Area:buggyboy_sound_prg

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	ROM
0x4000-0x47FF	2048	RAM, Shared	z80_ram
0x6000-0x6001	2	Read	bb_analog_r
0x6800-0x6803	4	Device Read/Write	ppi8255, i8255_device, read, write
0x7000-0x7003	4	Device Read/Write	buggyboy, buggyboy_sound_device, pit8253_r, pit8253_w
0x7800	1	Write	z80_intreq_w
0xC000-0xC7FF	2048	Read/Write	ts_r, ts_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:audio_cpu

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	bug35s.21	CRC(65d9af57) (Fluke: 0974)

Memory Area:char_tiles

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	bug34s.46	CRC(8ea8fec4) (Fluke: 8D9C)
0x4000-0x7FFF	16384	bug33s.47	CRC(459c2b03) (Fluke: E9DE)

Memory Area:obj_luts

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	bug13.32	CRC(53604d7a) (Fluke: 1877)
0x2000-0x5FFF	16384	bug18s.141	CRC(67786327) (Fluke: FA46)

Memory Area:obj_map

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	bug16s.139	CRC(1903a9ad) (Fluke: 556B)
0x8000-0xFFFF	32768	bug17s.140	CRC(82cabdd4) (Fluke: BC85)

Memory Area:obj_tiles

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	bug26s.147	CRC(14033710) (Fluke: A9A2)
0x8000-0xFFFF	32768	bug19s.144	CRC(838e0697) (Fluke: E6DD)
0x10000-0x17FFF	32768	bug28s.146	CRC(8b47d227) (Fluke: 85DC)
0x18000-0x1FFFF	32768	bug21s.143	CRC(876a5666) (Fluke: 5388)
0x20000-0x27FFF	32768	bug30s.145	CRC(11d8e2a8) (Fluke: CA11)
0x28000-0x2FFFF	32768	bug23s.142	CRC(015db5d8) (Fluke: 3403)

Memory Area:pals_cpubd

Address Range	Length	Label/Location	Description
0x0000	1	pal16r4a-2cn.ic83
0x0000	1	pal14h4cn.ic149
0x0000	1	pal14l4cn.ic167
0x0000	1	pal14h4cn.ic230
0x0000	1	pal12l6cn.ic87
0x0000	1	pal14h4cn.ic229
0x0000	1	pal10l8cn.ic88
0x0000	1	pal14l4cn.ic151
0x0000	1	pal16l8cj.ic150

Memory Area:pals_soundbd

Address Range	Length	Label/Location	Description
0x0000	1	pal10l8cn.ic16

Memory Area:pals_vidbd

Address Range	Length	Label/Location	Description
0x0000	1	pal14h4cn.ic83
0x0000	1	pal10h8cn.ic82

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	bb10.41	CRC(f2368398) (Fluke: 45FA)
0x0100-0x01FF	256	bb11.40	CRC(bf77f624) (Fluke: EC22)
0x0200-0x02FF	256	bb12.39	CRC(10a2e8d1) (Fluke: 2D9C)
0x0300-0x03FF	256	bb13.42	CRC(40d10dfa) (Fluke: 5BA6)
0x0400-0x04FF	256	bb14.19	CRC(0b821e0b) (Fluke: D0B0)
0x0500-0x0CFF	2048	bb9.190	CRC(6fc807d1) (Fluke: 0D77)
0x0D00-0x14FF	2048	bb9.162	CRC(6fc807d1) (Fluke: 0D77)
0x1500-0x15FF	256	bb7.188	CRC(b57b609f) (Fluke: B114)
0x1600-0x16FF	256	bb8.31	CRC(2330ff4f) (Fluke: CAFD)

Memory Area:road

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	bug11s.225	CRC(771af4e1) (Fluke: E9D7)
0x4000-0x41FF	512	bb3s.195	CRC(2ab3d5ff) (Fluke: 2EAE)
0x4200-0x43FF	512	bb4s.193	CRC(630f68a4) (Fluke: D55C)
0x4400-0x45FF	512	bb5s.194	CRC(65925c9e) (Fluke: AB5E)
0x4600-0x47FF	512	bb6.224	CRC(ad43e02a) (Fluke: C82A)